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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
Circumpolar current
Earth science; Geology
The circular flow of water around Antarctica resulting from the juncture of the west-wind drifts of the Atlantic Pacific and Indian Oceans.
Cataclastic rock
Earth science; Geology
Metamorphic rocks that resemble breccia or poorly sorted sandstone and that form by dynamic metamorphism, which breaks and reorients grain.
Aridity index
Earth science; Geology
The ratio of a regions potential annual evaporation, as determined by its receipt of solar radiation, to its average annual precipitation.
Aggradation
Earth science; Geology
The building up of deposits by rivers within channels which were forced to drop the load they are carrying. This results in bed elevation.
Abyssal floor
Earth science; Geology
The relatively flat surface of the deep ocean floor spreading from an oceanic ridge. It consists of the abyssal plain and the abyssal hill.
Coma
Earth science; Geology
A roughly spherical region of diffuse gas which surrounds the nucleus of a comet. Together, the coma and the nucleus form the comet's head.
Biological indicator
Earth science; Geology
An organism that is used to detect the level of chemical activity in an area, such as lichens used to detect the amount of sulphur dioxide in the air.
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