36 results on '"Johnston, David T."'
Search Results
2. The influence of submarine hydrothermal systems on seawater sulfate
3. Theoretical estimates of sulfoxyanion triple-oxygen equilibrium isotope effects and their implications
4. Impacts of bioturbation on iron biogeochemistry and microbial communities in coastal sediment mesocosms under varying degrees of hypoxia
5. Oxygen isotope insights into the Archean ocean and atmosphere
6. The influence of reactive oxygen species on “respiration” isotope effects
7. Calibrating the triple oxygen isotope composition of evaporite minerals as a proxy for marine sulfate
8. Simultaneous combustion preparation for mercury isotope analysis and detection of total mercury using a direct mercury analyzer
9. Thallium isotope ratios in shales from South China and northwestern Canada suggest widespread O2 accumulation in marine bottom waters was an uncommon occurrence during the Ediacaran Period
10. Learning to promote recovery after spinal cord injury
11. The triple oxygen isotope composition of Precambrian chert
12. Barium-isotopic constraints on the origin of post-Marinoan barites
13. Geobiology of the late Paleoproterozoic Duck Creek Formation, Western Australia
14. Unraveling multiple phases of sulfur cycling during the alteration of ancient ultramafic oceanic lithosphere
15. Tracking the onset of Phanerozoic-style redox-sensitive trace metal enrichments: New results from basal Ediacaran post-glacial strata in NW Canada
16. Oxygen and sulfur isotopes in sulfate in modern euxinic systems with implications for evaluating the extent of euxinia in ancient oceans
17. High-precision measurement and standard calibration of triple oxygen isotopic compositions (δ18O, Δ17O) of sulfate by F2 laser fluorination
18. Triple oxygen and multiple sulfur isotope constraints on the evolution of the post-Marinoan sulfur cycle
19. Development of in situ sulfur four-isotope analysis with multiple Faraday cup detectors by SIMS and application to pyrite grains in a Paleoproterozoic glaciogenic sandstone
20. Multiple sulfur isotope constraints on the modern sulfur cycle
21. Canopy Flow Analysis Reveals the Advantage of Size in the Oldest Communities of Multicellular Eukaryotes
22. Determination and application of the equilibrium oxygen isotope effect between water and sulfite
23. The stratigraphic relationship between the Shuram carbon isotope excursion, the oxygenation of Neoproterozoic oceans, and the first appearance of the Ediacara biota and bilaterian trace fossils in northwestern Canada
24. A basin redox transect at the dawn of animal life
25. Sedimentary talc in Neoproterozoic carbonate successions
26. Multiple sulfur isotopes and the evolution of Earth's surface sulfur cycle
27. Geobiology of the late Paleoproterozoic Duck Creek Formation, Western Australia
28. Clay mineralogy, organic carbon burial, and redox evolution in Proterozoic oceans
29. An emerging picture of Neoproterozoic ocean chemistry: Insights from the Chuar Group, Grand Canyon, USA
30. Fractionation of multiple sulfur isotopes during phototrophic oxidation of sulfide and elemental sulfur by a green sulfur bacterium
31. Sulfur isotope biogeochemistry of the Proterozoic McArthur Basin
32. Organic haze, glaciations and multiple sulfur isotopes in the Mid-Archean Era
33. Implications of conservation of mass effects on mass-dependent isotope fractionations: Influence of network structure on sulfur isotope phase space of dissimilatory sulfate reduction
34. Sulfur isotope insights into microbial sulfate reduction: When microbes meet models
35. Evolution of the oceanic sulfur cycle at the end of the Paleoproterozoic
36. Searching for an oxygenation event in the fossiliferous Ediacaran of northwestern Canada
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