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GE
marble, crust, mid-oceanic ridge, soil, glacier, succession, intrusion, rhyolite, plate tectonics, mineral resources, basalt, era, andesite, petroleum, biosphere, subduction, foliated, eruptions, sandstone, extrusive rocks, benioff zone, deformation, mantle, biotte schist, shale, unconsolidate, plate boundaries, geologic time scale, environmental geology, rock, island arc, palaeontology