Petrogenesis of granitoid rocks at the northern margin of the Eastern Ghats Mobile Belt and evidence of syn-collisional magmatism

被引：0
|
作者：
Bhattacharya, S
Kar, R
Moitra, S
机构：
[1] Indian Stat Inst, Kolkata 700108, W Bengal, India
[2] JK Coll, Dept Geol, Purulia 723101, India
来源：
PROCEEDINGS OF THE INDIAN ACADEMY OF SCIENCES-EARTH AND PLANETARY SCIENCES | 2004年 / 113卷 / 04期
关键词：
Eastern Ghats; Singhbhum craton; enclaves; different protoliths; collisional magmatism;
D O I：
暂无
中图分类号：
P [天文学、地球科学];
学科分类号：
07 ;
摘要：
The northern margin of the Eastern Chats Mobile belt against the Singhbhum craton exposes granitic rocks with enclaves from both the high-grade and low-grade belts. A shear cleavage developed in the boundary region is also observed in these granitoids. Field features and petrography indicate syn-tectonic emplacement of these granitoids. Petrology-mineralogy and geochemistry indicate that some of the granitoids are derived from the high-grade protoliths by dehydration melting. Others could have been derived from low-grade protoliths. Moreover, microstructural signatures in these granitoids attest to their syn-collisional emplacement.
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页码：543 / 563
页数：21
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