The Sudbury Basin ( / ˈsʌdbəri / ), 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 crater or astrobleme on Earth, as well as one of the oldest. [1] The crater was formed 1.849 billion years ago in the Paleoproterozoic era. [2] The Operational Land Imager (OLI) on Landsat 8 acquired this image of Sudbury Basin in southeastern Ontario on September 11, 2020. Notice the many mines located around the basin, particularly along the rim.
The mystery of the Sudbury Basin solved The second largest crater on
Space & Physics Editor's Note: This story was updated at 1:55 p.m. E.T. The origins of a massive 1.8 billion-year-old crater in Canada has been revealed The Sudbury Basin, which is the. SUDBURY IMPACT STRUCTURE by: Charles O'Dale Type: Multi ring? Age (ma): 1849.53 ± 0.21 and 1849.11 ± 0.19 a - PROTEROZOIC Diameter: 250 km (estimated) Location: Ontario, Canada. N 46° 36′ W 81° 11′ Shock Metamorphism : shatter cones (up to 3 m in length); PDF in quartz, feldspar and zircon grains; Space Astronomy Comets A Comet Did It! Mystery of Giant Crater Solved News By Tia Ghose published 18 November 2014 The Sudbury Basin, the world's second-largest impact crater, as seen from. (Jenifer Norwell/CBC) It's been long believed the Sudbury Basin was shaped by an asteroid that hit the region more than a billion years ago, but a Laurentian University researcher now says it.
SUDBURY IMPACT STRUCTURE Crater Explorer
acquired December 2000 This region of Canada owes its unique geology to that powerful collision—initially thought to be an asteroid and later interpreted as a comet. The collision punctured Earth's crust, allowing material from the mantle to well up from below and fill the basin with melted rock. The city of Sudbury is located to the south-east of the SIC. Formation of the original crater The Sudbury Structure is situated within a unique Geotectonic setting in northeastern Ontario, being sandwiched between: the Archean-age (>2.5 billion-year-old) Superior Geologic or Structural Province, situated to west and north of the structure, and; SHATTERCONES This 18 cm shattercone was found just outside of the Sudbury Igneous Complex (SIC). The discovery of shatter cones confirmed that a large meteorite impact caused the formation of the Sudbury Igneous Complex (Gibson, Spray 1998). After 1.85 Billion years the striations on the shatter cone illustrated above are still recognizable. Within Canada is the 2nd largest impact crater on the planet. I am not referring to the 100 kilometer wide Manicouagan Reservoir Crater, but instead somethin.
7 Largest Craters in the World Travel Trivia
The Sudbury Basin ( / ˈsʌdbəri / ), 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 crater or astrobleme on Earth, as well as one of the oldest. The crater was formed 1.849 billion years ago in the Paleoproterozoic era. 98 Accesses 12 Citations Part of the Earth Evolution Sciences book series (EES) Abstract The Sudbury impact structure is characterized by ring fractures in the footwall rocks, by an overturned crater collar and by shock metamorphosed and brecciated footwall rocks.
The Onaping formation of the Sudbury structure (Canada): an example of allochthonous impact breccias (extended abstract). Tectonophysics, v. 216, pp. 227-234. 1992. Avermann, M. E., Sudbury project (University fo Munster-Ontario Geological Survey): (6) Origin of the polymict, allochthonous breccias of the Onaping formation (abstract). The present-day remnant of the Sudbury Meteorite Crater is composed by a surrounding brecciated footwall rocks of both the Superior and southern Structural Geologic Provinces extending up to 100 km away from the position of the Sudbury Igneous Complex (SIC), the SIC itself and rocks of the Whitewater Group (melt breccia, suevite, and reworked suevite) in the Sudbury Basin within the SIC.
Clues to origins of life may be found in Sudbury, Ont. crater Sudbury
Definition The Sudbury impact structure, Canada, represents the eroded remains of an impact basin originally 150-200 km in diameter which formed ~1.85 Ga ago. It contains world-class ore deposits, associated with the Sudbury Igneous Complex, which represents the differentiated original impact melt sheet. The Sudbury structure is a large (D ~200 km, 1850 Ma), deformed and eroded impact crater, whose central region was occupied by melt. An eight-year multidisciplinary study by Stoffler et al. (1994) concluded that the impact excavated deep into the crust, almost to the mantle (~30 km), before collapse and rebound.
