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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 meaning of SLATE is a piece of construction material (such as laminated rock) prepared as a shingle for roofing and siding. How to use slate in a sentence.

Slate is a metamorphic rock of sedimentary origin, of Ordovician age (550 million years) and its main components are quartz, sericite and minerals from the chlorite group.

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SLATE meaning: 1. a dark grey rock that can be easily divided into thin pieces, or a small, thin piece of this…. Learn more.

SLATE definition: a fine-grained rock formed by the metamorphosis of clay, shale, etc., that tends to split along parallel cleavage planes, usually at an angle to the planes of stratification. See examples of …

Slate splits into thin layers with smooth surfaces. It ranges in color from gray to black or from red to green, depending on the minerals contained in the shale from which it formed.

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In February 2009, slate.fr, a French-language offshoot of Slate, was launched. Its five founders were: Le Monde editors Jean-Marie Colombani and Éric Leser [fr], Libération and 20 minutes editor Johan …