Definition
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Etymology
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Blueschist is a metamorphic rock which is generally blue in color and is formed under conditions of high pressure and low temperature
From French schiste, Greek skhistos i.e. split
Durable Rock, Medium Hardness Rock
Fine Grained Rock, Medium Grained Rock, Opaque Rock
A sedimentary rock, deposit of a submarine turbidity currents and are composed of layered particles
From Medieval Latin turbiditas, from Latin turbidus (turbid). Turbidity current is from 1939
Coarse Grained Rock, Fine Grained Rock, Opaque Rock