Biology, asked by riyabansal6572, 1 year ago

What is isograd ? How is it useful in distinguishing different metamorphic terranes

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Answered by tiger2625
3

In geology, an isograd is a plane of constant metamorphic grade in the field; it separates metamorphic zones of different metamorphic index minerals. ... For example, with increasing temperature and pressure the first minerals to form from a shale are micas, particularly chlorite and biotite.

Answered by sumanrastogi8
1

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