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Meteor Crater

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Google Maps stumble reveals 390-million-year-old meteor crater in Quebec
science19 hours ago

Google Maps stumble reveals 390-million-year-old meteor crater in Quebec

An amateur using Google Maps spotted a pit in Quebec’s Côte-Nord that turned out to be a 390-million-year-old meteor crater named Uhackatik, about 25 km across. A four-person team confirmed the site in 2025 after a rugged field expedition, finding impact melt rock and shatter cones as evidence. The discovery ranks among the larger craters identified in recent years and will be presented at the Meteoritical Society congress in Germany.

via CBC|
#google-maps#impact-melt-rock#meteor-crater
Arizona's Meteor Crater: A 50,000-Year Window into Earth's Impact History
science4 months ago

Arizona's Meteor Crater: A 50,000-Year Window into Earth's Impact History

A 50,000-year-old meteor impact crater near Winslow, Arizona — Meteor Crater — remains the best-preserved terrestrial impact site, serving as a natural laboratory for shock metamorphism and the effects of hypervelocity impacts. Its 4,000-foot diameter and 700-foot depth offer crucial data on Earth's impact history and inform comparisons to planetary surfaces and past biosphere changes, including mass extinction scenarios like the dinosaur wipeout.

via The Daily Galaxy|
#arizona#geology#impact-cratering
Meteor Crater still yields space secrets after 50,000 years
space4 months ago

Meteor Crater still yields space secrets after 50,000 years

Arizona’s Meteor Crater, formed about 50,000 years ago, remains the best-preserved Earth impact site and a living laboratory for studying impact processes. Ongoing fieldwork, lab analyses, and computer studies—supported by Barringer Family Fund grants—continue to produce new data, with researchers like Dan Durda saying the crater provides new insights every year and climate and geological processes can obscure other craters elsewhere.

via Space|
#barringer-crater#geology#impact-craters
"Enormous Hidden Meteor Crater Discovered in Australia"
science2 years ago

"Enormous Hidden Meteor Crater Discovered in Australia"

Experts believe that the largest meteor crater on Earth, spanning up to 520km in diameter, is hidden deep beneath the town of Deniliquin in New South Wales, Australia. This crater, believed to be caused by a meteor twice as powerful as the one that wiped out the dinosaurs, is linked to the Late Ordovician extinction event that occurred between 445.2 and 443.8 million years ago. The crater has yet to be tested by drilling, but its existence is supported by geophysical data and magnetic patterns. Further research and drilling are needed to determine the exact age and gather physical evidence of the impact.

via Daily Mail|
#deniliquin#extinction-event#impact-structure