Title: Late Cenozoic deformation and uplift of the NE Tibetan Plateau: Evidence from high-resolution magnetostratigraphy of the Guide Basin, Qinghai Province, China
Abstract: Research Article| September 01, 2005 Late Cenozoic deformation and uplift of the NE Tibetan Plateau: Evidence from high-resolution magnetostratigraphy of the Guide Basin, Qinghai Province, China Xiaomin Fang; Xiaomin Fang 1Institute of Tibetan Plateau Research, Chinese Academy of Science, P.O. Box 2871, Beilin North Str., Beijing 100085, China, and National Laboratory of Western China's Environmental Systems, Ministry of Education of China and College of Resources and Environment, Lanzhou University, Gansu 730000, China Search for other works by this author on: GSW Google Scholar Maodu Yan; Maodu Yan 2Department of Geological Sciences, University of Michigan, Ann Arbor, Michigan 48109-1063, USA Search for other works by this author on: GSW Google Scholar Rob Van der Voo; Rob Van der Voo 2Department of Geological Sciences, University of Michigan, Ann Arbor, Michigan 48109-1063, USA Search for other works by this author on: GSW Google Scholar David K. Rea; David K. Rea 2Department of Geological Sciences, University of Michigan, Ann Arbor, Michigan 48109-1063, USA Search for other works by this author on: GSW Google Scholar Chunhui Song; Chunhui Song 3National Laboratory of Western China's Environmental Systems, Ministry of Education of China and College of Resources and Environment, Lanzhou University, Gansu 730000, China Search for other works by this author on: GSW Google Scholar Josep M. Parés; Josep M. Parés 4Department of Geological Sciences, University of Michigan, Ann Arbor, Michigan 48109-1063, USA Search for other works by this author on: GSW Google Scholar Junping Gao; Junping Gao 5National Laboratory of Western China's Environmental Systems, Ministry of Education of China and College of Resources and Environment, Lanzhou University, Gansu 730000, China Search for other works by this author on: GSW Google Scholar Junsheng Nie; Junsheng Nie 5National Laboratory of Western China's Environmental Systems, Ministry of Education of China and College of Resources and Environment, Lanzhou University, Gansu 730000, China Search for other works by this author on: GSW Google Scholar Shuang Dai Shuang Dai 5National Laboratory of Western China's Environmental Systems, Ministry of Education of China and College of Resources and Environment, Lanzhou University, Gansu 730000, China Search for other works by this author on: GSW Google Scholar Author and Article Information Xiaomin Fang 1Institute of Tibetan Plateau Research, Chinese Academy of Science, P.O. Box 2871, Beilin North Str., Beijing 100085, China, and National Laboratory of Western China's Environmental Systems, Ministry of Education of China and College of Resources and Environment, Lanzhou University, Gansu 730000, China Maodu Yan 2Department of Geological Sciences, University of Michigan, Ann Arbor, Michigan 48109-1063, USA Rob Van der Voo 2Department of Geological Sciences, University of Michigan, Ann Arbor, Michigan 48109-1063, USA David K. Rea 2Department of Geological Sciences, University of Michigan, Ann Arbor, Michigan 48109-1063, USA Chunhui Song 3National Laboratory of Western China's Environmental Systems, Ministry of Education of China and College of Resources and Environment, Lanzhou University, Gansu 730000, China Josep M. Parés 4Department of Geological Sciences, University of Michigan, Ann Arbor, Michigan 48109-1063, USA Junping Gao 5National Laboratory of Western China's Environmental Systems, Ministry of Education of China and College of Resources and Environment, Lanzhou University, Gansu 730000, China Junsheng Nie 5National Laboratory of Western China's Environmental Systems, Ministry of Education of China and College of Resources and Environment, Lanzhou University, Gansu 730000, China Shuang Dai 5National Laboratory of Western China's Environmental Systems, Ministry of Education of China and College of Resources and Environment, Lanzhou University, Gansu 730000, China Publisher: Geological Society of America Received: 22 Sep 2004 Revision Received: 15 Feb 2005 Accepted: 16 Feb 2005 First Online: 02 Mar 2017 Online ISSN: 1943-2674 Print ISSN: 0016-7606 Geological Society of America GSA Bulletin (2005) 117 (9-10): 1208–1225. https://doi.org/10.1130/B25727.1 Article history Received: 22 Sep 2004 Revision Received: 15 Feb 2005 Accepted: 16 Feb 2005 First Online: 02 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation Xiaomin Fang, Maodu Yan, Rob Van der Voo, David K. Rea, Chunhui Song, Josep M. Parés, Junping Gao, Junsheng Nie, Shuang Dai; Late Cenozoic deformation and uplift of the NE Tibetan Plateau: Evidence from high-resolution magnetostratigraphy of the Guide Basin, Qinghai Province, China. GSA Bulletin 2005;; 117 (9-10): 1208–1225. doi: https://doi.org/10.1130/B25727.1 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGSA Bulletin Search Advanced Search Abstract The Cenozoic intramontane Gonghe–Guide Basin in Qinghai Province, China, is tectonically controlled by the sinistral strike-slip framework of the Kunlun and Altyn Tagh–South Qilian faults in the northeastern Tibetan Plateau. The basin is filled with thick Cenozoic clastic sedimentary formations, which provide important evidence of the deformation of this part of the plateau, although they have long lacked good age constraints. Detailed magnetostratigraphic and paleontologic investigations of five sections in the Guide Basin and their lithologic and sedimentary characteristics allow us to divide a formerly undifferentiated unit (the Guide Group) into six formations (where ages are now magnetostratigraphically well established, they are given in parentheses): the Amigang (1.8–2.6 Ma), Ganjia (2.6–3.6 Ma), and Herjia formations (3.6 to ca. 7.0–7.8 Ma), and the older Miocene Ashigong, Garang, and Guidemen formations. These rocks document a generally upward coarsening sequence, characterized by increasing accumulation rates. Increasing gravel content and sizes of its components, changes of bedding dips and source rock types, and marginal growth faults collectively reflect accelerated deformation and uplift of the NE Tibetan Plateau after 8 Ma, punctuated by a sharp increase in sedimentation rate at ca. 3.2 Ma that reflects the boulder conglomerates of the Ganjia formation. Interestingly, much of the vergence of the compressional deformation in the basin is to the south, accommodated by a sequence of six thrusts (F1–F6), which become active one by one progressively later toward the south, undoubtedly contributing to the uplift of this part of the plateau. F1 likely initiated the Guide Basin due to crustal flexure in the Oligocene, F2 was active in the early Miocene, F4 and F5 at ca. 3.6 Ma, and F6 was active in the early Pleistocene. The detailed late Miocene and younger magnetostratigraphy allows us to place much improved time constraints on the deformation and, hence, uplift of northeastern Tibet, which, when compared with ages for events on other parts of the plateau, provides important boundary conditions for the geodynamical evolution of Tibet. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.
Publication Year: 2005
Publication Date: 2005-01-01
Language: en
Type: article
Indexed In: ['crossref']
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Cited By Count: 314
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