Journal of Geological Society of India (Online archive from Vol 1 to Vol 78)

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Grain Growth Parameters and Mineral Zoning: A Comparative Study from the Humboldt Mountains, East Antarctica


Affiliations
1 Geological Survey of India, Shillong, India
2 Department of Geology, University of Delhi, Delhi, India
     

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Certain aspects of regional metamorphism of East Antarctica granulite terrain in the Humboldt Mountains are revealed through a study of the grain size of garnets and chemical zoning present in them. The Ferry and Cashman approach to grain size (Crystal size Distribution-CSD) development and Walther and Wood approach of grain growth are utilised to draw intersting conclusions. The growth of garnets was slower in the deeper levels but produced large, chemically unzoned grains.

Keywords

Mineralogy, Crystallography, Metamorphism, East Antarctica.
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  • Grain Growth Parameters and Mineral Zoning: A Comparative Study from the Humboldt Mountains, East Antarctica

Abstract Views: 165  |  PDF Views: 1

Authors

N. C. Pant
Geological Survey of India, Shillong, India
P. K. Verma
Department of Geology, University of Delhi, Delhi, India

Abstract


Certain aspects of regional metamorphism of East Antarctica granulite terrain in the Humboldt Mountains are revealed through a study of the grain size of garnets and chemical zoning present in them. The Ferry and Cashman approach to grain size (Crystal size Distribution-CSD) development and Walther and Wood approach of grain growth are utilised to draw intersting conclusions. The growth of garnets was slower in the deeper levels but produced large, chemically unzoned grains.

Keywords


Mineralogy, Crystallography, Metamorphism, East Antarctica.