| Title | Provenance of Oligocene-Miocene sediments in the Subei area, eastern Altyn Tagh fault and its geological implications: Evidence from detrital zircons LA-ICP-MS U-Pb chronology |
| Authors | Li, Jianfeng Zhang, Zhicheng Tang, Wenhao Li, Ke Luo, Zhiwen Li, Jie |
| Affiliation | Peking Univ, MOE Key Lab Orogen Belts & Crustal Evolut, Beijing 100871, Peoples R China. Peking Univ, Sch Earth & Space Sci, Beijing 100871, Peoples R China. Tuha Oilfield Co, Petro China, Res Inst Explorat & Dev, Hami 839009, Xinjiang, Peoples R China. Peking Univ, Sch Earth & Space Sci, Dept Geol, Room 3307,Yifu 2 Bldg,5 Yiheyuan Rd, Beijing 100871, Peoples R China. |
| Keywords | Altyn Tagh fault (ATF) Subei basin Xiaobiegai basin Detrital zircon LA-ICP-MS dating Paleocurrent Clastic composition NORTHERN TIBETAN PLATEAU PLASMA-MASS SPECTROMETRY NORTHWEST CHINA WESTERN GANSU GEOCHRONOLOGY MAGNETOSTRATIGRAPHY DISPLACEMENT HISTORY GEOCHEMISTRY MAGNITUDE |
| Issue Date | 2014 |
| Publisher | journal of asian earth sciences |
| Citation | JOURNAL OF ASIAN EARTH SCIENCES.2014,87,130-140. |
| Abstract | Oligocene-Miocene strata in the Subei and Xiaobiegai basins of the Subei area, located in the eastern Altyn Tagh fault (ATF), northern Tibetan Plateau, record important characteristics of the ATF evolution. Detrital zircons laser ablation-inductively coupled plasma-mass spectrometry (LA-1CP-MS) U-Pb ages from two samples, together with paleocurrent directions and clastic composition in the Xishuigou section demonstrate that sediments in the Subei basin originated from the Danghenanshan range along its southern margin. Detrital zircons U-Pb ages from three samples in the Xiaobiegai basin, together with paleocurrent directions and clastic composition, indicate that sediments in the Xiaobiegai basin may partly originate from terranes along the northeastern margin of the basin in addition to the Danghenanshan range. Our results, combined with regional evolution, suggest that the Xiaobiegai and the Subei basins was a combined basin in Oligocene-early Miocene. This basin was folded, tilted, and dislocated at ca. 8 Ma by rapid uplift of the northern Tibetan plateau and rapid strike-slip of the ATF. As a result, the Subei basin became a thrust-fold belt of the Danghenanshan range front, and the Xiaobiegai basin grew into an intermontane basin in the northeastern part of the Danghenanshan range. Thus, the Subei area gradually acquired its present morphotectonic patterns. (C) 2014 Elsevier Ltd. All rights reserved. |
| URI | http://hdl.handle.net/20.500.11897/155467 |
| ISSN | 1367-9120 |
| DOI | 10.1016/j.jseaes.2014.02.015 |
| Indexed | SCI(E) |
| Appears in Collections: | 造山带与地壳演化教育部重点实验室 地球与空间科学学院 |
