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U-Pb Dating of Anatectic Migmatites in the Yunkai Block, Gaozhou,Western Guangdong

王江海 涂湘林 孙大中

中国地球化学学报(英文版)2001,Vol.20Issue(1):20-27,8.
中国地球化学学报(英文版)2001,Vol.20Issue(1):20-27,8.

U-Pb Dating of Anatectic Migmatites in the Yunkai Block, Gaozhou,Western Guangdong

U-Pb Dating of Anatectic Migmatites in the Yunkai Block, Gaozhou,Western Guangdong

王江海 1涂湘林 1孙大中1

作者信息

  • 1. Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China
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摘要

Abstract

The regional migmatites in the Yunkai Block were formed under low-pressure metamorphism. The majority of their protolith are biotite-rich peraluminous gneisses. Detailed field observations, and studies of petrology, spatial distribution of minerals and geochemistry suggest that the leucosomes were derived from anatexis. The single grain zircon U-Pb dating data indicate that a pulse of migmatization occurred at 394~ 449 Ma and may have resulted from the large-scale Caledonian magmatism in the Yunkai Block.

关键词

zircon U-Pb dating/anatectic migmatite/leucosome/Yunkai Block

Key words

zircon U-Pb dating/anatectic migmatite/leucosome/Yunkai Block

分类

天文与地球科学

引用本文复制引用

王江海,涂湘林,孙大中..U-Pb Dating of Anatectic Migmatites in the Yunkai Block, Gaozhou,Western Guangdong[J].中国地球化学学报(英文版),2001,20(1):20-27,8.

基金项目

This work was financially supported by the Guangdong Natural Science Foundation (GNSF Grant Nos. 950680 and 930899). (GNSF Grant Nos. 950680 and 930899)

中国地球化学学报(英文版)

2096-0956

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