Mesozoic high-K granitic rocks from the eastern Dabie Mountains,Central China and their geological implications

被引：9

作者：

魏春景

张立飞

王式洸

机构：

来源：

ScienceinChina(SeriesD:EarthSciences) | 2001年 / 06期

基金：

中国国家自然科学基金;

关键词：

geochemistry; granitic rock; Dabie Mountains;

D O I：

暂无

中图分类号：

P588.1 [岩浆岩（火成岩）];

学科分类号：

070901 ;

摘要：

The Mesozoic high-K granitic intrusions from the eastern Dabie Mountains, Central China, can be divided into three superunits namely the Yaohe, Penghe and Huangbai superunits. The Yaohe superunit is compositionally dominated by quartz monzonite extending as a band in NW direction which is differently foliated, contains numerous dioritic enclaves and has been dated as 174 Ma. The Penghe superunit, widely distributed in the field, varies in composition but is dominated by quartz monzonitic and granitic rocks, which is massive in structure, has well developed with dioritic enclaves and is aged in 125-127 Ma. The Huangbai superunit is mainly composed of granitic composition which is massive in structure, rarely contains dioritic enclaves and is aged in 120-111 Ma. These three superunits of granitic intrusions can also be clearly distinguished in geochemistry. They have recorded an orogenic process of the Dabie Mountains from the end of regional metamorphism to the overprinting of the circum-Pacific tectonic

引用

页码：525 / 534

页数：10

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