Dating faulted alluvial fans with cosmogenic 10Be in the Gurvan Bogd mountain range (Gobi-Altay, Mongolia): climatic and tectonic implications - BRGM - Bureau de recherches géologiques et minières Access content directly
Journal Articles Terra Nova Year : 2005

Dating faulted alluvial fans with cosmogenic 10Be in the Gurvan Bogd mountain range (Gobi-Altay, Mongolia): climatic and tectonic implications

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 the in situ produced 10Be 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−1 and comprised between 0.12 ± 0.02 and 0.13 ± 0.02 mm yr−1, 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.

Domains

Earth Sciences

Dates and versions

hal-03763382 , version 1 (29-08-2022)

Identifiers

Cite

Riccardo Vassallo, Jean-Francois Ritz, Regis Braucher, Sebastien Carretier. Dating faulted alluvial fans with cosmogenic 10Be in the Gurvan Bogd mountain range (Gobi-Altay, Mongolia): climatic and tectonic implications. Terra Nova, 2005, 17 (3), pp.278-285. ⟨10.1111/j.1365-3121.2005.00612.x⟩. ⟨hal-03763382⟩
17 View
0 Download

Altmetric

Share

Gmail Facebook Twitter LinkedIn More