2,230 results
Search Results
2. Present-day kinematics of the northwest Moroccan Atlantic Margin from GNSS data: west southwest extrusion at the western end of the High Atlas.
- Author
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Lakhouidsi, Khalid, Fadil, Abdelali, Tahayt, Abdelilah, and Soulaimani, Abderrahmane
- Subjects
GLOBAL Positioning System ,SALT tectonics ,PETROLEUM prospecting ,NATURAL gas prospecting ,KINEMATICS - Abstract
The Global Navigation Satellite System (GNSS) has emerged as a practical and effective technique for studying slow and steady geodynamic movements, enabling continuous monitoring and precise quantification of deformation over different timescales. In Morocco, a network of GNSS stations has been established, offering valuable insights into tectonic processes. This paper focuses on investigating the geodynamic motion of the northwest Moroccan Atlantic Margin. By utilizing GNSS data, subsidence rates and horizontal velocity fields were determined for the first time, providing valuable information for oil and gas exploration activities. The study reveals an active uplift rate of 1 mm/year and a westward horizontal motion of 2.04 mm/year in the Essaouira segment. The paper presents a case study of the Essaouira–Agadir basin (EAB) onshore segment and investigates the anomalous displacement observed in this region compared to other coastal GNSS stations. Possible explanations for the observed movements include local processes such as salt tectonics and regional northwest–southeast compression related to Africa–Eurasia convergence. We suggest that the anomalous movement detected in this work is due to the regional northwest–southeast compression related to Africa–Eurasia convergence imparting an extrusion of the EAB to the west. This research contributes to a better understanding of the geodynamics in the northwest Moroccan Atlantic margin, thereby providing valuable insights for ongoing efforts in oil and gas exploration. Furthermore, it indicates the continued activity of the Agadir fault, which would exhibit a sinistral wrench movement, thus posing a threat to the city of Agadir and its inhabitants. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
3. Best Paper Award 2017.
- Author
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Polat, Ali
- Subjects
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SCIENCE publishing , *SCHOLARLY publishing , *GEOLOGY associations , *AWARDS - Abstract
The article announces that Tiffani A. Fraser and Matt P. Hutchison won the 2017 Best Paper Award from the Canadian Science Publishing and the Geological Association of Canada.
- Published
- 2018
- Full Text
- View/download PDF
4. Best Paper Award 2016.
- Author
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Polat, Ali
- Subjects
- *
EARTH sciences , *OROGENIC belts - Abstract
The article announces that the GAC–CSP Canadian Journal of Earth Sciences Best Paper Award for 2016 has been presented to Richard A. Glen and colleagues for their study related to different styles of non-collisional orogens and implications for crustal growth.
- Published
- 2017
- Full Text
- View/download PDF
5. Best Paper Award 2015.
- Author
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Polat, Ali
- Subjects
STRATIGRAPHIC geology ,EARTH sciences ,AWARDS - Abstract
The article announces the selection of "Chronostratigraphy of the Hottah Terrane and Great Bear Magmatic Zone of Wopmay Orogen, Canada and Exploration of a Terrane Translation Model" by Luke Ootes et al. as the winner of the 2015 "Canadian Journal of Earth Sciences" Best Paper Award.
- Published
- 2016
- Full Text
- View/download PDF
6. Best Paper Award 2013.
- Subjects
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GEOLOGICAL research - Abstract
The article announces that the research paper titled "Genesis of dispersal plumes in till" published in the "Canadian Journal of Earth Sciences" is the winner of the "Best Paper Award 2013" given by Canadian Science Publishing (CSP) and the Geological Association of Canada.
- Published
- 2014
- Full Text
- View/download PDF
7. Sedimentary characteristics, lithofacies, and paleogeography of the Middle–Lower Cambrian in the Tarim Basin, NW China.
- Author
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Ji, Tianyu, Yang, Wei, Wu, Xueqiong, Li, Dejiang, Liu, Mancang, Song, Chengpeng, and Chen, Xi
- Subjects
PALEOGEOGRAPHY ,LITHOFACIES ,CONTINENTAL shelf ,SEDIMENTARY facies (Geology) ,FACIES ,DOLOMITE ,SEDIMENTS - Abstract
The Cambrian pre-salt dolomite sequence in the Tarim Basin is a target zone of great strategic significance for hydrocarbon exploration in the basin. Using the results of the interpretation of 3D seismic data from Lunnan and 2D seismic data covering the whole basin, and based on a synthesis of outcrop data, drilling data, well logs, core data, and thin-section data, and the findings from previous studies, this paper studies the characteristics of the facies of the Middle–Lower Cambrian in the platform area in the Tarim Basin, the formation and evolution of platform margins, and the sedimentary characteristics, lithofacies, and paleogeographic characteristics of the Middle–Lower Cambrian series. Based on the types of lithofacies and the seismic facies analysis, the sedimentary facies of the Middle–Lower Cambrian strata can be classified into the five types. From bottom to top, the Middle–Lower Cambrian have experienced several development stages, including the deposition of continental shelf sediments of the Yuertusi Formation, gently sloping non-rimmed platform margin sediments of the Xiaoerbulake Formation, weakly rimmed platform margin sediments of the Wusongger and Shayilike formations, and strongly rimmed platform margin sediments of the Awatage Formation. In each stage, the platform margin shifted further east relative to its location in the previous stage. Based on these results and previous studies, the lithofacies and paleogeography maps of the Middle–Lower Cambrian in the Tarim Basin are modified, and the implications for hydrocarbon exploration in this area are discussed. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
8. Best Paper Award 2012.
- Subjects
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GEOLOGICAL research , *AWARDS - Abstract
The article announces that author M.E. McMechan has received the Best Paper Award for his research paper on geoscience.
