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The Sudbury Basin (/ ˈ s ʌ d b ə r i /), also known as Sudbury Structure or the Sudbury Nickel Irruptive, is a major geological structure in Ontario, Canada. It is the third-largest known impact structure on Earth , as well as one of the oldest. [ 1 ]
It is located near the much larger Sudbury meteorite crater but they are not related. Lake Wanapitei seen from space, upper right of the image. The crater is 5.2 mi (8.4 km) in diameter and the age is estimated to be 37.2 ± 1.2 million years, placing it in the Eocene. [1] It was evident by the mid-1970s that Wanapitei Lake was an impact crater.
Sudbury, officially the City of Greater Sudbury, is the largest city in Northern Ontario by population, with a population of 166,004 at the 2021 Canadian Census. [4] By land area, it is the largest in Ontario and the fifth largest in Canada.
Sudbury Basin is the third-largest crater on Earth, after the 300 km (190 mi) Vredefort impact structure in South Africa, and the 150 km (93 mi) Chicxulub crater under Yucatán, Mexico. [10] The Sudbury Igneous Complex is an impact melt that formed from this impact and the high pressures and temperatures melted the surrounding rock. [11]
Greater Sudbury (Ontario, Canada) is considered a city of lakes containing 330 lakes, and the largest lake contained within a city, Lake Wanapitei with 13,257 hectares. [1] The lakes drain into two main watersheds: to the east is the French River watershed which flows into Lake Huron via Georgian Bay , and to the west is the Spanish River ...
Ramsey Lake (French: Lac Ramsey) is a lake in Sudbury, Ontario, located near the city's downtown core. Until 2001, Ramsey Lake was listed by the Guinness Book of World Records as the world's largest lake located entirely within the boundaries of a single city, [citation needed] but when the Regional Municipality of Sudbury was amalgamated into the current city of Greater Sudbury, Ramsey Lake ...
The largest, and best known, is Sudbury, Ontario. Sudbury is an exception to the normal process of forming minerals in the Shield since there is significant evidence that the Sudbury Basin is an ancient meteorite impact crater. The nearby, but less known Temagami Magnetic Anomaly has striking similarities
Charity Shoal crater; H. Holleford crater; S. Slate Islands (Ontario) Sudbury Basin; W. Lake Wanapitei This page was last edited on 27 September 2019, at 11:23 ...