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Geochronology of the volcanic rocks in the Lu-Zong basin and its significance

Citation

Zhou, TF and Fan, Y and Yuan, F and Lu, SM and Shang, SG and Cooke, DR and Meffre, SJM and Zhao, GC, Geochronology of the volcanic rocks in the Lu-Zong basin and its significance, Science in China Series D-Earth Sciences, 51, (10) pp. 1470-1482. ISSN 1006-9313 (2008) [Refereed Article]

DOI: doi:10.1007/s11430-008-0111-7

Abstract

The Lu-Zong (Lujiang-Zongyang) basin is one of the most important volcanic basins in the middle and lower reaches of the Yangtze River area, China. It comprises four shoshonitic volcanic units, which are, in an ascending order, the Longmenyuan, Zhuanqiao, Shuangmiao and Fushan Groups. The LA-ICP MS U-Pb zircon ages of the four units are: 134.8±1.8 Ma for the Longmenyuan Group, 134.1±1.6 Ma for the Zhuanqiao Group, 130.5±0.8 Ma for the Shuangmiao Group, and 127.1±1.2 Ma for the Fushan Group. The results indicate that all volcanic rocks in the Lu-Zong basin were formed in the Early Cretaceous from about 135 Ma to 127 Ma, lasting 8-10 Ma. There were no Jurassic volcanic activities in all the volcanic basins including the Lu-Zong basin in the middle and lower reaches of the Yangtze River area. This work has provided new chronological results for the further study and understanding of the tectonic, magmatic and metallogenic processes of eastern China in the Mesozoic. © Science in China Press and Springer-Verlag GmbH 2008.

Item Details

Item Type:Refereed Article
Research Division:Earth Sciences
Research Group:Geology
Research Field:Geochronology
Objective Division:Expanding Knowledge
Objective Group:Expanding Knowledge
Objective Field:Expanding Knowledge in the Earth Sciences
Author:Cooke, DR (Professor David Cooke)
Author:Meffre, SJM (Dr Sebastien Meffre)
ID Code:56652
Year Published:2008
Web of Science® Times Cited:97
Deposited By:Centre for Ore Deposit Research - CODES CoE
Deposited On:2009-05-19
Last Modified:2009-05-21
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