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.

7Categories 223518Terms

Add a new term

Contributors in Earth science

Become a Contributors

Earth science > Geology

metal porphyry deposit

Earth science; Geology

A mineral deposit genetically related to a pluton of porphyritic rock, commonly granodiorite. Scarce metals are typically enriched by the passage of hydrothermal fluids through ...

Mesozoic

Earth science; Geology

An era of time during the Phanerozoic eon lasting from 245 million years ago to 66.4 million ago.

metamorphic facies

Earth science; Geology

A set of metamorphic mineral assemblages, repeatedly associated in space and time, such that there is a constant and therefore predictable relationship between mineral composition ...

metamorphic rock

Earth science; Geology

A rock changed from its original form and/or composition by heat, pressure, or chemically active fluids, or some combination of them.

metamorphic zone

Earth science; Geology

A mappable region in which rocks have been metamorphosed to the same degree, as evidenced by the similarity of mineral assemblages in them.

metamorphism

Earth science; Geology

The processes of recrystallization, textural and mineralogical change that take place in the solid state under conditions beyond those normally encountered during diagenesis.