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- 2013
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- View/download PDF
9. Impacts and mass extinctions: papers in honour of Glen Caldwell.
- Author
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Copper, Paul and Jin, Jisuo
- Subjects
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ENVIRONMENTAL sciences , *ECOLOGY , *GLOBAL environmental change , *PERIODICALS , *EARTH sciences - Abstract
Introduces a series of articles regarding the impact of the mass extinction of rare and exotic species on global environment and evolution, published in the 1999 issue "Canadian Journal of Earth Sciences."
- Published
- 2001
- Full Text
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10. An overview of Chinese Silurian acritarch research1.
- Author
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Yan, Kui, Li, Jun, Servais, Thomas, and Melchin, Mike
- Subjects
ACRITARCHS ,LLANDOVERY series ,BIOSTRATIGRAPHY ,PALEOBIOLOGY ,STRATIGRAPHIC geology - Abstract
Copyright of Canadian Journal of Earth Sciences is the property of Canadian Science Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2016
- Full Text
- View/download PDF
11. Best Paper Award 2011.
- Subjects
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ANNOUNCEMENTS , *LEAD isotopes , *AWARDS , *PERIODICAL publishing , *GEOLOGICAL time scales - Published
- 2012
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- View/download PDF
12. PbIso: an R package and web app for calculating and plotting Pb isotope data.
- Author
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Armistead, Sheree E., Eglington, Bruce M., and Pehrsson, Sally J.
- Subjects
WEB-based user interfaces ,ISOTOPES ,RADIOISOTOPES ,CANADIAN provinces - Abstract
The package PbIso is a free and open R toolbox for commonly used calculations and plots of Pb–Pb isotope data and for generating Pb evolution models. In this paper, we review Pb isotope systematics and the calculations that are commonly used, such as model age, model source μ (
238 U/204 Pb), time-integrated κ (232 Th/238 U), and initial Pb isotope ratios. These equations are implemented into R functions in the package PbIso. In addition, functions are provided for generating Pb evolution models, paleoisochrons, and isochrons. This allows users to apply calculations to their data in a straightforward way while providing transparency and flexibility of the calculations used. We have implemented some basic features of the PbIso package into an online shiny R application (see https://shereearmistead.github.io/software/pbiso), which makes it easy for users without any R experience to use these calculations with their own data and to generate plots. We have provided a case study from the Superior Province in Canada, showing how different Pb evolution models can be generated in PbIso and compared to Pb isotope data. [ABSTRACT FROM AUTHOR]- Published
- 2024
- Full Text
- View/download PDF
13. The Empress Group in Alberta, Canada.
- Author
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Hartman, Gregory M.D., Pawley, Steven M., Utting, Daniel J., Atkinson, Nigel, and Liggett, Jessica E.
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CANADIAN history ,BEDROCK ,MACHINE learning ,GRAVEL ,GLACIATION ,TILLAGE - Abstract
Basal gravel and sand mantling the bedrock floors of buried valleys throughout the Canadian Interior Plains, and conformably overlying proglacial lacustrine sediment, comprise the Empress Group. While previously conceptualized as stratigraphically equivalent deposits of preglacial rivers prior to the first and most extensive continental and montane glaciations, subsequent stratigraphic studies indicated that buried valley basal gravel must have been deposited between, or during, progressively more extensive continental glaciations and could not be stratigraphically equivalent throughout the buried valley network. However, in the general absence of formation-rank stratigraphic description of basal gravel units that might better inform the geologic history of the deposits, most workers simply consider Empress Group sediments time-transgressive. In this paper, we examine basal gravel at provincial and regional scales to understand its genesis and geologic history. At the provincial scale, we map basal gravel in three dimensions using a novel machine learning approach. At the regional scale, we formally define basal gravel formations at either end of the largest buried valley system in Alberta, which informs its glacial history and physiographic development and shows the importance of formation-rank stratigraphic description. Our results indicate that the buried valley network across Alberta is palimpsest in genesis and basal gravel units within it are chronostratigraphically intercalated between tills. We advocate that the Empress Group definition be extended across Alberta with modifications to improve its clarity and utility, and formally define the Old Fort, Unchaga, Ipiatik, and Winefred formations as part of the Empress Group. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
