A Quebec amateur astronomer was scouting a campsite using satellite imagery in 2024 when he spotted a 25-kilometre ring around Lake Marsal, and geologists who reached it by floatplane the following year found shatter cones confirming a roughly 390-milli - spacedaily.com
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A Quebec amateur astronomer was scouting a campsite using satellite imagery in 2024 when he spotted a 25-kilometre ring around Lake Marsal, and geologists who reached it by floatplane the following year found shatter cones confirming a roughly 390-milli spacedaily.com A strange circle on satellite maps turned out to be a 390-million-year-old impact crater ScienceDaily Huge impact crater in Quebec went unnoticed for 390 million years Earth.com
A Quebec amateur astronomer was scouting a campsite using satellite imagery in 2024 when he spotted a 25-kilometre ring around Lake Marsal, and geologists who reached it by floatplane the following year found shatter cones confirming a roughly 390-milli spacedaily.com A strange circle on satellite maps turned out to be a 390-million-year-old impact crater ScienceDaily Huge impact crater in Quebec went unnoticed for 390 million years Earth.com