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Jeerinah-layer.jpg

Jeerinah (JSL) spherule layer Courtesy Bruce Simonson, Oberlin College and Conservatory The millimeter-scale circles and more irregular gray particles in both samples are formerly molten droplets ejected into space when an asteroid hit the early Earth. The image at left is from the Monteville layer in South Africa whereas the image at right
Courtesy Bruce Simonson, Oberlin College and Conservatory