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Belt Supergroup

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The Barberton Greenstone Belt - #MadeWithFilmora

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Belt series Supergroup 2

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backroad montana drive to look at rocks!

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Idaho Belt Series

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The Precambrian Belt Series

The Belt Supergroup is an assemblage of primarily fine-grained sedimentary rocks and mafic intrusive rocks of late Precambrian (Mesoproterozoic) age. It is more than 15 kilometres (10 mi) thick, covers an area of some 200,000 km2, and is considered to be one of the world's best-exposed and most accessible sequences of Mesoproterozoic rocks. It was named after the Big Belt Mountains in west-central Montana. It is present in western Montana and northern Idaho, with minor occurrences in northwestern Washington and western Wyoming. It extends into Canada where the equivalent rocks, which are called the Purcell Supergroup, are exposed in southeastern British Columbia and southwestern Alberta. The rocks of the Belt Supergroup contain economically significant deposits of lead, zinc, silver, copper, gold, and other metals in a number of areas, and some of the Belt rocks contain fossil stromatolites.
    • Lithology and sedimentology 

    • Paleogeography and environment of deposition 

    • Stratigraphy and distribution 

    • Economic resources