greenstone belts

Keyword Definition

Term applied to elongate or beltlike areas within Precambrian shields that are characterized by abundant greenstone [ meta].  An individual belt may contain the deformed and metamorphosed rocks of one or more volcano-sedimentary piles, in each of which there is typically a trend from mafic to felsic volcanics.  The resultant volcano-sedimentary complexes are of economic interest as host rocks for presumably volcanogenic metal deposits.

Source: AGI Glossary of Geology, 4th edition, 1997

Category: Geological

Geological keywords, such as “granite”, “lake”.  The definitions are generally taken from the AGI Glossary of Geology.  Keywords with a geographic context (e.g. Cape Smith Fold Belt, Selwyn Basin, Grenville Province) are assigned to a separate category.

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