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Geologic province

Geologic provinces of the world (USGS)

A geologic or geomorphic province is a spatial entity with common geologic or geomorphic attributes.[1] A province may include a single dominant structural element such as a basin or a fold belt, or a number of contiguous related elements. Adjoining provinces may be similar in structure but be considered separate due to differing histories.

Contents

Geologic provinces by originEdit

Province Definition Subcategories Examples
Shield Exposed Precambrian crystalline igneous and metamorphic rocks that form tectonically stable areas
Platform Horizontal or gently-lying sedimentary strata covering a basement of igneous or metamorphic rocks
Orogen Linear or arc-shaped formation where continental crust has been folded, deformed and uplifted to form mountain ranges
Basin Low-lying formation of rock strata formed by tectonic warping of previously horizontal strata
Large igneous province Accumulation of igneous rocks, including liquid rock (intrusive) or volcanic rock formations (extrusive)
Extended crust Continental crust thinned due to extensional strain

Geologic provinces by resourcesEdit

 
US coal regions and provinces.

Some studies classify provinces based upon mineral resources, such as mineral deposits. There are a particularly large number of provinces identified worldwide for petroleum and other mineral fuels, such as the Niger Delta petroleum province.

See alsoEdit

ReferencesEdit

  1. ^ "Geologic Province and Thermo-Tectonic Age Maps". Earthquake Hazards Program. United States Geological Survey. Archived from the original on 7 June 2014. Retrieved 6 June 2014.

External linksEdit