The Sudbury Basin, which is the world's second-largest impact crater, … This feature (and the similar-sized crater to its left) is overprinted by many other craters, meaning it is an extremely old feature that has collected other impacts over the eons. In comparison, it is about 10% older than the Sudbury … The Sudbury Basin, also known as Sudbury Structure or the Sudbury Nickel Irruptive, is a major geological structure in Ontario, Canada. Anderson (2011) Sudbury impact layer in the western Lake Superior region. Il cratere è noto anche con altri due nomi, Sudbury Structure e Sudbury Nickel Irruptive. The city has eight urban areas, including the old city of Sudbury, Azilda and Capreol. Sudbury is home to a major geological structure in Ontario, Canada called the Sudbury Basin which is the third-largest crater on Earth, as well as one of the oldest. Geology, v. 33, p. 193-196, doi:10.1130/G21048.1. [17], The area was later examined by Alexander Murray of the Geological Survey of Canada,[17] who confirmed "the presence of an immense mass of magnetic trap". A massive 50-meter-deep crater was accidentally discovered by a Russian film crew earlier this summer while flying over the Yamal Peninsula. Accordingly, the region primarily supplies products for consumption within Northern Ontario, and is not a major food exporter. [citation needed], Because considerable erosion has occurred since the Sudbury event, an estimated 6 km (3.7 mi) in the North Range, it is difficult to directly constrain the actual size of the diameter of the original transient cavity, or the final rim diameter.[6]. Event date: July 25-26th 2020. All I can find Reports published in the late 1960s described geological features that were said to be distinctive of meteorite impact, including shatter cones[9] and shock-deformed quartz crystals in the underlying rock. Petrological, geochemical, and structural evidence supports genesis of the Sudbury Structure by a meteorite impact. Physical features Size - 32 km wide ( 104,986..877 feet), 15 km deep (49,212.5984 feet) Unfair and outdated reputation as an environmental wasteland Lots of tourism with bilingual tours LOCATION Age and Impact This crater Sudbury Impact Crater är en nedslagskrater i Kanada. [16], In 1856 while surveying a baseline westward from Lake Nipissing, provincial land surveyor Albert Salter located magnetic abnormalities in the area that were strongly suggestive of mineral deposits. It is the second-largest verified impact crater on Earth, as well as one of the oldest. GeoNames. Debris from the impact was scattered over an area of 1,600,000 km2 (620,000 sq mi) thrown more than 800 km (500 mi); rock fragments ejected by the impact have been found as far away as Minnesota.[4]. The former municipalities of … Conquer the Crater will be held at Kivi Park on Aug. 2-4. 1, p. 20-21. Considered to be one of the best-preserved “wet-target” impact craters in the world, the Chesapeake Bay Crater is … La città di Greater Sudbury… The deformation of the Sudbury structure occurred in five main deformation events (by age in Mega years): Some 1.8 billion years of weathering and deformation made it difficult to prove that a meteorite was the cause of the Sudbury geological structures. • Original crater altered by subsequent geologic processes [18], Third largest verified astrobleme on earth, remains of an Paleoproterozoic Era impact. From between 1 and 10 million years ago, and with a diameter of 5 km or more. Models suggest that for such a large impact, debris was most likely scattered globally,[5] but has since been eroded away. Den ligger i countyt Sudbury och provinsen Ontario, i den sydöstra delen av landet, 400 km väster om huvudstaden Ottawa.Toppen på Sudbury Impact Crater är 322 meter över havet, [b] eller 21 meter över den omgivande terrängen [c]. The basin is located on the Canadian Shield in the city of Greater Sudbury, Ontario. In the following decade, the population doubled again. The Sudbury Basin was formed about 1.85 billion years ago when a comet slammed into Earth, leaving an astronomical wealth of mineralogical and geological information for modern-day scientists to discover and examine. [2] Den är den tredje största kända nedslagskratern på jorden. [citation needed], NASA used the site to train the Apollo astronauts in recognizing rocks formed as the result of a very large impact, such as breccias. Location: Kivi Park, Sudbury Ontario, Canada. A further difficulty in proving that the Sudbury complex was formed by meteorite impact rather than by ordinary igneous processes was that the region was volcanically active at around the