WebEarthquakes 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 Great Lakes tectonic zone (GLTZ) is bounded by South Dakota at its tip and heads northeast to south of Duluth, Minnesota, then heads east through northern Wisconsin, Marquette, Michigan, and then trends more northeasterly to skim the northernmost shores of lakes. Algoman orogeny … See more During the Late Archean Eon the Algoman orogeny – which occurred about 2,750 million years ago – added landmass through volcanic activity and continental collision along a boundary that stretches from present-day … See more Recent geologic mapping in the Marquette, Michigan, U.S., area provides information of the structure for the zone along a 10 km (6.2 mi) strike. The … See more General information An episode of hotspot gabbro magmatism occurred 2,480 million years ago at the eastern edge of the … See more 1. 2. ^ The distance measurements in the Wyoming province section are derived by the original author of this article with the use of three resources: 1.Geological Guidebook to the Paleoproterozoic East Bull Lake Intrusive Suite Plutons at East Bull Lake, Agnew … See more Collision The collision of the gneissic Minnesota River Valley (MRV) subprovince onto the southern edge of … See more Early Archean rocks generally form elongate, domal or circular bodies that are several kilometers thick. Late-stage dikes and sills of diabase, quartz-feldspar fine-grained instrusive … See more Minnesota has been the most seismically active in the region of Minnesota, Wisconsin, Michigan's Upper Peninsula and southern … See more
Rift Valley - National Geographic Society
WebFrom Simple English Wikipedia, the free encyclopedia Distribution of the African Great Lakes: the left-hand branch is the Western Rift Valley, and the right-hand branch is the Eastern Rift Valley, which extends further … It has been estimated that the foundational geology that created the conditions shaping the present day upper Great Lakes was laid from 1.1 to 1.2 billion years ago, when two previously fused tectonic plates split apart and created the Midcontinent Rift, which crossed the Great Lakes Tectonic Zone. A valley was formed providing a basin that eventually became modern day Lake Superior. … floor sheets nfp-ss400
11 Biggest Fault Lines in the World - Insider Monkey
WebJul 21, 2015 · At a length of 1400km the Great Lakes Tectonic Zone is found from South Dakota all the way to the southern area of Minnesota. This then extends to Michigan and then to Ontario, Canada. The... WebFeb 24, 2015 · The key aspect of plate tectonics is that Earth’s outer shell consists of continent- and ocean-sized moving plates of relatively cold, strong rock, about 60 miles (100 km) thick, that move relative to one … WebRift zone: Reigolil-Pirihueico Fault: Andes: Rhine Rift Valley: Germany and France: Rift zone: Active: 1356 Basel (M6 to 7) Rio Grande Rift: Rio Grande Valley, United States and Mexico: Rift zone: Romeral Fault System: 700: Colombia: Thrust and strike-slip: Active: 1983 (M5.5), 1999 (M6.2) Sagami Trough: 340: Off the coast of Honshū ... floor sheeting calculator