Crystalloblastic
Phyllitic
Mylonitic
Granoblastic
There are a number of others, but these are
the main ones. Crystalloblastic is one where there are minerals like garnet, staurolite, among others which can grow large crystals out of a deforming matrix, often preserving, as poikiloblasts, the S-traces of rolling deformation.
Phyllitic is one with mica and quartz in strongly prefered orientation or foliation,
often with growing garnet.
Mylonite or milled rock. seems to preserve the effects of mechanical grinding of dynamic metamorphism, the texture is grains of many different sizes, but mainly one of grain size reduction with new crystallization .
Granoblastic is an even grained texture, seen in granulites and gneisses, and migmatites, deep-seated metamorphic rocks brought to near melting temperatures
2007-10-12 16:29:24
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answer #1
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answered by Anonymous
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Jim m got it right, but your question is wrong. Strain results in changes in texture, not stress.
2007-10-12 17:36:14
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answer #2
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answered by Amphibolite 7
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