Large-scale climatic fluctuations in the latest Ordovician on the Yangtze block, south Chinaстатья из журнала
Аннотация: Research Article| July 01, 2010 Large-scale climatic fluctuations in the latest Ordovician on the Yangtze block, south China Detian Yan; Detian Yan 1Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China2Key Laboratory of Tectonics and Petroleum Resources of Ministry of Education, University of Geosciences, Wuhan 430074, China Search for other works by this author on: GSW Google Scholar Daizhao Chen; Daizhao Chen * 1Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China *E-mail: dzh-chen@mail.iggcas.ac.cn. Search for other works by this author on: GSW Google Scholar Qingchen Wang; Qingchen Wang 1Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China Search for other works by this author on: GSW Google Scholar Jianguo Wang Jianguo Wang 1Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China Search for other works by this author on: GSW Google Scholar Author and Article Information Detian Yan 1Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China2Key Laboratory of Tectonics and Petroleum Resources of Ministry of Education, University of Geosciences, Wuhan 430074, China Daizhao Chen * 1Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China Qingchen Wang 1Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China Jianguo Wang 1Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China *E-mail: dzh-chen@mail.iggcas.ac.cn. Publisher: Geological Society of America Received: 12 Dec 2009 Revision Received: 30 Jan 2010 Accepted: 02 Feb 2010 First Online: 09 Mar 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 © 2010 Geological Society of America Geology (2010) 38 (7): 599–602. https://doi.org/10.1130/G30961.1 Article history Received: 12 Dec 2009 Revision Received: 30 Jan 2010 Accepted: 02 Feb 2010 First Online: 09 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation Detian Yan, Daizhao Chen, Qingchen Wang, Jianguo Wang; Large-scale climatic fluctuations in the latest Ordovician on the Yangtze block, south China. Geology 2010;; 38 (7): 599–602. doi: https://doi.org/10.1130/G30961.1 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 SocietyGeology Search Advanced Search Abstract The Ordovician-Silurian transition was a critical interval in Earth's history marked by dramatic climatic, oceanic, and biological turnovers. Here we present the chemical index of alteration (CIA) as a proxy of changes in intensity of chemical weathering, and its variations across the Ordovician-Silurian boundaries (Wufeng through Guanyinqiao, to Longmaxi Formations) from Wangjiawan and Nanbazi on the Yangtze block, south China, in order to explore the climatic changes. Our data show that the CIA values of sediments commonly range from 75 to 90 in the Wufeng and Longmaxi Formations, indicating a high degree of chemical weathering and thus a hot and humid climate during deposition. In contrast, a sharp drop in CIA values (most 60–70) in the Guanyinqiao Formation (or Hirnantian) suggests an overall cold and arid climate, interrupted by several intervals of warm climate when deposited. The temporal coincidence of two phases of massive biotic extinctions with the beginning and end of the cold climate epoch, respectively, suggests that the large climatic changes could be one of the main controls on the mass extinctions, although other factors may also have played a role. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.
Год издания: 2010
Авторы: Detian Yan, Daizhao Chen, Qingchen Wang, Jianguo Wang
Издательство: Geological Society of America
Источник: Geology
Ключевые слова: Geochemistry and Elemental Analysis, Geology and Paleoclimatology Research, Paleontology and Stratigraphy of Fossils
Открытый доступ: closed
Том: 38
Выпуск: 7
Страницы: 599–602