Andesite magmas were once thought to be simple melts derived from a subducting oceanic slab or the mantle. Analysis of lavas at Mount Hood shows that instead andesites are a complex mixture of magmas ...
Field image of the achondrite meteorite GRA 06128, found in blue ice of the Graves Nunatak region of the Antarctica during the ANSMET 2006/2007 field-season. Image courtesy of the Antarctic Search for ...
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