tephra Definition

ash, sinter, cinder, tuff, pyroclastic, lapilli, basalt, volcanic rock, volcanic crater, igneous rock, ejecta, scoria, metamorphic rock, stratovolcano, pillow lava, loess, volcanism, sedimentary rock, caldera, sedimentary, clastic, depositional, outwash, pumice, mudstone, magmas, esker, lavas, dolerite, evaporite, phyllosilicate, massifs, syrtis major, anhydrite, hornblende, stromatolite, moulins, mylonite, snowcap, claystone, sediments, jarosite, halite, stalactite, cumulus cloud, illite, anticlines, phyllite, goethite, anorthosite, eclogite, tropopause, dolomites, chrysocolla, orogenic, amundsen sea, calcite, landforms, lithosphere, dunite, hummocks, tarns, lassen peak, plagioclase, greywacke, concretions, neogene, conodonts, asthenosphere, palaeo, glaciers, crustal, olivine, tufa, kaolinite, compressional, tremolite, terrane, microfossil, silty, diabase, argillaceous, talus, rifting, volcanoes, silicates, alpine glacier, amphibolite, biogeochemical, chondrules, norite, palaeozoic, peridotite, aeolian, schists, enargite, monzonite, muscovite, alkalic, airglow,