|Table of Contents|

40Ar/39Ar Dating of Yingyangguan Tectonic Melange in the Eastern Guangxi, China and Its Tectonic Implications(PDF)

《地球科学与环境学报》[ISSN:1672-6561/CN:61-1423/P]

Issue:
2019年第06期
Page:
631-643
Research Field:
基础地质与矿产地质
Publishing date:

Info

Title:
40Ar/39Ar Dating of Yingyangguan Tectonic Melange in the Eastern Guangxi, China and Its Tectonic Implications
Author(s):
WANG Ling-zhan1 TIAN Yang12* LI Xiang1 TU Bing1 TAN Juan-juan1 XIE Guo-gang1 ZHANG Zong-yan1 ZHANG Jian-yu1
(1. Wuhan Center of China Geological Survey(Central South China Innovation Center for Geosciences), Wuhan 430205, Hubei, China; 2. School of Earth Sciences, China University of Geosciences, Wuhan 430074, Hubei, China)
Keywords:
tectonic melange sericite muscovite 40Ar/39Ar age tectonothermal event tectonic evolution deformation sequence Guangxi
PACS:
P588.36; P597+.3
DOI:
-
Abstract:
Yingyangguan tectonic melange is distributed in the junction of Hunan, Guangdong and Guangxi, China, which is tectonically located in the southwestern segment of Yangtze block and Cathaysia block joint belt. Sericite and muscovite samples collected from meta-sedimentary and meta-volcanic clastic rocks of Yingyangguan tectonic melange yielded 40Ar/39Ar plateau ages of(377.8±2.6),(320.4±2.1),(287.6±2.1),(227.4±1.5),(223.5±1.5)Ma, and isochrone ages of(209±10),(172±48)Ma, respectively. 40Ar/39Ar chronology indicates Yingyangguan tectonic melange suffers complicated tectonic evolution from Late Paleozoic to Early Mesozoic, including tectonothermal events of Late Devonian, Late Carboniferous, Early Permian, Late Triassic and Middle Jurassic. It enhances the understanding about tectonic deformation sequence of Yingyangguan tectonic melange, and provides precise timing constraints for discussion and comparison of regional tectonic processes.

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Last Update: 2019-11-19