14. Canada's maritime frontier: the science legacy of Canada's extended continental shelf mapping for UNCLOS.
- Author
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Mosher, David C., Dickson, Mary-Lynn, Shimeld, John, Jackson, H. Ruth, Oakey, Gordon N., Boggild, Kai, Campbell, D. Calvin, Travaglini, Paola, Rainey, Walta-Anne, Murphy, Alain, Dehler, Sonya, and Ells, John
- Subjects
GEOMORPHOLOGY ,CONTINENTAL shelf ,UNITED Nations Convention on the Law of the Sea (1982) ,GEOSTROPHIC currents ,SUBMARINE fans ,CONTINENTAL slopes ,CONTINENTAL margins - Abstract
Canada ratified the United Nations Convention on the Law of the Sea (UNCLOS) in 2003. With that ratification is an obligation to submit data and information to the U.N. pertaining to the limits of the country's extended continental shelf (ECS); the portion of the juridical continental shelf that extends beyond 200 nautical miles. A team of Canadian scientists, managers, and legal experts that included representation from three Federal Departments (Natural Resources Canada, Fisheries and Oceans Canada, and Global Affairs Canada) with additional support from other departments, spent 13 years compiling and acquiring data to provide the scientific evidence to support delineation of Canada's seaward most maritime limit. The submission has the potential to provide Canada with 2.4 million km
2 of additional submarine landmass in the Atlantic and the Arctic oceans over which Canada exercises sovereign rights for the purpose of exploring and exploiting its natural resources. Specific information such as the tectonic framework of the continental margin, the geomorphology of the margin and in particular the continental slope, the geologic nature of adjoined ridges, rises, and plateaux, and sediment thickness within adjacent basins are examples of fundamental pieces of geoscientific information needed to substantiate Canada's outermost maritime limits. This paper highlights a number of segments of Canada's continental margins to showcase this scientific evidence and how it is applied in the UNCLOS context. In doing so, the paper demonstrates the geologic complexity of Canada's margins as illustrated in scientific publications that have resulted from these new data collections, while at the same time presenting new scientific evidence and interpretations. This collection of data and information provides a wealth of new knowledge in Canada's offshore regions. The massive data compilation in the Atlantic led to conception of continental margins, in a source-to-sink scenario, as having an equilibrium base level or graded form, comparable to river systems. Departures from this shape relate to the interplay of sedimentary processes and in particular to those processes that do not fit the source-to-sink paradigm. For example, a significant part of the Atlantic margin is shown to be heavily influenced by along-slope geostrophic currents that generated massive contourite drift deposits. These deposits reflect lateral transport of sediment that had a significant impact on the morphology of the margin. The role of mass transport processes in shaping continental margins is also highlighted, and in particular the collapses of entire segments of the margin were observed. The prominent role mass failure processes play in delivering sediment to the adjacent abyssal plain is also critical in the ECS context. These observations challenge the entrenched notion of a continental margin comprising a shelf, slope, and rise and in particular the concept of the "continental rise". Prior to 2006, regions of the Arctic Ocean seaward of the Canadian landmass had fewer than 5000 km of seismic reflection data. The massive efforts of Arctic coastal States to map their margins for ECS purposes have led to a leap in technological advances to acquire data in ice-covered seas and have led to a wealth of new geoscientific knowledge. Perhaps foremost amongst this knowledge is demonstration that Canada Basin is indeed a fully developed ocean basin, albeit significantly infilled with sediment. Based on this knowledge and identification of related structures, new realistic tectonic scenarios for opening of the Amerasia Basin are proposed that include a significant component of transform or strike-slip motions. With seismic velocity and rock sample information, the continental nature of Alpha and Mendeleev ridges has been substantiated. Even bathymetric data were lacking in the Arctic and new editions of seafloor maps now support grids of 500 m spacing; although some regions remain sparse. Once thought to be relatively stagnant, sedimentary processes such as found in many ocean basins were discovered in the Arctic Ocean. Evidence of geostrophic currents, sediment mass failures, and deep-sea turbidity current channels were found to be ubiquitous, even in the deepest parts of the Arctic's basins. [ABSTRACT FROM AUTHOR]- Published
- 2023
- Full Text
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15. Petrogenesis and geochemical evidence from early Jurassic intrusive rocks and their implications for subduction of the Paleo-Pacific Plate in the Yanbian area, Northeast China.
- Author
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Zhang, Xinwen, Sun, Jinggui, Xu, Zhikai, Liu, Yang, and Zhao, Chuntao
- Subjects
SUBDUCTION ,PETROGENESIS ,DIORITE ,GABBRO ,MAGMAS ,CONTINENTS - Abstract
Subduction of the Paleo-Pacific Plate plays a key role in the Early Jurassic magmatism evolution in the Yanbian area, Northeast China. In this paper, zircon U–Pb ages, whole-rock geochemical, and Sr–Nd–Hf isotopic compositions are presented. The Early Jurassic gabbros, diorite enclaves, granodiorites, and granites ages range from 183 to 189 Ma. They are characterized by enrichment in large-ion lithophile elements and depletion in high-field strength elements. The gabbros are classified as low- and medium-K tholeiitic, granodiorites and granites are high-K calc-alkaline I-type, and diorite enclaves are calc-alkaline transitional series. The gabbros have zircon εHf(t) values of 6.81–9.89, whole-rock
87 Sr/86 Sr(i) = 0.7043–0.7044, and εNd(t) from 2.72 to 2.80. The diorite enclaves have zircons with εHf(t) values of 8.26–12.80, whole-rock87 Sr/86 Sr(i) = 0.7051, and εNd(t) from 0.96 to 1.09. The granodiorites and granites have zircon εHf(t) values of 7.59–12.87, whole-rock87 Sr/86 Sr(i) = 0.7042–0.7066, and εNd(t) from 2.33 to 2.61. These data indicate that gabbroic magmas were derived from partial melting of a depleted mantle wedge metasomatized by subduction-related fluids. The basaltic magma underplated and heated the juvenile crust, whereas the granodiorites and granites might be the product of fractional crystallization of a mixture of basaltic and felsic magmas or derived from partial melting of the juvenile lower crust. Our data constrain the petrogenesis of these Early Jurassic intrusive rocks which are attributed to subduction of the Paleo-Pacific Plate beneath Eurasia continent in northeastern China. [ABSTRACT FROM AUTHOR]- Published
- 2023
- Full Text
- View/download PDF
16. Salt anomalies in potash beds of the Esterhazy Member, Devonian Prairie Evaporite Formation, Saskatchewan, Canada.
- Author
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Cisyk, David E.
- Subjects
POTASH ,PRAIRIES ,SALT ,BEDS ,GEOLOGY - Abstract
Copyright of Canadian Journal of Earth Sciences is the property of Canadian Science Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2020
- Full Text
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17. The theory of undercurrent from the Austrian alpine geologist Otto Ampferer (1875–1947): first conceptual ideas on the way to plate tectonics1.
