This is a crossed polarized light photomicrograph of an impact spherule; a small mineralisation made when a meteorite hits the Earth and melts the rock at the point of impact, from Barberton Greenstone Belt, in South Africa. These spherules are the only remnants of Early Earth’s meteorite impact history, from between of 3.2 and 3.5 billion years ago. In this photo you can see the K-feldspar ...[Read More]
Imaggeo On Monday: Emoji from meteorites; impact spherule
Emoji from meteorites; impact spherule. Credit: Seda Özdemir (distributed via imaggeo.egu.eu)