#metamorphism

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Composition includes: biotite, muscovite, chlorite, feldspars, oxides, and quartz. Feldspar poikilob

Composition includes: biotite, muscovite, chlorite, feldspars, oxides, and quartz. Feldspar poikiloblasts with inclusions of quartz and oxides are prominent throughout much of the sample. Most poikiloblasts occurred synkinematic to the 1st deformation event (D1) and rotation occurred. D1 had a direct effect on the foliation (S1) of minerals that already crystallized. D2 led to crystallization of quartz which is seen in quartz ribbons and pressure fringes throughout the sample.


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Phase diagram for silica.

Phase diagram for silica.


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