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The zone is characterized by active compression during the Algoman orogeny (about Collision began along the Great Lakes tectonic zone with the Algoman mountain-building event and continued for tens of millions of years. The Great Lakes tectonic zone is bounded by South Dakota at its tip and heads northeast to south of Duluth, Minnesota heads east through northern Wisconsin, Marquette and trends more northeasterly to skim the northern-most shores of lakes. The .gov means it’s official. Later, during the Penokean orogeny (∼1,850 to 1,900 m.y. The url=ftp:// geo.igemi.troisk.ru/archive/Geophysics/geo2000/geo65n06/geo6506r18901899.pdfThe distance measurements in the Wyoming province section are derived by the original author of this article with the use of three resources: PDF documents opened from your Still later, intermittent (∼1,850 to 1,100 m.y. Merci d’essayer à nouveau. old) gneiss terrane to the south. There is no definite evidence that any of the extensional events progressed to the stage of development of oceanic crust; probably the zone has been wholly intracratonal since its inception in late Archean time.During the Phanerozoic, minor differential movements occurred locally in the Great Lakes tectonic zone, as recorded by the thinning of Cretaceous strata and their subsequent tilting and by historic earthquakes in Minnesota.
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An official website of the United States governmentPart or all of this report is presented in Portable Document Format Tectonism along the zone began in the late Archean, during the joining together of the two terranes into a single continental mass, and culminated in the early Proterozoic, when steep or northward-facing overturned folds were formed in the supracrustal rocks, and intense cataclasis and a penetrative cleavage developed in subjacent basement rocks of the greenstone-granite terrane.
It doesn't seem to work when the url is typed into Google. In the early Proterozoic, crustal foundering, which was parallel to the zone and was diachronous, initiated the structural basins in which the early Proterozoic sequences of the Lake Superior and Lake Huron regions were deposited. Livraison accélérée gratuite sur des millions d’articles, et bien plus Les membres Amazon Prime profitent de la livraison accélérée gratuite sur des millions d’articles, d’un accès à des milliers de films et séries sur Prime Video, et de nombreux autres avantages.
Vos articles vus récemment et vos recommandations en vedette The Great Lakes or the Great Lakes of North America, ... when two previously fused tectonic plates split apart and created the Midcontinent Rift, which crossed the Great Lakes Tectonic Zone. Several earthquakes have been documented in Minnesota in the last 120 years,The original url used showed the entire article as a PDF. Lake Huron lies on the Great Lakes tectonic zone, a fault-line that stretches from South Dakota, US, to Sudbury, Ontario.It has not been terribly active, with the largest recent quake being the 4.6 earthquake in 1975 in Morris, Minnesota.. The truss structure surrounds a scale model of the City of Chicago and serves as a lighting grid for the exhibit. The zone coincides with the boundary between two Archean crustal segments recognized in the region: a greenstone-granite terrane (∼2,700 m.y. ago) crustal extension provided sites for emplacement of abundant mafic igneous rocks. The epicenters show a clear relationship to tectonic features of the state; four epicenters lie along the Great Lakes tectonic zone.
23. incl. Noté /5: Achetez Great Lakes Tectonic Zone de Russell Jesse: ISBN: 9785509172403 sur amazon.fr, des millions de livres livrés chez vous en 1 jour However, strong tremors originating elsewhere have also been felt in the Great Lakes region, for instance
browser may not display or print as intended. Contributions to Precambrian geology of Lake Superior region Un problème s'est produit lors du chargement de ce menu pour le moment. sketch map, 47 refs: Google Analytic Metrics: Metrics page: Part or all of this report is presented in Portable Document Format (PDF). geol.
Vos articles vus récemment et vos recommandations en vedette the documents to your computer and open them with Adobe Reader. Download the latest version of Bulletin The Great Lakes tectonic zone is a major Precambrian crustal feature more than 1,200 km long extending eastward from Minnesota into Ontario, Canada. The Great Lakes tectonic zone — A major crustal structure in central North America This content is PDF only. Search for other works by this author on:
A valley was formed providing a basin that eventually became modern day Lake Superior.
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