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Systems of Stratification Based Primarily on an Ascribed Status Typically

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Systems of stratification based primarily on an ascribed status typically


Definitions:

Greenstone

A metamorphic rock, typically formed under low-grade conditions, that has a greenish color due to the presence of minerals such as chlorite, epidote, or actinolite.

Marble

A metamorphic rock composed of recrystallized calcite or dolomite.

Quartzite

A very hard rock consisting chiefly of quartz grains joined by secondary silica that causes the rock to break across rather than around the grains; formed by metamorphism or by silica cementation of a quartz sandstone.

Slate

A compact, fine-grained, low-grade metamorphic rock that possesses slaty cleavage.

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