期刊
INTERNATIONAL GEOLOGY REVIEW
卷 54, 期 10, 页码 1113-1144出版社
TAYLOR & FRANCIS INC
DOI: 10.1080/00206814.2011.623032
关键词
Aravalli craton; sedimentary geochemistry; clastic provenance; crustal evolution; backarc basin; south Delhi fold belt; Indian shield
类别
资金
- UGC, New Delhi [34-46/2008(SR)]
- CSIR [20-6/2009(i) EU-IV]
The Kumbalgarh Group of the south Delhi fold belt are the main bedrock series exposed in the axial region of the Aravalli craton. Quartzites and greywackes, the chief clastic constituents of this group, are well exposed. Petrographic and bulk-rock analyses of these rocks permit determination of their provenance, tectonic setting of the basin, and the Archaean to Proterozoic crustal evolution. Greywackes comprise quartz, plagioclase, amphiboles, K-feldspar, and rock fragments. Based on mineralogy, we divided the quartzites into three categories: QTZ1 is chiefly composed of quartz with a silty matrix and a minor quantity of feldspars and QTZ2 contains significant mafic minerals as well as quartz and feldspars, whereas QTZ3 is more feldspathic than the other groups. All the lithounits have SiO2/Al2O3 ratios
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据