- Author
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Dullo, Wolf-Christian and Pfaffl, Fritz A.
- Subjects
CRUST of the earth ,SURFACE of the earth ,GEOLOGICAL surveys ,GEOLOGISTS ,EARTH'S mantle - Abstract
Copyright of Canadian Journal of Earth Sciences is the property of Canadian Science Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2019
- Full Text
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18. Detrital zircon geochronology and provenance of the Mesoproterozoic Husky Creek Formation: a fluvial sandstone recording the waning stages of one of Earth's largest magmatic episodes.
- Author
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Meek, Robert D., Ielpi, Alessandro, Rainbird, Robert H., and Davis, William J.
- Subjects
GEOLOGICAL time scales ,PROVENANCE (Geology) ,ZIRCON ,FLUVIAL geomorphology ,FLOOD basalts ,IGNEOUS provinces ,SANDSTONE - Abstract
The Mesoproterozoic Husky Creek Formation is an interlayered redbed and basalt package that overlies a ca. 2.5 km thick, regionally extensive basaltic plateau linked to the 1.27 Ga Mackenzie Large Igneous Province. This succession provides an opportunity to study the interaction between contemporaneous fluvial sedimentation and flood basalt volcanism. The Husky Creek Formation is approximately 1900 m thick, consisting predominantly of fluvial channel and subordinate floodplain and eolian strata dominated by lithic detritus intercalated with basalt flows. U–Pb dating of detrital zircon grains collected from four stratigraphic levels in the Husky Creek Formation reveals two main age groupings: (1) a 1270 Ma peak attributed to the Mackenzie Large Igneous Province; and (2) Pre-1.6 Ga detrital zircon ages, which reflect sources from a broad region of northwestern Laurentia and are interpreted to be recycled from underlying sedimentary rocks of the Hornby Bay Basin. An upsection decrease in the proportion of ca. 1270 Ma zircon grains, coupled with increasing sandstone compositional maturity, reflects the expansion of the drainage basin during burial of a volcanic pile, with recycling becoming more dominant as the Husky Creek Formation accumulated. The Husky Creek Formation was deposited in the waning stages of the Mackenzie Igneous Event by west-flowing rivers into a geographically restricted basin above an extensive mafic volcanic plateau. This paper provides insight into fluvial basin development during the aftermath of one of Earth's largest igneous events. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
19. Late Paleoarchean to Neoarchean sedimentation on the Singhbhum Craton, eastern India: a synthesis.
- Author
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De, Shuvabrata, Mazumder, Rajat, Chaudhuri, Trisrota, and Bauer, Wilfried
- Subjects
NEOARCHAEAN ,SEDIMENTATION & deposition ,FACIES ,STRATIGRAPHIC correlation ,FLUVIAL geomorphology ,SEDIMENTARY basins - Abstract
Subaerial rise of Earth's first continents took place 3.3–3.2 Ga years ago. This had significant influence on the ocean, atmosphere, and biosphere. Two important sedimentological consequences of continental emersion were (1) development of terrestrial (alluvial fan–fluvial–aeolian) depositional systems and (2) formation of shallow-marine sedimentary basins near the continental margin. Late Paleoarchean–Neoarchean terrestrial deposits, including development of an extensive paleosol around 3.2 Ga, and Meso–Neoarchean shallow-marine deposits have been reported from the Singhbhum Craton, eastern India from several localities. However, lateral and vertical changes in sedimentary facies associations and stratigraphic correlation between these terrestrial to shallow-marine sedimentary deposits have not yet been investigated. In this paper, we have reviewed the sedimentological characteristics of Late Paleoarchean to Neoarchean (3.2–2.8 Ga) stratigraphic successions of the Singhbhum Craton and have discussed sea level change and mode of stratigraphic sequence building. Our analysis shows that Singhbhum granitoid complex was emplaced around 3.3 Ga in an intracontinental setting, resulting in high continental freeboard conditions that triggered terrestrial (alluvial fan–braided fluvial) sedimentation (Dhosrapahar Formation). Continental sedimentation continued until ca. 3.0 Ga. In the eastern (Simlipal Group), western (Birtola Formation), and southwestern (the Mankarchua, Mahagiri, and Keonjhar formations) parts, shallow-marine sedimentation occurred after 3.0 Ga as a result of transgression. However, in the northern part (Dhanjori Formation), continental sedimentation prevailed throughout the Archean. These Late Paleoarchean to Neoarchean terrestrial and near-coastal successions of Singhbhum Craton should be the prime targets for intense geobiological research. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
20. Structure from motion used to revive archived aerial photographs for geomorphological analysis: an example from Mount Meager volcano, British Columbia, Canada.
- Author
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Roberti, Gioachino, Ward, Brent C., van Wyk deVries, Benjamin, Perotti, Luigi, Giardino, Marco, Friele, Pierre A., Clague, John J., Menounos, Brian, Anderson, Leif S., and Freschi, Stefano
- Subjects
AERIAL photographs ,VOLCANOES ,DIGITAL photogrammetry ,EMERGENCY management ,ACCESS to archives ,ABLATION (Glaciology) ,GLACIERS - Abstract
Copyright of Canadian Journal of Earth Sciences is the property of Canadian Science Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2021
- Full Text
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21. Late Quaternary changes in sediment sources in the Labrador Sea.
- Author
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Andrews, John T. and Piper, David J.W.
