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| | Geology Article, Geology Information (Site not responding. Last check: 2007-11-01) |
 | | Geology (from Greek γη- (ge-,"the earth") and λογος (logos, "word", "reason")) is the science and study of the earth, its make-up, structure, physicalproperties, history, and the processes that shape it. |
 | | Geology has helped established that the earth is about 4.5 billion years old, and that tectonic plates move over a viscous mantle to form the earth'scrust. |
 | | Subdisciplines within geology proper include structuralgeology, sedimentology and stratigraphy, mineralogy (study of minerals), petrology (study of rocks), geomorphology (study of landforms), seismology (also afield in geophysics) and volcanology (the study of volcanoes). |
| www.anoca.org /earth/theory/geology.html (632 words) |
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