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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

dilatancy

Earth science; Geology

An increase in the bulk volume of rock during deformation. Possibly related to the migration of water into microfractures or pores.

dip slip fault

Earth science; Geology

A fault on which the movement is parallel to the dip of the fault plane.

directed pressure

Earth science; Geology

Pressure applied predominately in one direction, rather than uniformly.

disconformity

Earth science; Geology

An unconformity in which the beds above the unconformity are parallel to the beds below the unconformity.

distributary channels

Earth science; Geology

Stream channels that fan out from the upstream point of the delta and carry the sediments that build the delta.

arête

Earth science; Geology

A narrow, saw-toothed mountain ridge developed by glacier erosion in adjacent cirques .

artesian well

Earth science; Geology

well in which the water in the aquifer is under pressure that raises the water above the point that the well first encounters it.