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volcanic rock consisting of large fragments fused together agglomerate
volcanic rock in which rounded cavities formed by expanding gas have subsequently become filled with mineral deposits amygdaloid
dark grey volcanic rock andesite
low-growing plant found only in volcanic craters on Hawaii having rosettes of narrow pointed silver-green leaves and clusters of profuse red-purple flowers on a tall stem Argyroxiphium sandwicense , silversword
abundant tasteless odorless multivalent nonmetallic element; best known in yellow crystals; occurs in many sulphide and sulphate minerals and even in native form (especially in volcanic regions) atomic number 16 , S , sulfur , sulphur
island in Indonesia east of Java; striking volcanic scenery; culture is known for elaborate dances and rituals and for handicrafts Bali
absorbent aluminum silicate clay formed from volcanic ash bentonite
white mineral consisting of silica; found in volcanic rocks cristobalite
grey volcanic rock containing plagioclase and quartz and other crystalline minerals dacite
volcanic island in the Windward Islands that was once a stronghold of the Carib Indians Dominica
shaking and vibration at the surface of the earth resulting from underground movement along a fault plane of from volcanic activity earthquake , quake , seism , temblor
sudden occurrence of a violent discharge of steam and volcanic material eruption , volcanic eruption
group of 21 volcanic islands in the North Atlantic between Iceland and the Shetland Islands Faeroe Islands , Faeroes , Faroe Islands , Faroes
group of more than 800 islands (100 inhabited) in the southwestern Pacific; larger islands (Viti Levu and Vanua Levu) are of volcanic origin surrounded by coral reefs; smaller islands are coral Fiji Islands , Fijis
seamount of volcanic origin (especially in the Pacific Ocean) guyot
largest and southernmost of the Hawaii islands; has several volcanic peaks Hawaii , Hawaii Island
group of volcanic and coral islands in the central Pacific Hawaiian Islands , Sandwich Islands
volcanic island in the North Atlantic near the Arctic Circle Iceland
group of volcanic islands in the south central Pacific; part of French Polynesia Iles Marquises , Marquesas Islands
volcanic island (part of Campania) in the Tyrrhenian Sea at the north end of the Bay of Naples Ischia
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