Sudbury Basin - Onaping River
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Skyecat
N 46° 35.352 W 081° 22.858
17T E 470815 N 5159585
The Sudbury Basin, also known as Sudbury Structure is a major geologic structure in Ontario, Canada. It is the second-largest known impact crater or astrobleme on Earth, as well as one of the oldest.
Waymark Code: WMEGAY
Location: Ontario, Canada
Date Posted: 05/26/2012
Views: 12
The Sudbury basin formed as an impact from a bolide approximately 10–15 km (6.2–9.3 mi) in diameter that occurred 1.849 billion years ago[2] in the Paleoproterozoic era.
Image taken from Space Shuttle Challenger in 1984/1985
Debris from the impact was scattered over an area of 1,600,000 km2 (620,000 sq mi) and traveled over 800 km (500 mi) away — rock fragments ejected by the impact have been found as far as Minnesota.[3]
Models suggest that for such a large impact, debris was most likely scattered globally,[4] but has since been eroded away. Its present size is believed to be a smaller portion of a 250 km (160 mi) round crater that the bolide originally created.
Subsequent geological processes have deformed the crater into the current smaller oval shape. Sudbury Basin would then be the second-largest crater on Earth, after the 300 km (190 mi) Vredefort crater in South Africa, and larger than the 170 km (110 mi) Chicxulub crater in Yucatán, Mexico.
Type of Crater: Complex
Crater Diameter: 10-15 km in diameter
Age of Crater: 1,890,000,000.00
View from the Coordinates:
View of High Falls on the Onaping River, at the northern rim of the ancient crater
Crater Web Page: Not listed
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