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Further Shrimp Geochronology on the Early Cambrian of South China

Compston, William; Zhang, Zichao; Cooper, J A; Guogan, Ma; Jenkins, R J F

Description

Zircon 206Pb/238U ages are reported for bentonites from two Cambrian sections in South China, the Meishucun and the Fandian. The analyzed zircons vary widely in age because of the presence of detrital and altered grains. Spot ages were corrected for calibration drift during analysis, and the age of reference zircon SL13 was calibrated as 580 Ma against other standards using SIMS. Use of mixture modeling was essential to resolve the different age components and to identify the volcanic ages. Two...[Show more]

CollectionsANU Research Publications
Date published: 2008
Type: Journal article
URI: http://hdl.handle.net/1885/25744
Source: American Journal of Science
DOI: 10.2475/04.2008.01

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