- Subjects
BEDROCK ,MARINE sediments ,SEDIMENTS ,COMPOSITION of sediments ,CALCITE ,DOLOMITE ,CONTINENTAL shelf - Abstract
Quaternary sediment in the Labrador Sea was derived from many proglacial sources in Greenland and eastern Canada. Understanding the spatial and temporal changes in sediment provenance provides information on ice extent and sediment dispersal patterns. Variations in mineral composition of sediment from late Quaternary cores has been determined by a whole pattern of quantitative X-ray diffraction procedure. Mineral facies were extracted statistically by a supervised analysis of 90 samples from bedrock and ice-rafted clasts, which were then used to predict the most probable mineral facies in 1443 marine sediment samples. We used a non-parametric Classification Decision Tree (CDT) to validate that decision. Only 26% of the samples were misclassified in the CDT. The six facies identified consisted of four facies reflecting differences in the composition of Canadian and Greenland Precambrian igneous and metamorphic bedrock, a set of samples dominated by high weight percentages of calcite and dolomite (detrital carbonate (DC) and Hudson Strait Heinrich (HS-H) events), and a "shale" facies. We isolated 284 sediments from the HS-H DC facies and determined that they could be divided into four categories based on differences in their mineral proportions. These categories vary geographically, based on non-carbonate sediment supply during these events from Greenland, the Canadian Shield, the Appalachians, and the outer continental shelf. In the Holocene of the Labrador Sea, dolomite is derived from Baffin Bay and abundance of calcite is influenced by both biogenic productivity and dissolution. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
22. Reconstruction of isostatically adjusted paleo-strandlines along the southern margin of the Laurentide Ice Sheet in the Great Lakes, Lake Agassiz, and Champlain Sea basins.
- Author
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Lewis, C.F. Michael, Breckenridge, Andy J., and Teller, James T.
- Subjects
ICE sheets ,BODIES of water ,GLACIAL isostasy ,LAKES ,DIGITAL elevation models ,VALLEYS - Abstract
Copyright of Canadian Journal of Earth Sciences is the property of Canadian Science Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2022
- Full Text
- View/download PDF
23. Rapid coastal erosion of ice-bonded deposits on Pelly Island, southeastern Beaufort Sea, Inuvialuit Settlement Region, western Canadian Arctic.
- Author
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Malenfant, François, Whalen, D., Fraser, P., and van Proosdij, D.
- Subjects
SHORELINES ,INUVIALUIT ,EROSION ,ISLANDS ,STORMS ,COASTAL changes ,GEOLOGY ,MORAINES - Abstract
Copyright of Canadian Journal of Earth Sciences is the property of Canadian Science Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2022
- Full Text
- View/download PDF
24. Late Wisconsinan buildup and wastage of the Innuitian Ice Sheet across southern Ellesmere Island, Nunavut.
- Author
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England, John H., Atkinson, Nigel, Dyke, Arthur S., Eans, David J. A., and Zreda, Marek
- Subjects
ICE sheets ,ICE fields ,ABSOLUTE sea level change ,GEOLOGY ,GEOMORPHOLOGY - Abstract
Copyright of Canadian Journal of Earth Sciences is the property of Canadian Science Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2004
- Full Text
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25. Taphonomy and depositional history of the Southfork Quarry (Cypress Hills Formation, late Eocene) in southwestern Saskatchewan, Canada.
- Author
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Gilbert, Meagan M. and McDougall, Frank H.
- Subjects
TAPHONOMY ,EOCENE Epoch ,CANADIAN history ,CYPRESS ,QUARRIES & quarrying ,EOCENE-Oligocene boundary - Abstract
Copyright of Canadian Journal of Earth Sciences is the property of Canadian Science Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2022
- Full Text
- View/download PDF
26. Detrital geochronology of the Cunningham Lake formation: an overlap succession linking Cache Creek terrane to Stikinia at ∼205 Ma.
- Author
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Milidragovic, D., Ootes, L., Zagorevski, A., Cleven, N., Wall, C.J., Luo, Y., and Friedman, R.M.
- Subjects
GEOLOGICAL time scales ,ISLAND arcs ,PROVENANCE (Geology) ,LAKES ,VOLCANIC ash, tuff, etc. ,SEDIMENTATION & deposition ,SILICICLASTIC rocks - Abstract
Detrital zircon from three coarse-grained marine siliciclastic rocks was analyzed for U–Pb, Lu–Hf, and trace element compositions to constrain the timing of deposition and sediment provenance of the Cunningham Lake formation (formerly siliciclastic unit of the Sitlika assemblage) in north-central British Columbia. This strategy tests previously proposed sedimentary linkages between the Cache Creek terrane and the westerly rocks of the Stikine terrane. All three samples indicate maximum depositional ages at ca. 205–202 Ma (Rhaetian). The samples contain a predominant ca. 225–215 Ma detrital population, sourced from proximal contemporaneous volcanic arcs, and minor Permian to Middle Triassic and Carboniferous arc-derived detrital populations. The absence of Precambrian grains is consistent with the strongly suprachondritic zircon compositions (εHf(t) = +7 to +20), and indicates exclusively juvenile sources for the Cunningham Lake formation. Late Triassic sources of zircon are not known in the Cache Creek terrane and, except within western Stikine terrane, are uncommon among the Intermontane terranes that amalgamated with the Cache Creek terrane during Late Triassic–Early Jurassic. The Stikine suite (ca. 230–214 Ma) and coeval volcanic rocks in western Stikinia are the most probable sources of Late Triassic detritus for the Cunningham Lake formation. Stikinia's Paleozoic basement is the probable source of Carboniferous detrital zircon. Volcanic arc–backarc complexes in the Cache Creek terrane are the most likely sources of Permian to Middle Triassic detritus in the Intermontane terranes. Accordingly, the siliciclastic rocks of the Cunningham Lake formation represent an overlap sedimentary succession that links Stikinia to the Cache Creek terrane by the latest Triassic. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
27. Regional geology and tectonic framework of the Southern Indian domain, Trans-Hudson orogen, Manitoba.
- Author
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Martins, T., Rayner, N., Corrigan, D., and Kremer, P.
