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GE
biotte schist, earthquakes, seismology, magma, porphyry, eruptions, plate tectonics, deformation, economic geology, foliated, lithification, geologic time scale, extrusive rocks, metamorphic rocks, atmosphere, era, fold, rudy, granite, plate boundaries, fertilizers, subduction, rhyolite, island arc, oceanic trenches, benioff zone, limestone, gneiss, solidification, glacier, oceanic crust, sedimentology