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MOLDAVITE: AN EXTRATERRESTRIAL GEMMoldavite [SiO2 + Al,Ca,Fe,K,Na] is a naturally occurring glass wi

Link #moldavite #mineral #crystal #tektite #geology #bolide #asteroid #impact #ries crater #strewnfield #science #glass #the earth story

New timing data for the K-Pg boundary event.Teams from the Berkeley Geochronology Center (BGC), the

Link #science #geology #impact #crater #tektite #cretaceous #paleogene #tertiary #volcano #chicxulub #argon #potassium #the earth story