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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 
fluvial channels
Earth science; Geology
Channels associated with rivers and streams that are produced by the action of flowing water, e.g. erosion.
fluvial processes
Earth science; Geology
Processes pertaining to rivers and streams that are produced by the action of flowing water, e.g. erosion.
framework silicates
Earth science; Geology
A class or structural type of silicate characterized by the sharing of all four oxygens of the SiO 4 tetrahedra with neighboring tetrahedra, and with a Si:O ratio of 1:2. Quartz, ...
Galileo Galilei
Earth science; Geology
(1564-1642). Italian mathematician, astronomer, and physicist. First astronomer to use a telescope to observe the skies and discoverer of the major (Galilean) moons of Jupiter, ...
olivine phenocrysts
Earth science; Geology
The relatively large and ordinarily conspicuous crystal of the mineral olivine generated early in prophyritic igneous rocks.
orthoclase
Earth science; Geology
A white, pink or gray mineral of the alkali feldspar group: (KAlSi 3 O 8 ). It is the partly ordered, monoclinic modification of potassium feldspar and is dimorphous with ...
outer core
Earth science; Geology
The upper zone of the Earth’s core, extending from a depth of 2900 km to 5100 km, and including the transition zone. It is presumed to be liquid because it sharply reduces ...
Sub-categories
- Geology (10953)
- Mapping science (105290)
- Oceanography (12332)
- Physical oceanography (42660)
- Remote sensing (8661)
- Seismology (14406)
- Soil science (29216)