A meteorite that crashed to Earth more than 5 million years ago has now been traced to a specific crater on Mars where it was ejected by an asteroid impact
that crashed to Earth more than 5 million years ago has now been traced to a specific crater on Mars where it was ejected by an asteroid impact. The information gives geologists more context about the unusual rock that will provide clues to the history of the Red Planet.
The 320-gram meteorite was discovered in the Sahara desert in 2011 and named Northwest Africa 7034. It is the only known Mars meteorite made of breccia, a type of sedimentary rock consisting of broken fragments of rock cemented together by fine material. at Curtin University in Perth, Australia, and his colleagues analysed thousands of high-resolution images of Mars, using a supercomputer and AI software to identify and list around 90 million impact craters.They scoured this list for candidates that matched the unique properties of NWA 7034: it has one of the highest concentrations of potassium and thorium ever measured in a Martian meteorite and is also one of the most magnetised.
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