Kind of volcanic rock
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AnswerCrossword Clue
TRASSKind of volcanic rock.
BASALTICType of volcanic rock
BASALTICOf a dark, volcanic rock
andesiticof or like andesite, a fine-grained volcanic rock
phonolitesA fine-grained volcanic rock composed of alkali feldspars and nepheline
phonoliteA fine-grained volcanic rock composed of alkali feldspars and nepheline
eutaxiticof or like eutaxite, a volcanic rock with a banded structure
trachytesA gray fine-grained volcanic rock consisting largely of alkali feldspar
rhyolitefine-grained igneous rock rich in silica: the volcanic equivalent of granite
rhyolitesA pale fine-grained volcanic rock of granitic composition, typically porphyritic in texture
tomoa shaft formed by the action of water on limestone or volcanic rock
aaa volcanic rock consisting of angular blocks of lava with a very rough surface
selvedgesA zone of altered rock, esp. volcanic glass, at the edge of a rock mass
aasAA, a volcanic rock consisting of angular blocks of lava with a very rough surface
selvagesA zone of altered rock, esp. volcanic glass, at the edge of a rock mass
limburgitea volcanic rock composed of olivine and augite in a fine-grained or glassy groundmass
limburgitesLIMBURGITE, a volcanic rock composed of olivine and augite in a fine-grained or glassy groundmass
pyroclasticof rocks, formed of fragments thrown out by volcanic action / a rock formed in this way
ignimbritea hard rock formed by fusion of the volcanic fragments and dust of a nuee ardente
ignimbritesIGNIMBRITE, a hard rock formed by fusion of the volcanic fragments and dust of a nuee ardente
ignimbriteA volcanic rock consisting essentially of pumice fragments, formed by the consolidation of material deposited by pyroclastic flows
plagioclasea fine-grained volcanic rock of intermediate composition, consisting largely of plagioclase and one or more mafic minerals
tufffragmental rock consisting of the smaller kinds of volcanic detritus, as ash or cinder, usually more or less stratified
andesiticdark-colored volcanic rock composed essentially of plagioclase feldspar and one or more mafic minerals, as hornblende or biotite
plagioclasesPLAGIOCLASE, a fine-grained volcanic rock of intermediate composition, consisting largely of plagioclase and one or more mafic minerals
andesitesdark-colored volcanic rock composed essentially of plagioclase feldspar and one or more mafic minerals, as hornblende or biotite
tuffsfragmental rock consisting of the smaller kinds of volcanic detritus, as ash or cinder, usually more or less stratified
andesitedark-colored volcanic rock composed essentially of plagioclase feldspar and one or more mafic minerals, as hornblende or biotite
silltabular body of igneous rock injected while molten between sedimentary or volcanic beds or along foliation planes of metamorphic rocks
trachytefine-grained volcanic rock consisting essentially of alkali feldspar and one or more subordinate minerals, as hornblende or mica: the extrusive equivalent of syenite