- Subjects
GEOLOGY ,CLASTIC rocks ,GREENSTONE belts ,VOLCANIC ash, tuff, etc. ,GEOLOGICAL mapping ,SEDIMENTARY rocks - Abstract
Copyright of Canadian Journal of Earth Sciences is the property of Canadian Science Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2022
- Full Text
- View/download PDF
28. Multi-criteria assessment approach of slow-moving urban landslide hazard: the case of Moulay Yacoub, Morocco.
- Author
-
Obda, Ilias, El Kharim, Younes, Bounab, Ali, Lahrach, Abderrahim, Ahniche, Mohammed, and Mansouri, Hamou
- Subjects
MARL ,URBAN growth ,SWELLING soils ,SOIL creep ,BEDROCK ,LANDSLIDES - Abstract
Copyright of Canadian Journal of Earth Sciences is the property of Canadian Science Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2022
- Full Text
- View/download PDF
29. Baffin Bay/Nares Strait surface (seafloor) sediment mineralogy: further investigations and methods to elucidate spatial variations in provenance.
- Author
-
Andrews, John T.
- Subjects
MINERALOGY ,SPATIAL variation ,COMPOSITION of sediments ,SUBMARINE topography ,DECISION making - Abstract
Copyright of Canadian Journal of Earth Sciences is the property of Canadian Science Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2019
- Full Text
- View/download PDF
30. Significance of the metasomatized lithospheric mantle in the formation of early basalts and Cu – platinum group element sulfide mineralization in the Coldwell Complex, Midcontinent Rift, Canada1.
- Author
-
Good, David J. and Lightfoot, Peter C.
- Subjects
PLATINUM group ,RARE earth metals ,PRECIOUS metals ,TRACE elements ,THOLEIITE ,LIGHT elements ,BASALT - Abstract
Copyright of Canadian Journal of Earth Sciences is the property of Canadian Science Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2019
- Full Text
- View/download PDF
31. Deep mineral exploration using multi-scale electromagnetic geophysics: the Lalor massive sulphide deposit case study1.
- Author
-
Yang, Dikun, Fournier, Dominique, Kang, Seogi, and Oldenburg, Douglas W.
- Subjects
PROSPECTING ,GEOPHYSICS ,ELECTROMAGNETISM ,LAKE sediments ,SULFIDES - Abstract
Copyright of Canadian Journal of Earth Sciences is the property of Canadian Science Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2019
- Full Text
- View/download PDF
32. Discussion of "Generation of heavy-mineral glacial indicator dispersal trains from a diabase sill, Nipigon region, northwestern Ontario".
- Author
-
Barnett, Peter J.
- Subjects
EDITORIALS ,GLACIAL erosion ,HEAVY minerals ,DIABASE ,EROSION ,GLACIERS - Abstract
The article presents author's views on the research paper titled "Generation of heavy-mineral glacial indicator dispersal trains from a diabase sill, Nipigon region, northwestern Ontario," by Phillip Larson and Howard Mooers, that was previously published in the journal. He comments that the authors did not consider information that could significantly alter several of the assumptions and conclusions made by them in the paper.
- Published
- 2006
- Full Text
- View/download PDF
33. Chemostratigraphy as a tool for sequence stratigraphy in the Devonian Hare Indian Formation in the Mackenzie Mountains and Central Mackenzie Valley, Northwest Territories, Canada.
- Author
-
Harris, Brette S., LaGrange, Maya T., Biddle, Sara K., Playter, Tiffany L., Fiess, Kathryn M., and Gingras, Murray K.
- Subjects
SEQUENCE stratigraphy ,CHEMOSTRATIGRAPHY ,X-ray fluorescence ,HARES ,SEA level ,SEDIMENTOLOGY - Abstract
Copyright of Canadian Journal of Earth Sciences is the property of Canadian Science Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2022
- Full Text
- View/download PDF
34. Postglacial emergence of Amund and Ellef Ringnes islands, Nunavut: implications for the northwest sector of the Innuitian Ice Sheet.
- Author
-
Atkinson, Nigel and England, John
- Subjects
HOLOCENE stratigraphic geology ,ICE sheets ,GLACIAL landforms ,HOLOCENE paleoceanography ,ABSOLUTE sea level change - Abstract
Copyright of Canadian Journal of Earth Sciences is the property of Canadian Science Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2004
- Full Text
- View/download PDF
35. Refining 2 km of Ordovician chronostratigraphy beneath Anticosti Island utilizing integrated chemostratigraphy1.
- Author
-
McLaughlin, Patrick I., Emsbo, Poul, Desrochers, André, Bancroft, Alyssa, Brett, Carlton E., Riva, John F., Premo, Wayne, Neymark, Leonid, Achab, Aicha, Asselin, Esther, Emmons, M. Matthew, and Melchin, Mike
- Subjects
ORDOVICIAN paleobotany ,ORDOVICIAN Period ,ORDOVICIAN paleontology ,X-ray fluorescence ,BOTRYCHIUM minganense - Abstract
Copyright of Canadian Journal of Earth Sciences is the property of Canadian Science Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2016
- Full Text
- View/download PDF
36. Eocene paleontology and geology of western North America1.
- Author
-
Greenwood, David R., Pigg, Kathleen B., DeVore, Melanie L., and Polat, Ali
- Subjects
EOCENE paleontology ,GEOLOGY ,TEMPERATE forests ,EOCENE Epoch ,CLIMATOLOGY observations - Abstract
Copyright of Canadian Journal of Earth Sciences is the property of Canadian Science Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2016
- Full Text
- View/download PDF
37. Crustal eduction and slab-failure magmatism in an Orosirian (2.05–1.80 Ga) postcollisional cratonic foredeep: geochronology of Seton volcanics and Compton laccoliths, Tu Cho (Great Slave Lake), NWT, Canada.