same time as the impact, and some weathered volcanic structures can look like meteorite collision structures. The analogy between the Sudbury Structure and lunar maria, though petrologically wrong, is valid to the extent that both classes of structure were initially formed by impact. Mystery of Giant Crater Solved", "Mineralogy of Cu-Ni-PGE ore and Sequence of Events in the Copper Cliff South Mine, Sudbury, Ontario", Fallbrook Gem and Mineral Society – Sudbury Structure page, Aerial Exploration of the Sudbury Impact Structure, https://en.wikipedia.org/w/index.php?title=Sudbury_Basin&oldid=1004226367, Short description is different from Wikidata, Articles with unsourced statements from January 2021, Articles with unsourced statements from February 2019, Creative Commons Attribution-ShareAlike License, This page was last edited on 1 February 2021, at 16:54. Geology, v. 35, p. 827-830. References for the entire Sudbury Impact Layer tour: http://www.passc.net/EarthImpactDatabase/index.html. & Giblin, P.E. The Sudbury Igneous Complex (SIC) represents the ponded melt sheet. [11][12], The Sudbury Basin is located near a number of other geological structures, including the Temagami Magnetic Anomaly, the Lake Wanapitei impact crater, the western end of the Ottawa-Bonnechere Graben, the Grenville Front Tectonic Zone and the eastern end of the Great Lakes Tectonic Zone, although none of the structures are directly related to each other in the sense of resulting from the same geological processes. Kring (2010) The Sudbury impact layer in the Paleoproterozoic iron ranges of northern Michigan, USA. Fralick, and A.L. Jirsa M.A, P.W. The SIC is believed to be a stratified impact melt sheet composed from the base up of sub layer norite, mafic norite, felsic norite, quartz gabbro, and granophyre. But these figures will soon change, because it is growing quickly. Lake Wanapitei, at the northeastern edge of the Sudbury Basin, fills another impact crater with a diameter of 8 km, and a age of 37 million yeras. (2010) Stratigraphy of Sudbury "impactite" near Gunflint Lake, NE Minnesota. Institute of Lake Superior Geology, 56th Annual Meeting Proceedings, v. 56, pt. Notable geologist instructors included William R. XTERRA Conquer the Crater, presented by Adventure 365, is about two weeks away and it’s growing into an event for the whole family. Age of Sudbury How big is the Sudbury? Schulz, J.W. The Sudbury Basin is a major geologic structure in Ontario, Canada. ago. A recent paper published by a group of geochemists at Trinity College in Ireland suggests that comet strikes could have created oases that allowed life … Geological Society of America Field Guide 24. [citation needed], Due to the high mineral content of its soil, the floor of the basin is among the best agricultural land in Northern Ontario, with numerous vegetable, berry, and dairy farms located in the valley. The Vredefort crater's age is about two billion (10 9) years ago, which puts it in the Palaeoproterozoic era. The Sudbury crater is 39 miles long and 19 miles wide - and 9.3 miles deep. However, the size and shape of the original crater and the degree to which the Sudbury Intrusive Complex and its ore deposits are impact‐generated are still open to debate. However, because of its northern latitude, it is not as productive as agricultural lands in the southern portion of the province. [citation needed], The large impact crater filled with magma containing nickel, copper, palladium, gold, the platinum group and other metals. The Sudbury Basin is referred to locally as "The Valley". Locally known as the City of Lakes, Greater Sudbury contains 330 lakes, more than any other municipality in Canada. Retrieved from " https://commons.wikimedia.org/w/index. Astronauts who would use this training on the Moon included Apollo 15's David Scott and James Irwin, Apollo 16's John Young and Charlie Duke, and Apollo 17's Gene Cernan and Jack Schmitt. It is the third-largest known impact crater or astrobleme on Earth, as well as one of the oldest. [citation needed], The main units characterizing the Sudbury Structure can be subdivided into three groups: the Sudbury Igneous Complex (SIC), the Whitewater Group, and footwall brecciated country rocks that include offset dikes and the Sub layer. Nahimutang ni sa kondado sa Sudbury ug lalawigan sa Ontario, sa habagatan-sidlakang bahin sa nasod, 400 km sa kasadpan sa Ottawa ang ulohan sa nasod. About 79% of the total population of Sudbury live within these urban centers. Geologists reached consensus by about 1970 that the Sudbury basin was formed by a meteorite impact[citation needed].