magmatic, basaltic, pyroclastic, hydrothermal, eruptive, tectonic, volcanic rock, igneous, orogenic, phreatic, volcanic eruption, dacitic, silicic, volcanic crater, geologic, granitic, sedimentary, crustal, extrusive, rhyolitic, mt etna, syrtis major, circumstellar, lateritic, pillow lava, geological, dacite, anorthosite, phyllosilicate, andesite, sedimentary rock, erosional, metamorphic rock, lapilli, crustal plate, depositional, palaeo, subglacial, porphyritic, igneous rock, alkalic, mineralizing, dunite, plutonic, amphibolite, evaporite, loess, pegmatitic, equatorial, calcic, jovian, plate tectonics, haematite, cumulus cloud, chemosynthetic, glacial, mount asama, compressional, hornblende, peridotite, biogeochemical, carbonaceous, metalliferous, hadean, clastic, fragmental, mount etna, coeval, oceanic, chloritic, phanerozoic, siliceous, geodynamic, convective, subducting, lassen peak, pyroxene, glacier, neogene, graphitic, chalcedonic, basinal, planetesimal, abyssal, ordovician, cenozoic, hematitic, arcuate, lacustrine, palaeozoic, silicate, hot springs, pelitic, albite, nebular, auriferous, metasomatic, fluvial, eclogite, sulfuric, rubbly, overlying, volcanics, lavas, volcanism, deltas, intrusives, plutons, central, dikes, ones, uplifts, floras, glaciers, outcrops, basalts, basins, craters, deposits, trachytic, andesitic, gneissic, pumiceous, alluvial, argillaceous, colluvial, deltaic, dolomitic

activity, andesite, argyroxiphium sandwicense, atomic number 16, bali, bentonite, cristobalite, dacite, dominica, earthquake, eruption, faeroes, faeroe islands, faroes, faroe islands, fijis, fiji islands, guyot, hawaii, hawaiian islands, hawaii island, iceland, iles marquises, ischia, krakatao, krakatau, krakatoa, ladrone islands, lahar, lassen volcanic national park, maar, madeira islands, marianas, mariana islands, marquesas islands, mindanao, montserrat, mount shasta, new hebrides, plinian eruption, pompeii, quake, raising, republic of vanuatu, rhyolite, saint lucia, samoa, samoan islands, sandwich islands, seism, shasta, silversword, st. lucia, sulfur, sulphur, temblor, triassic, triassic period, truncated, tufa, tuff, vanuatu, vanua levu, viti levu, volcanic eruption, volcanism, volcano

eruptive, extrusive