- Author
-
Hoffman, Paul F., Macdonald, Francis A., Bowring, Samuel A., Ramezani, Jahandar, Buchwaldt, Robert, Hildebrand, Robert S., and Whalen, Joseph B.
- Subjects
VOLCANOLOGY ,GEOLOGICAL time scales ,THRUST belts (Geology) ,MAGMATISM ,OROGENIC belts ,VOLCANISM ,LAKES - Abstract
Three Orosirian basins and associated foreland thrust-fold belts are preserved on the margins of the Slave craton. All three are related to orogenic belts where oceans opened and later closed, uniting new crustal partners. The Great Slave basin differs from the Kilhigok and Coronation basins in ways that have defied explanation. It lacks a passive margin sequence and hosts two discrete igneous suites, separated by large-scale thrusting, that occurred well after the adjacent paleocean had closed. Here we report U–Pb zircon geochronology by chemical abrasion isotope dilution thermal ionization mass spectrometry for a member of each suite to constrain the age and origin of postcollisional thrusting. A widespread pulse of mainly phreatic alkaline volcanism, coeval with renewed foredeep flexure, occurred at 1889.0 ± 0.7 Ma (2σ internal error). A quartz-monzodiorite body, one of a belt-parallel chain of laccoliths that postdate thrusting, was emplaced at 1866.9 ± 0.9 Ma. These ages bracket renewed foredeep sedimentation and thrusting that telescoped major facies zones and was rooted within the basin. The older age is 70 and 30−60 Myr younger than collision in the Thelon and Taltson orogens, respectively. We attribute postcollisional thrusting and foredeep subsidence to "eduction"—the upward and outward ejection of partly subducted crust—and postulate that the top of the ejected wedge was a normal-sense detachment fault projecting beneath the Nonacho basin. We infer that eduction was triggered by slab failure, producing alkaline volcanism, and ended with delamination and laccolith emplacement. Eduction was facilitated by tradewind-driven erosion. Delamination was enabled by crustal transfer to the educted wedge, reducing footwall buoyancy. Slab failure and/or delamination removed the passive margin. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
38. Two braincases of Daspletosaurus (Theropoda: Tyrannosauridae): anatomy and comparison1.
- Author
-
Paulina Carabajal, Ariana, Currie, Philip J., Dudgeon, Thomas W., Larsson, Hans C.E., and Miyashita, Tetsuto
- Subjects
SAURISCHIA ,BODY size ,ANATOMY ,MESENCEPHALON ,STRUCTURAL geology ,MANDIBULAR condyle ,PTERYGOID muscles - Abstract
Copyright of Canadian Journal of Earth Sciences is the property of Canadian Science Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2021
- Full Text
- View/download PDF
39. Revisiting Russell's troodontid: autecology, physiology, and speculative tool use1.
- Author
-
Varricchio, D.J., Hogan, J.D., and Freimuth, W.J.
- Subjects
CRETACEOUS-Paleogene boundary ,BODY temperature ,PHYSIOLOGY ,ANIMAL clutches ,ADULTS - Abstract
Copyright of Canadian Journal of Earth Sciences is the property of Canadian Science Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2021
- Full Text
- View/download PDF
40. Preface.
- Subjects
PREFACES & forewords ,AWARDS - Abstract
A preface to the volume 46 of the "Canadian Journal of Earth Sciences" is presented.
- Published
- 2009
- Full Text
- View/download PDF
41. Recent sedimentation in three adjacent fjord-lakes on the Québec North Shore (eastern Canada): facies analysis, laminae preservation, and potential for varve formation.
- Author
-
Nzekwe, Obinna P., Francus, Pierre, St-Onge, Guillaume, Lajeunesse, Patrick, Fortin, David, Gagnon-Poiré, Antoine, Philippe, Édouard G.H., and Normandeau, Alexandre
- Subjects
LAKE sediments ,SEDIMENTATION & deposition ,FACIES ,FJORDS ,VARVES ,LAKE hydrology - Abstract
Copyright of Canadian Journal of Earth Sciences is the property of Canadian Science Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2018
- Full Text
- View/download PDF
42. Geological correlation between northern Cyprus and southern Anatolia.
- Author
-
Yılmaz, Yücel
- Subjects
LITHOSPHERE ,CENOZOIC Era ,EOCENE Epoch ,MIOCENE Epoch ,SUTURE zones (Structural geology) ,FLYSCH ,THRUST - Abstract
Copyright of Canadian Journal of Earth Sciences is the property of Canadian Science Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2021
- Full Text
- View/download PDF
43. Trapped in a graben: deposition of Huronian gold-bearing conglomerates in a fault-influenced, valley-confined, fluvial system in the southern Cobalt Basin, Ontario, Canada.
- Author
-
Long, D.G.F. and Rainbird, Robert H.
