(a) = blastomere n. at blasto-, comb._form affix; (b) a mass of rock formed by cleavage.

see quot.

A block of the earth's surface which has been raised relative to the surrounding land and is bounded by faults on some or all sides.

a mass of displaced rock (sometimes of extensive area) bounded by or between two faults.

the displaced mass of rock in an overfault.

A part of a nappe which has become detached from its parent mass by sliding or by erosion of intervening parts.

Geology. A relatively thin, broad mass of rock situated between two approximately parallel thrust faults, esp. when these make a small angle with…

a block of depressed or elevated crust bounded by rifts or lying within a rift; a graben or a horst.

Geology. A sheet of rock which has moved horizontally over neighbouring strata as a result of overthrusting or recumbent folding.