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Paleogeographic implications of non-North American sediment in the Mesoproterozoic upper Belt Supergroup and Lemhi Group, Idaho and Montana, USA

Stewart, Eric D.; Link, Paul K.; Fanning, Christopher; Frost, Carol D.; McCurry, Michael


A non-North American provenance for the lower Belt Supergroup of North America has been used to support various pre-Rodinian paleogeographic reconstructions. Unlike the lower Belt Supergroup, most upper Belt Supergroup provenance studies have inferred Laurentian sediment sources. We test this hypothesis by analyzing U-Pb and Lu-Hf isotopes on detrital zircons, and whole-rock Nd isotopes from the Missoula (upper Belt Supergroup) and Lemhi Groups, and comparing to possible Laurentian sources....[Show more]

CollectionsANU Research Publications
Date published: 2010
Type: Journal article
Source: Geology
DOI: 10.1130/G31194.1


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