- Subjects
CLASTIC rocks ,COBALT ,STREAMFLOW ,EROSION ,ARCHAEAN ,GOLD ores ,FLUVIAL geomorphology - Abstract
Isopachs of Huronian strata of the Elliot and Hough Lake groups in the southern part of the Cobalt Basin can be used to define the geometry of a 4 km wide valley system that directly influenced the location of gravel-bed rivers bearing detrital gold and auriferous pyrite in the Mississagi Formation. Distribution and thickness of these and underlying formations can be directly linked to initial valley formation parallel to existing north-south-oriented faults in the Archean basement. Thickness distributions were directly influenced by active subsidence associated with transverse, east-south-east (ESE)-oriented, normal faults, related to extension along the Huronian transform-rift margin further south. Strata underlying the Mississagi Formation were largely removed by erosion in the northern part of the paleovalley system, but thickened and then thinned south of the ESE faults. Pyrite and detrital gold in the Mississagi Formation may have been concentrated from reworking of coarse clastic rocks of the Matinenda and Ramsay Lake formations, along with significant contributions from erosion of proximal Archean basement within 3–5 km of the preserved basin margins. There is strong evidence to suggest that stream flow was initially concentrated in three main structurally influenced valley systems in the north, with one lateral tributary in the south-eastern part of the basin. The fluvial systems merged, and thickened, south of the Tee Lake fault, possibly reflecting trans-tensional influences on the basin margin faults. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
44. Revisiting Huronian paleoslopes.
- Author
-
Long, Darrel G.F.
- Subjects
WATERSHEDS ,COMPACTING ,FLUVIAL geomorphology ,PRECAMBRIAN - Abstract
It is commonly assumed that the gradients of pre-vegetation fluvial systems were greater than those of modern rivers. If the measured thickness of crossbeds is first corrected for post-depositional compaction, using thin-section-based observations, the corrected thickness data can be applied to a new suite of formulae, based on observations of >4000 modern rivers, to provide more realistic paleohydrological reconstructions of ancient river systems. Using this approach, after correction for 36% compaction, the average slope of the rivers that deposited the Mississagi Formation was calculated as 0.0013 m/m (0.0005–0.0026), with an average bankfull channel depth of 2.67 m. The slope of Serpent Formation rivers, after correction for 33.5% compaction, averaged 0.0007 m/m (0.0003–0.0016), with an average bankfull channel depth of 5.85 m. The calculation of slopes using this approach on these Paleoproterozoic and other Precambrian systems indicates that primary river gradients were similar to modern rivers, falling well below the "depositional gap", of 0.007–0.026 m/m, between modern rivers and arid-region fans, negating the long-held idea that pre-vegetation rivers had higher slopes than their modern counterparts. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
45. New geoscientific constraints on the hydrocarbon potential of the Nechako-Chilcotin plateau of central British Columbia1.
- Author
-
Calvert, Andrew J. and Andrews, Graham D.M.
- Subjects
GEOLOGY ,HYDROCARBONS ,IMAGING systems in geophysics ,MOUNTAIN pine beetle ,ECONOMIC activity - Abstract
Copyright of Canadian Journal of Earth Sciences is the property of Canadian Science Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2014
- Full Text
- View/download PDF
46. John Tuzo Wilson: a Canadian who revolutionized Earth Sciences1.
- Author
-
Polat, Ali
- Subjects
SCIENTISTS ,EARTH sciences ,PLATE tectonics ,CONTINENTAL drift - Abstract
Copyright of Canadian Journal of Earth Sciences is the property of Canadian Science Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2014
- Full Text
- View/download PDF
47. Potential-field modelling of the prospective Chibougamau area (northeastern Abitibi subprovince, Quebec, Canada) using geological, geophysical, and petrophysical constraints.
- Author
-
Maleki, Amir, Smith, Richard, Eshaghi, Esmaeil, Mathieu, Lucie, Snyder, David, and Naghizadeh, Mostafa
- Subjects
STRUCTURAL geology ,IGNEOUS intrusions ,GREENSTONE belts ,GEOLOGY ,GEOMETRIC modeling - Abstract
Copyright of Canadian Journal of Earth Sciences is the property of Canadian Science Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2021
- Full Text
- View/download PDF
48. Filling process and filling characteristic analysis of Paleogene Baxian sag in Bohai Bay basin, China.
- Author
-
Zhang, Zili, Zhu, Xiaomin, Zhang, Ruifeng, Fu, Sheng, and Zhang, Jing
- Subjects
PALEOGENE ,WATERSHEDS ,SEDIMENTARY facies (Geology) ,GAS reservoirs ,RIFTS (Geology) ,PETROLEUM reservoirs ,GEOMORPHOLOGY ,COMPLEX variables - Abstract
Copyright of Canadian Journal of Earth Sciences is the property of Canadian Science Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2021
- Full Text
- View/download PDF
49. Geochronology, geochemistry, and Hf isotopic compositions of early Permian syenogranite and diabase from the northern Great Xing'an Range, northeastern China: petrogenesis and tectonic implications.
- Author
-
Sun, Yong-gang, Li, Bi-le, Sun, Feng-yue, Ding, Qing-feng, Qian, Ye, Li, Liang, Xu, Qing-lin, and Li, Yu-jin
- Subjects
DIABASE ,GEOLOGICAL time scales ,GEOCHEMISTRY ,PETROGENESIS ,URANIUM-lead dating ,DIKES (Geology) - Abstract
Copyright of Canadian Journal of Earth Sciences is the property of Canadian Science Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2020
- Full Text
- View/download PDF
50. Long-term nivation rates, Cathedral Massif, northwestern British Columbia.
- Author
-
Nyland, Kelsey E. and Nelson, Frederick E.
- Subjects
LAST Glacial Maximum ,GEOMORPHOLOGY ,CATHEDRALS ,DRONE aircraft ,SOLAR radiation ,LANDFORMS - Abstract
Copyright of Canadian Journal of Earth Sciences is the property of Canadian Science Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2020
- Full Text
- View/download PDF
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