It's Surprisingly Easy to Hurls Rocks From Mars Into Space By Nancy_A
Under high pressures, such as an asteroid impact, plagioclase transforms into the glassy material known as maskelynite. According to the researchers, finding maskelynite in a rock indicates the types of pressure the sample came into contact with.
Liu and Caltech professor Paul Asimow said that previous experiments had shown that plagioclase turns into maskelynite at a shock pressure of 30 gigapascals , which is 300,000 times the atmospheric pressure experienced at sea level, or 1,000 times the pressure a submersible comes into contact with while diving beneath 3 kilometers of ocean water.
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