Post by 1dave on May 21, 2022 15:01:45 GMT -5
www.sciencetimes.com/articles/36499/20220308/long-lost-asteroid-impact-left-more-than-30-craters-in-wyoming.htm
Long-Lost Asteroid Impact Left More Than 30 Craters in Wyoming
Tiffany Winfrey Mar 08, 2022 11:59 PM EST
Geologists investigating the state of Wyoming in the United States had uncovered a new sort of meteorite crater, the consequence of a massive impact millions of years before dinosaurs roamed the Earth.
According to research published in the Geological Society of America Bulletin, scientists have discovered secondary impact craters concentrated in a landscape unlike anything else observed on Earth.
The findings of "Secondary cratering on Earth: The Wyoming impact crater field" suggest that there may be a considerably larger impact crater in the area that has yet to be identified.
XSP: NASA/ESA Hubble Space Telescope's Advanced Camera Images
(Photo: NASA/ESA via Getty Images)
IN SAPCE, JULY 23: This handout image from ESA/NASA, obtained August 21, 2008, taken by the High Resolution Stereo Camera on board the ESA?s Mars Express shows the highest-resolution full-disc image yet of the surface of the moon Phobos. The image data was acquired from a distance of 97 km with a spatial resolution of about 3.7 m/pixel in orbit 5851. These images have surpassed all previous images from other missions in continuous coverage of the illuminated surface at the highest spatial resolution of 3.7 m/pixel.
Researchers Find Triangular-Formed Craters in Wyoming
Researchers compared the Wyoming craters to structures seen elsewhere in the solar system, not Earth.
Planets and moons with thinner atmospheres than Earth, such as Mars, Mercury, and Ganymede, a moon circling the distant gas giant Jupiter, were among them.
Researchers told Newsweek that their work had uncovered a large number of craters-31 in total-in what they have called the Wyoming Crater Field, while more than 60 other structures that could be other impact craters await confirmation.
The craters were discovered in a triangle formed by the cities of Laramie, Douglas, and Casper.
ALSO READ: China's New Meteor Impact Crater 'Yilan' Might Be the Largest to Date
The investigation included images of the bizarre, stretched architecture of the craters, which looked like close-ups of the moon or Mars.
Only 208 impact craters have been detected on Earth, which scientists attribute to erosion, burial, and other geological processes, as well as the huge amount of water that covers the planet's surface.
Secondary impact craters are distinguished by their shallower depths and non-circular forms, as well as the ray-like patterns that can emerge from a primary crater, as seen in the Moon's Tycho crater.
Crater 'Completely Buried' in Denver Basin
Further investigation obtained by Space.com shows that some of the craters are grouped in tiny regions. Meanwhile, others are elliptical rather than circular, suggesting that the features have a distinct genesis narrative.
The craters also appear to be "aligned" in ray-like patterns, implying that they are all secondary craters generated by material hurled out around a core, the main crater created by the original impact.
Finding the source crater, on the other hand, will be challenging. The team's findings indicate that the crater is "completely buried" in sediments along the Wyoming-Nebraska boundary in the Denver Basin.
According to the researchers' estimations, all secondary craters were caused by about house-sized chunks of bedrock, measuring between 13 feet and 26 feet (4 m to 8 m) across. According to them, the initial impactor might have been more than 1.2 miles (2 kilometers) broad.
pubs.geoscienceworld.org/gsa/gsabulletin/article/doi/10.1130/B36196.1/611743/Secondary-cratering-on-Earth-The-Wyoming-impact
Long-Lost Asteroid Impact Left More Than 30 Craters in Wyoming
Tiffany Winfrey Mar 08, 2022 11:59 PM EST
Geologists investigating the state of Wyoming in the United States had uncovered a new sort of meteorite crater, the consequence of a massive impact millions of years before dinosaurs roamed the Earth.
According to research published in the Geological Society of America Bulletin, scientists have discovered secondary impact craters concentrated in a landscape unlike anything else observed on Earth.
The findings of "Secondary cratering on Earth: The Wyoming impact crater field" suggest that there may be a considerably larger impact crater in the area that has yet to be identified.
XSP: NASA/ESA Hubble Space Telescope's Advanced Camera Images
(Photo: NASA/ESA via Getty Images)
IN SAPCE, JULY 23: This handout image from ESA/NASA, obtained August 21, 2008, taken by the High Resolution Stereo Camera on board the ESA?s Mars Express shows the highest-resolution full-disc image yet of the surface of the moon Phobos. The image data was acquired from a distance of 97 km with a spatial resolution of about 3.7 m/pixel in orbit 5851. These images have surpassed all previous images from other missions in continuous coverage of the illuminated surface at the highest spatial resolution of 3.7 m/pixel.
Researchers Find Triangular-Formed Craters in Wyoming
Researchers compared the Wyoming craters to structures seen elsewhere in the solar system, not Earth.
Planets and moons with thinner atmospheres than Earth, such as Mars, Mercury, and Ganymede, a moon circling the distant gas giant Jupiter, were among them.
Researchers told Newsweek that their work had uncovered a large number of craters-31 in total-in what they have called the Wyoming Crater Field, while more than 60 other structures that could be other impact craters await confirmation.
The craters were discovered in a triangle formed by the cities of Laramie, Douglas, and Casper.
ALSO READ: China's New Meteor Impact Crater 'Yilan' Might Be the Largest to Date
The investigation included images of the bizarre, stretched architecture of the craters, which looked like close-ups of the moon or Mars.
Only 208 impact craters have been detected on Earth, which scientists attribute to erosion, burial, and other geological processes, as well as the huge amount of water that covers the planet's surface.
Secondary impact craters are distinguished by their shallower depths and non-circular forms, as well as the ray-like patterns that can emerge from a primary crater, as seen in the Moon's Tycho crater.
Crater 'Completely Buried' in Denver Basin
Further investigation obtained by Space.com shows that some of the craters are grouped in tiny regions. Meanwhile, others are elliptical rather than circular, suggesting that the features have a distinct genesis narrative.
The craters also appear to be "aligned" in ray-like patterns, implying that they are all secondary craters generated by material hurled out around a core, the main crater created by the original impact.
Finding the source crater, on the other hand, will be challenging. The team's findings indicate that the crater is "completely buried" in sediments along the Wyoming-Nebraska boundary in the Denver Basin.
According to the researchers' estimations, all secondary craters were caused by about house-sized chunks of bedrock, measuring between 13 feet and 26 feet (4 m to 8 m) across. According to them, the initial impactor might have been more than 1.2 miles (2 kilometers) broad.
pubs.geoscienceworld.org/gsa/gsabulletin/article/doi/10.1130/B36196.1/611743/Secondary-cratering-on-Earth-The-Wyoming-impact
