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The Best Attractions In Slate Islands

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Slate is a fine-grained, foliated, homogeneous metamorphic rock derived from an original shale-type sedimentary rock composed of clay or volcanic ash through low-grade regional metamorphism. It is the finest grained foliated metamorphic rock. Foliation may not correspond to the original sedimentary layering, but instead is in planes perpendicular to the direction of metamorphic compression.The foliation in slate is called slaty cleavage. It is caused by strong compression causing fine grained clay flakes to regrow in planes perpendicular to the compression. When expertly cut by striking parallel to the foliation, with a specialized tool in the quarry, ...
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The Best Attractions In Slate Islands

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