META-SEDIMENTARY CORDIERITE-GEDRITE ROCKS OF ARCHEAN AGE NEAR YELLOWKNIFE, CANADA

被引：14

作者：

KAMINENI, DC

机构：

[1] Geological Survey of Canada

来源：

PRECAMBRIAN RESEARCH | 1979年 / 9卷 / 3-4期

关键词：

D O I：

10.1016/0301-9268(79)90008-1

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

Archean metasedimentary rocks near Yellowknife comprising metagreywacke and metaargillite, form broad aureoles around granite plutons. Cordierite-gedrite greywackes constitute an important metamorphic horizon within the aureoles. The chemical composition of the cordierite-gedrite greywackes, from Yellowknife compare well with greywackes reported from other localities. The cordierite-gedrite rocks and rocks free of these minerals have slight compositional differences which are thought to be of sedimentary origin and are the main controlling factors in the formation of coexisting gedrite and cordierite. © 1979.

引用

页码：289 / 301

页数：13

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