What texture results from the alignment of abundant, coarse-grained, mica flakes in a medium grade regional metamorphic rock?
A)schistosity
B)gneissic banding
C)slaty cleavage
D)shatter cones

Question

Quizplus · Accepted Answer

Schistosity is a texture that results from the alignment of abundant, coarse-grained, mica flakes in a medium grade regional metamorphic rock. This alignment gives the rock a distinct layering or foliation that is visible to the naked eye. Gneissic banding is a similar texture, but is more commonly associated with higher grade metamorphic rocks. Slaty cleavage is a texture that results from the alignment of microscopic clay minerals in a low-grade metamorphic rock. Shatter cones are not related to metamorphism, but are a type of shock metamorphic feature associated with impact events.

What Texture Results from the Alignment of Abundant, Coarse-Grained, Mica