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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 
aftershock
Earth science; Geology
An earthquake that follows and has its epicenter near a larger earthquake.
braided stream
Earth science; Geology
A stream with a complex tangle of converging and diverging channels separated by sand bars or islands.
blow count
Earth science; Geology
The unit of measure for the standard penetration test and representing the number of blows required to drive a 2-inch diameter core sampler one foot through unconsolidated ...
autochthonous clay
Earth science; Geology
Clay originating in the soft sediment or sedimentary rock where it is identified and where it formed either by neoformation (i.e., from dissolved elements) or by transformation ...
bulkhead
Earth science; Geology
(1) A structure separating land and water areas, primarily designed to resist earth pressures. (2) A structure or partition to retain or prevent sliding of the land. A secondary ...
conglomerate
Earth science; Geology
A clastic sedimentary rock composed of lithified beds of rounded gravel mixed with sand.
alcohol thermometer
Earth science; Geology
A liquid-in-glass thermometer containing an alcohol liquid, such as ethanol. Because alcohol has a low freezing point, alcohol thermometers are as minimum thermometers at stations ...
Sub-categories
- Geology (10953)
- Mapping science (105290)
- Oceanography (12332)
- Physical oceanography (42660)
- Remote sensing (8661)
- Seismology (14406)
- Soil science (29216)