OSL Dating of Fault Activity in the West of Ulaanbaatar
详细信息
- 责任者：Sun Gaoyuan (Institute of Geology and Geophysics ; Chinese Academy of Sciences ; Beijing 100029 ; China) ; Gong Zhijun
- 刊名：Seismology and Geology
- 出版年：2013
- 卷期：35(2)
- 关键词：活动断层 ; active faults ; 光释光测年 ; optical stimulated luminescence dating ; 蒙古 ; Mongolia
- 页码：p.322-327
- 图表：illus., 2 tables, 13 refs.
- 分类号：0300
- issnNo：ISSN0253-4967
- isbnNo：CN11-2192/P
摘要
Several faults are developed around Ulaanbaatar city. In this study,optically stimulated luminescence( OSL) dating is applied to the Emeelt and Hustai Faults in the west of Ulaanbaatar,in order to evaluate the hazards around Ulaanbaatar. Totally,two profiles are studied: the profile ET for the Emeelt Fault and the profile KI for the Hustai Fault. The fault-related sediments in the two profiles are dated by OSL dating to infer the date of the past fault activities. The OSL dating results for samples from profile ET suggest that the age of the last fault movement is between 9. 6 ± 1. 0ka and 11. 3 ± 1. 3ka. The deformed strata and the Heilu soil in the fault scarp on the Hustai Fault suggest a maximum age of 24. 2 ± 4. 9ka and a minimum age of 0. 87 ± 0. 08ka for the faulting.
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