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Dating faulted alluvial fans with cosmogenic10Be in the Gurvan Bogd mountain range (Gobi-Altay, Mongolia): climatic and tectonic implications.
- Source :
- Terra Nova; Jun2005, Vol. 17 Issue 3, p278-285, 8p
- Publication Year :
- 2005
-
Abstract
- The Gurvan Bogd mountain range is a fault system characterized by strong earthquakes (M ∼ 8) separated by long periods of quiescence. Further to the previous works in the area, our study provides new data concerning the tectonic and climatic processes in the Gobi-Altay. To quantify the slip rates along the faults, we dated offset alluvial fans analysing thein situproduced<superscript>10</superscript>Be along profiles at depth. The slip rates along the Bogd strike–slip fault and its associated thrust faults over the Upper Pleistocene–Holocene period are 0.95 ± 0.29 mm yr<superscript>−1</superscript> and comprised between 0.12 ± 0.02 and 0.13 ± 0.02 mm yr<superscript>−1</superscript>, respectively. The surfaces ages account for a cyclic formation of the fans over the past∼360 ka, in correlation with the terminations of the marine isotope stages 2, 6, 8 and 10.Terra Nova, 00, 1–8, 2005 [ABSTRACT FROM AUTHOR]
- Subjects :
- MOUNTAINS
GEOLOGIC faults
STRUCTURAL geology
ALLUVIAL fans
LANDFORMS
Subjects
Details
- Language :
- English
- ISSN :
- 09544879
- Volume :
- 17
- Issue :
- 3
- Database :
- Complementary Index
- Journal :
- Terra Nova
- Publication Type :
- Academic Journal
- Accession number :
- 17137202
- Full Text :
- https://doi.org/10.1111/j.1365-3121.2005.00612.x