Earth science

Earth science

Any of several geological sciences that are concerned with the earth, its origins, and all of its various structures and physical forms and phenomena.

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Earth science > Geology

welded tuff

Earth science; Geology

A pyroclastic rock in which glassy clasts have been fused by the combination of the heat retained by the clasts, the weight of overlying material, and hot gases.

wave trough

Earth science; Geology

The low spot between two successive waves.

wave length

Earth science; Geology

The distance between two successive wave crests or troughs.

greenstone belt

Earth science; Geology

A region of greenstones, one of two characteristic regions within cratons.

groin

Earth science; Geology

A wall built out from the shore, usually at perpendicular to it to trap sand carried by longshore currents.

groove

Earth science; Geology

A broad, deep, generally straight furrow carved in bed rock by the abrasive action of debris embedded in a moving glacier. Larger and deeper than a glacial striation.