Geology

Geology

The science that comprises the study of the solid Earth and the processes by which it is shaped and changed.

Industry: Earth science

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Geology

Backshore

Earth science; Geology

Lies between high tide mark and the foot of the beach dune or the limit of effective wave action.

Canali

Earth science; Geology

Pertaining to Venus andM ars. Long sinuous forms, canali are best preserved in regions of subdued relief. They have a high width-to-depth ratio and maintain a remarkably constant width over very ...

Magellan images of highland regions above 2.5 kilometres (1.5 miles) are unusually bright, characteristic of moist soil. However, liquid water does not exist on the surface and cannot account for the ...

Barchan dune

Earth science; Geology

A crescent-shaped dune that forms around a small patch of vegetation, lies perpendicular to the prevailing wind direction, and has a gentle, convex windward slope and a steep, concave leeward slope. ...

Anthracite

Earth science; Geology

A hard, jet-black coal that develops from lignite and bituminous coal through metamorphism, has a carbon content of 92% to 98%, and contains little or no gas. Anthracite burns with an extremely hot, ...

Continental drift

Earth science; Geology

The hypothesis, proposed by Alfred Wegener, that today's continents broke off from a single supercontinent and then ploughed through the ocean floors into their present positions. This explanation of ...

Current metre

Earth science; Geology

An instrument for measuring the velocity of a current. It is traditionally operated by a wheel equipped with vanes of cups which is rotated by the action of the impinging current. A recording device ...