Portal de Periódicos da CAPES

Petrogenesis of high-K, calc-alkaline and shoshonitic intrusive rocks in the Tongling area, Anhui Province (eastern China), and their tectonic implications

2013; Geological Society of America; Volume: 126; Issue: 1-2 Linguagem: Inglês

10.1130/b30613.1

1943-2674

Chunxia Wu, Shuwen Dong, Paul T. Robinson, Carol D. Frost, Yang Gao, Ming Lei, Qianwang Chen, H. Qin,

Geochemistry and Geologic Mapping

Research Article| January 01, 2014 Petrogenesis of high-K, calc-alkaline and shoshonitic intrusive rocks in the Tongling area, Anhui Province (eastern China), and their tectonic implications Cailai Wu; Cailai Wu † 1State Key Laboratory of Continental Tectonics and Dynamics, Institute of Geology, Chinese Academy of Geological Sciences, Beijing 100037, China †E-mail: wucailai@126.com Search for other works by this author on: GSW Google Scholar Shuwen Dong; Shuwen Dong 2Chinese Academy of Geological Sciences (CAGS), Beijing 100037, China Search for other works by this author on: GSW Google Scholar Paul T. Robinson; Paul T. Robinson 1State Key Laboratory of Continental Tectonics and Dynamics, Institute of Geology, Chinese Academy of Geological Sciences, Beijing 100037, China Search for other works by this author on: GSW Google Scholar B. Ronald Frost; B. Ronald Frost 3Department of Geology and Geophysics, University of Wyoming, Laramie, Wyoming 82072, USA Search for other works by this author on: GSW Google Scholar Yuanhong Gao; Yuanhong Gao 1State Key Laboratory of Continental Tectonics and Dynamics, Institute of Geology, Chinese Academy of Geological Sciences, Beijing 100037, China Search for other works by this author on: GSW Google Scholar Min Lei; Min Lei 1State Key Laboratory of Continental Tectonics and Dynamics, Institute of Geology, Chinese Academy of Geological Sciences, Beijing 100037, China Search for other works by this author on: GSW Google Scholar Qilong Chen; Qilong Chen 1State Key Laboratory of Continental Tectonics and Dynamics, Institute of Geology, Chinese Academy of Geological Sciences, Beijing 100037, China Search for other works by this author on: GSW Google Scholar Haipeng Qin Haipeng Qin 1State Key Laboratory of Continental Tectonics and Dynamics, Institute of Geology, Chinese Academy of Geological Sciences, Beijing 100037, China Search for other works by this author on: GSW Google Scholar Author and Article Information Cailai Wu † 1State Key Laboratory of Continental Tectonics and Dynamics, Institute of Geology, Chinese Academy of Geological Sciences, Beijing 100037, China Shuwen Dong 2Chinese Academy of Geological Sciences (CAGS), Beijing 100037, China Paul T. Robinson 1State Key Laboratory of Continental Tectonics and Dynamics, Institute of Geology, Chinese Academy of Geological Sciences, Beijing 100037, China B. Ronald Frost 3Department of Geology and Geophysics, University of Wyoming, Laramie, Wyoming 82072, USA Yuanhong Gao 1State Key Laboratory of Continental Tectonics and Dynamics, Institute of Geology, Chinese Academy of Geological Sciences, Beijing 100037, China Min Lei 1State Key Laboratory of Continental Tectonics and Dynamics, Institute of Geology, Chinese Academy of Geological Sciences, Beijing 100037, China Qilong Chen 1State Key Laboratory of Continental Tectonics and Dynamics, Institute of Geology, Chinese Academy of Geological Sciences, Beijing 100037, China Haipeng Qin 1State Key Laboratory of Continental Tectonics and Dynamics, Institute of Geology, Chinese Academy of Geological Sciences, Beijing 100037, China †E-mail: wucailai@126.com Publisher: Geological Society of America Received: 18 Sep 2011 Revision Received: 28 May 2013 Accepted: 14 Sep 2013 First Online: 08 Mar 2017 Online ISSN: 1943-2674 Print ISSN: 0016-7606 © 2013 Geological Society of America GSA Bulletin (2014) 126 (1-2): 78–102. https://doi.org/10.1130/B30613.1 Article history Received: 18 Sep 2011 Revision Received: 28 May 2013 Accepted: 14 Sep 2013 First Online: 08 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation Cailai Wu, Shuwen Dong, Paul T. Robinson, B. Ronald Frost, Yuanhong Gao, Min Lei, Qilong Chen, Haipeng Qin; Petrogenesis of high-K, calc-alkaline and shoshonitic intrusive rocks in the Tongling area, Anhui Province (eastern China), and their tectonic implications. GSA Bulletin 2014;; 126 (1-2): 78–102. doi: https://doi.org/10.1130/B30613.1 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 Mesozoic intermediate-silicic intrusive rocks in the Tongling area, Anhui Province, eastern China, include a high-K, calc-alkaline series and a shoshonitic series. Rocks of the calc- alkaline series comprise more than 90% of the total and consist chiefly of gabbro-diorite, granodiorite, quartz monzodiorite, and porphyritic quartz monzodiorite. These rocks are associated with important skarn-type copper-iron deposits. They contain three types of enclaves: mica-rich varieties that appear to be residues of partially melted pelitic rock, mafic quartz monzodiorite, and microdiorite. The shoshonitic series consists of pyroxene monzodiorite, monzonite, and quartz monzonite, which are commonly associated with skarn-type gold deposits. Enclaves in these rocks are typically pyroxene-rich or amphibole-rich varieties or amphibole gabbros. Zircon sensitive high-resolution ion microprobe (SHRIMP) U-Pb age data suggest that the granodiorites, quartz monzodiorites, and gabbro-diorites of the calc-alkaline series were generated at ca. 146–142, 143, and 140 Ma, respectively. The shoshonitic rocks range in age from 143 to 136 Ma. Although there is some overlap in reported ages of the two series, contact relations indicate that the shoshonitic rocks postdate the calc-alkaline varieties. On the basis of the geochemistry of the two series and the character of their enclaves, the shoshonitic series is thought to have formed primarily by differentiation of a mantle-derived, weakly contaminated, alkali basalt magma, whereas the high-K, calc-alkaline series reflects mixing of differentiated mantle and crustal melts, followed by assimilation–fraction crystallization (AFC) processes. The magmatic activity may have been related to reactivation of the Tongling-Deijiahui structural zone in response to rapid, highly oblique subduction of the paleo–Pacific plate beneath South China. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.