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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 
fold and thrust mountains
Earth science; Geology
Mountains, characterized by extensive folding and thrust faulting, that form at convergent plate boundaries on continents.
foot wall block
Earth science; Geology
The body of rock that lies below an inclined fault plane. compare hanging wall block
formation water
Earth science; Geology
The water, held in pore volume in sedimentary rocks, that has persisted with little change in composition since it was buried with the sediment.
foreset bed
Earth science; Geology
Inclined layers of sediment deposited on the advancing margin of a growing delta or along the slip face of a sand dune.
foreshock
Earth science; Geology
A minor tremor that precedes an earthquake. An increase in seismicity may signal that a major release of strain energy is about to occur.
fossil
Earth science; Geology
Evidence in rock of the presence of past life, such as a dinosaur bone, an ancient clam shell, or the footprint of a long-extinct animal.
fossil fuel
Earth science; Geology
A hydrocarbon (coal or petroleum) that can be extracted from the Earth for use as a fuel. Fossil fuels are non-renewable energy sources.
Sub-categories
- Geology (10953)
- Mapping science (105290)
- Oceanography (12332)
- Physical oceanography (42660)
- Remote sensing (8661)
- Seismology (14406)
- Soil science (29216)