Late Hercynian-Indosinian denudation and uplift history in the eastern Qaidam Basin : constraints from multiple thermometric indicators and sedimentary evidences
文献类型：期刊论文
| 作者 | Liu Kui3; Li ZongXing1,4; Shi XiaoBin; Wei XiaoJie1,4; Ren ZiQiang3; Yang XiaoQiu; Peng Bo1,4 |
| 刊名 | CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
 |
| 出版日期 | 2020 |
| 卷号 | 63期号:4页码:1403 |
| 关键词 | Permian-Triassic Late Hercynian-Indosinian Denudation Uplift Eastern Qaidam Basin |
| DOI | 10.6038/cjg2020M0566 |
| 英文摘要 | It is a puzzle that Permian-Triassic sediments, which are widely distributed in the surrounding mountain belts, are not yet found in the eastern Qaidam Basin. In order to figure out whether there was sedimentation and what s uplift history it was, we firstly applied the thermometric indicators method to recover Late Hercynian-Indosinian denudation. Some pieces of sedimentary evidence with relation to Indosinian uplift in the northern margin of eastern Qaidam Basin were also acquired by using provenance analysis. The results show that the top interface of residual Carboniferous of the eastern Qaidam Basin had been buried under 2500 m before Indosinian, and late Hercynian-Indosinian denudation reached up to 2100 similar to 4300 m, which was characterized by a decrease from south to north in the eastern Qaidam Basin. So there is an undeniable fact that the eastern Qaidam Basin once deposited Permian-Triassic with a thickness of 2000 similar to 3000 m, followed by a complete denudation. In response to northward subduction of the Paleo-Tethys Ocean, northern and southern margins of the eastern Qaidam Basin began to uplift since late Permian. An early Triassic rapid uplift in the northern margin of eastern Qaidam Basin led to significant denudation of previous sediments and crystalline basement, with adequate supplies of gravel provenance for lower Triassic Longwuhe formation in the southern Zongwulong. Then, seawater totally retreated from north and east of the study area in middle Triassic. Late Triassic continental collision between the Songpan-Garze terrene and East Kunlun-Qaidam terrene caused significant contraction and thickening of lower crust in the East Kunlun-Qaidam, as well as intense surface uplift in the eastern Qaidam Basin, thus resulting in a northward tilting paleogeomorphology. Under the promotion of paleo-climates and drainages, Permian-Triassic and partial Carboniferous were entirely eroded and transported to the Zongwulong, South Qilian and Songpan-Garze. |
| 源URL | [http://ir.scsio.ac.cn/handle/344004/18559]  |
| 专题 | 南海海洋研究所_中科院边缘海地质重点实验室 |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Minist Land & Resources, Key Lab Paleomagnetism & Tecton Reconstruct, Beijing 100081, Peoples R China 3.Chinese Acad Sci, South China Sea Inst Oceanol, Key Lab Ocean & Marginal Sea Geol, Guangzhou 510301, Peoples R China 4.Chinese Acad Geol Sci, Inst Geomech, Beijing 100081, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu Kui,Li ZongXing,Shi XiaoBin,et al. Late Hercynian-Indosinian denudation and uplift history in the eastern Qaidam Basin : constraints from multiple thermometric indicators and sedimentary evidences[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2020,63(4):1403, 1421. |
| APA | Liu Kui.,Li ZongXing.,Shi XiaoBin.,Wei XiaoJie.,Ren ZiQiang.,...&Peng Bo.(2020).Late Hercynian-Indosinian denudation and uplift history in the eastern Qaidam Basin : constraints from multiple thermometric indicators and sedimentary evidences.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,63(4),1403. |
| MLA | Liu Kui,et al."Late Hercynian-Indosinian denudation and uplift history in the eastern Qaidam Basin : constraints from multiple thermometric indicators and sedimentary evidences".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 63.4(2020):1403. |
入库方式： OAI收割
来源：南海海洋研究所
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