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Southwest U.S.-East Antarctic (SWEAT) connection; a hypothesis

E. M. Moores
Southwest U.S.-East Antarctic (SWEAT) connection; a hypothesis
Geology (Boulder) (May 1991) 19 (5): 425-428


A hypothesis for a late Precambrian fit of western North America with the Australia-Antarctic shield region permits the extension of many features through Antarctica and into other parts of Gondwana. Specifically, the Grenville orogen may extend around the coast of East Antarctica into India and Australia. The Wopmay orogen of northwest Canada may extend through eastern Australia into Antarctica and thence beneath the ice to connect with the Yavapai-Mazatzal orogens of the southwestern United States. The ophiolitic belt of the latter may extend into East Antarctica. Counterparts of the Precambrian-Paleozoic sedimentary rocks along the U.S. Cordilleran miogeocline may be present in the Transantarctic Mountains. Orogenic belt boundaries provide useful piercing points for Precambrian continental reconstructions. The model implies that Gondwana and Laurentia drifted away from each other on one margin and collided some 300 m.y. later on their opposite margins to form the Appalachians.

ISSN: 0091-7613
EISSN: 1943-2682
Serial Title: Geology (Boulder)
Serial Volume: 19
Serial Issue: 5
Title: Southwest U.S.-East Antarctic (SWEAT) connection; a hypothesis
Author(s): Moores, E. M.
Affiliation: Univ. Calif. at Davis, Dep. Geol., Davis, CA, United States
Pages: 425-428
Published: 199105
Text Language: English
Publisher: Geological Society of America (GSA), Boulder, CO, United States
References: 44
Accession Number: 1991-023745
Categories: StratigraphySolid-earth geophysics
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. sketch maps
S90°00'00" - S65°00'00", W40°00'00" - E171°00'00"
N26°00'00" - N37°00'00", W114°45'00" - W93°30'00"
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data supplied by Institute of Geological and Nuclear Sciences Limited (GNS Science), Lower Hutt, New Zealand
Update Code: 1991
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