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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

gardening

Earth science; Geology

The constant and slow churning of the lunar regolith as the result of meteorite impacts.

geanticline

Earth science; Geology

An anticlinal structure presumed to form in the context of geosynclinal evolution. Not in current use since the development of plate tectonic theory.

geode

Earth science; Geology

Roughly spherical, hollow or partially hollow accumulation of mineral matter. A few centimeters to nearly 0.5 m in diameter. Outer layer of chalcedony lined with crystals that ...

geologic column

Earth science; Geology

The arrangement of rock units in the proper chronological order from youngest to oldest.

geology

Earth science; Geology

The science that deals with the study of the planet Earth–the materials of which it is made, the processes that act to change these materials from one form to another, and the ...

geologic time scale

Earth science; Geology

The chronological sequence of units of Earth time.

geosyncline

Earth science; Geology

A downwarping of the Earth’s crust, either elongate or basin-like, measured in scores of kilometers, in which sedimentary and volcanic rocks accumulate to thicknesses of thousands ...