دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: metamorphic rock that has a layered look not necessarily associated with the original layering in sedimentary rock.

n: metamorphic rock that appears massive and homogeneous, i.e., without the layered look of foliated metamorphics.

n: a coarse-grained, foliated metamorphic rock that splits easily into layers. It is formed when shale under deep burial becomes slate and then, with more intense metamorphism, becomes schist.

a crystalline metamorphic rock that can be split into think layers because of the bedded mineral arrangements.