Top: Science: Earth Sciences: Paleontology: Terminology: G



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Geochemistry

The science that deals with chemical changes in and composition of the earth's crust.


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Geologic Time

The period of time extending from the formation of the earth to the present.


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Geologic Time Scale

An arbitrary chronologic sequence of geologic events, used as a measure of the age of any part of geologic time, usually presented in the form of a chart showing the names of the various rock-stratigraphic, time-stratigraphic, or geologic-time units.


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Geology

The study of the planet Earth - the materials of which it is made, the processes that act on these materials, the products formed, and the history of the planet and its life forms since its origin. 



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