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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 
metamorphic
Earth science; Geology
Any rock derived from pre-existing rocks by mineralogic, chemical and/or structural changes, essentially in the solid state, in response to marked changes in tempeature, pressure, ...
metasomatism
Earth science; Geology
The metamorphic processes that occur as a result of the passage of chemically active fluids through a rock, adding to or removing constituents during metamorphism.
meteorite
Earth science; Geology
Any solid object from interplanetary space that has fallen to the Earth’s surface without being vaporized by frictional heating during its passage through the atmosphere; a stony ...
meteorite crater
Earth science; Geology
An impact crater formed by the falling of a large meteorite onto a surface.
meteoroid
Earth science; Geology
Any relatively small fragment of solid material associated with a meteor and made luminous as a result of friction during its passage through the Earth’s atmosphere.
microcline
Earth science; Geology
A white, gray, brick-red or green mineral of the alkali feldspar group: (KAlSi 3 O 8 ). It is the fully ordered, triclinic modification of potassium feldspar and is dimorphous ...
mineral
Earth science; Geology
A naturally occurring inorganic element or compound having an orderly internal structure and characteristic chemical composition, crystal form, and physical properties.
Sub-categories
- Geology (10953)
- Mapping science (105290)
- Oceanography (12332)
- Physical oceanography (42660)
- Remote sensing (8661)
- Seismology (14406)
- Soil science (29216)