Geochemistry and LA-ICP-MS zircon U-Pb age of Late Carboniferous Shalazhashan pluton on the northern margin of the Alxa Block, Inner Mongolia and their implications

YANG Qi-di; ZHANG Lei; WANG Tao; SHI Xing-jun; ZHANG Jian-jun; TONG Ying; GUO Lei; GENG Jian-zhen

Geological Bulletin of China > 2014 > 33(6): 776-787.

YANG Qi-di, ZHANG Lei, WANG Tao, SHI Xing-jun, ZHANG Jian-jun, TONG Ying, GUO Lei, GENG Jian-zhen. 2014: Geochemistry and LA-ICP-MS zircon U-Pb age of Late Carboniferous Shalazhashan pluton on the northern margin of the Alxa Block, Inner Mongolia and their implications. Geological Bulletin of China, 33(6): 776-787.

Citation:

PDF (896 KB)

Geochemistry and LA-ICP-MS zircon U-Pb age of Late Carboniferous Shalazhashan pluton on the northern margin of the Alxa Block, Inner Mongolia and their implications

Institute of Geology, Chinese Academy of Geological Sciences, Beijing 100037, China;2. China University of Geosciences, Beijing 100083, China;3. Tianjin Institute of Geology and Mineral Resources, Tianjin 300170, China

More Information

Graphical Abstract

Abstract

Abstract

The Wenduermaodao biotite granodiorite pluton is located in Shalazhashan on the northern margin of the Alxa Block. LA-ICP-MS U-Pb dating of zircons from the pluton yielded an age of 301±2Ma, which indicates that the pluton is a Late Carboniferous intrusion. According to the geochemical analysis, the Wenduermaodao pluton has high SiO2 (67.23%~72.57%), K2O(1.14 %~6.13%) and Al2O3(13.67%~17.29%), suggesting that it is calc-alkaline and peraluminous (A/CNK=0.98~1.10). This intrusion has low REE content (38.86×10-6~74.39×10-6) with a relative enrichment of LREE and week Eu anomalies (δEu=0.9~1.3). The primitive mantle normalized trace element patterns are characterized by the enrichment of the LILE (Rb, Th, K) and depletion of HFSE (Nb, Ta, P, Ti), showing the features of I-type granite. Combined with regional geology, the authors hold that the pluton was emplaced in a subduction setting and derived from mixed sources of oceanic crust and juvenile crust, and the subduction of Paleo Asian plate beneath the northern Alxa Block took place at 301Ma or earlier.
- Alxa,
- Shalazhashan,
- Late Carboniferous,
- island arc,
- LA-ICP-MS zircon U-Pb dating

FullText(HTML)

References (0)

Cited By

Get Citation

PDF

XML

Article views (2433) PDF downloads (918)

Turn off MathJax

Article Contents

Abstract

	LIU Guanglian, WANG Zhouxin, ZHANG Daming, ZHANG Yong, LIU Zhigang, MA Zhongyuan. 2024: Age, geochemistry and formation environment of diorite porphyrite in Kudeerte gold-polymetallic deposit, East Kunlun. Geological Bulletin of China, 43(7): 1133-1148. DOI: 10.12097/gbc.2022.10.027
	WANG Yuanyuan, YANG Xiaoqiang, A Zhongming, LYU Junwei, FU Duowang, ZHANG Yejun. 2023: Zircon U-Pb age, geochemistry of granites in Shaleketeng area, West Junggar, Xinjiang and its constraints on the post-collision tectonic environment. Geological Bulletin of China, 42(4): 600-615. DOI: 10.12097/j.issn.1671-2552.2023.04.009
	HUANG Yongjin, TAO Chunhui, LIANG Jin, LIAO Shili, YANG Weifang. 2021: Geochemistry and provenance of the sediment core from the rift valley of the Southwest Indian Ridge(49.58°E). Geological Bulletin of China, 40(2-3): 320-329. DOI: 10.12097/gbc.dztb-40-2-3-320
	LI Zhipei, BAI Jianke, RU Yanjiao, LI Ting, LI Xiaoying. 2021: Age and petro-geochemistry of High-aluminum basalts from northern Zhaosu County of Xinjiang The sign to convergent margins of Early Carboniferous plate in West Tianshan. Geological Bulletin of China, 40(6): 864-879. DOI: 10.12097/gbc.dztb-40-6-864
	SHI Jizhong, LU Jincai, WEI Jianshe, NIU Yazhuo, JIANG Ting, HAN Xiaofeng, XU Wei. 2018: Petrology, geochemistry and sedimentary environment of Permian siliceous rocks in Yingen-Ejin basin and its adjacent areas. Geological Bulletin of China, 37(1): 120-131. DOI: 10.12097/gbc.dztb-37-1-120
	XU Meng-jing, LI Cai, WU Yan-wang, XIE Chao-ming. 2014: Geochemical characteristics and sedimentary environments of siliceous rocks in Guomangco ophiolitic mélange of Tibet. Geological Bulletin of China, 33(7): 1061-1066. DOI: 10.12097/gbc.20140713
	LIN Jia-shan, XIE Yuan, LIU Jian-qing, ZHAO Zhan, JING Xiao-yan, LUO Yang. 2012: Organic geochemical characteristics of hydrocarbon source rocks in upper Ordovician Wufeng Formation of northern Guizhou and their paleo-environmental significance. Geological Bulletin of China, 31(11): 1922-1927. DOI: 10.12097/gbc.201211017
	QI Sheng-sheng, DENG Jin-fu, ZHAO Cheng-xiang, HU Xu-li, SHI Lian-chang, CHEN Jian. 2011: The evidence for the existence of Early Cretaceous continental rift in West Qinling orogenic belt: the significance of the newly built Maixiushan Group in Tongren area of Qinghai Province. Geological Bulletin of China, 30(11): 1706-1715. DOI: 10.12097/gbc.20111107
	DAI Jie-rui, PANG Xu-gui, GONG Yu-xin, WANG Hong-jin. 2010: Agro-ecological geochemistry survey and evaluation of Weihai City, Shandong Province, China. Geological Bulletin of China, 29(9): 1391-1398. DOI: 10.12097/gbc.20100916
	CHEN Ming, ZHANG Lingjin, LIU Xiaoduan, SU Yangshui, ZHANG Qianjin. 2002: Geochemical engineering--A new branch of geochemistry for environmental improvement. Geological Bulletin of China, 21(7): 441-449. DOI: 10.12097/gbc.200207110

Geochemistry and LA-ICP-MS zircon U-Pb age of Late Carboniferous Shalazhashan pluton on the northern margin of the Alxa Block, Inner Mongolia and their implications

Abstract

Related Articles

Catalog

Geochemistry and LA-ICP-MS zircon U-Pb age of Late Carboniferous Shalazhashan pluton on the northern margin of the Alxa Block, Inner Mongolia and their implications

Abstract

Related Articles

Catalog

Export File

Citation

Format

Content