Video encyclopedia



Great Minds: James Hutton, Founder of Geology


Geology in a Minute - What is Geology?


Geological Formation of North America Through the Eons / Orogeny 600 Million Years Ago To Present


What does a Geology PhD Student Do?


Columnar Basalt - Geologist explains spectacular stone columns

Geology is an earth science concerned with the solid Earth, the rocks of which it is composed, and the processes by which they change over time. Geology can also refer to the study of the solid features of any terrestrial planet or natural satellite such as Mars or the Moon. Modern geology significantly overlaps all other earth sciences, including hydrology and the atmospheric sciences, and so is treated as one major aspect of integrated earth system science and planetary science.
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    • Geologic materials 

    • Whole-Earth structure 

    • Geologic time 

    • Dating methods 

    • Geological development of an area 

    • Methods of geology 

    • Planetary geology 

    • Applied geology 

    • History