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The Ning-Wu (Nanjing-Wuhu) Basin is one of the most important volcanic basins in the Middle-Lower Yangtze River Valley, eastern China. It consists of four volcanic units, i.e., the Longwangshan, Dawangshan, Gushan, and Niangniangshan Formations. Their LA-ICP MS U-Pb zircon ages are 134.8 �± 1.8, 132.2 �± 1.6, 129.5 �± 0.8, and 126.8 �± 0.6 Ma, respectively. Results of this study indicate that all volcanic rocks in the Ning-Wu Basin were formed in the Early Cretaceous from 135 to 127 Ma, lasting 8�-10 m.y. No Jurassic volcanic activities occurred in any of the volcanic basins of the Middle-Lower Yangtze River Valley, including the Ning-Wu Basin. These new chronological results provide significant evidence for further study of this region to improve our understanding of Mesozoic tectonic, magmatic, and metallogenic processes of eastern China.

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:	Zhang, L (Mr Lejun Zhang)
Author:	Cooke, DR (Professor David Cooke)
ID Code:	74877
Year Published:	2011
Web of Science® Times Cited:	33
Deposited By:	Centre for Ore Deposit Research - CODES CoE
Deposited On:	2011-12-14
Last Modified:	2014-10-15
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