0
GE
gravel, hydrogeology, biosphere, rift zone, economic geology, sandstone, convergent plate boundaries, continental crust, marble, magmatic arc, shale, petrology, rhyolite, divergent plate boundaries, fault, subduction, subduction, continental rifting, obsidian, ocean basins, solidification, hydrosphere, soil, succession, mineral resources, faulting, plate boundaries, rudy, stratigraphy, limestone, period, magma