- GLOSSARY OF VOLCANIC TERMS
A lava with a silica content (by weight) ranging from 45-55% (AGI, 1976, p. 447; Peterson and Tilling, 2000, p. 957).
Glossary of volcanic terms. - University of Wisconsin Oshkosh. G. J. Hudak. 2001.
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Lava — flow redirects here. For the programming anti pattern, see Lava flow (programming). For other uses, see Lava (disambiguation) … Wikipedia
Mafic — is an adjective describing a silicate mineral or rock that is rich in magnesium and iron; the term is a portmanteau of the words magnesium and ferric . Most mafic minerals are dark in color and the relative density is greater than 3. Common… … Wikipedia
lava — /lah veuh, lav euh/, n. 1. the molten, fluid rock that issues from a volcano or volcanic vent. 2. the rock formed when this solidifies, occurring in many varieties differing greatly in structure and constitution. [1740 50; < It, orig. Neapolitan… … Universalium
pahoehoe lava — GLOSSARY OF VOLCANIC TERMS A Hawaiian term to describe lava flows with smooth, continuous surfaces (Kilburn, 2000, p. 291). Pahoehoe flows may have a variety of surfaces described as smooth, ropy (characterized by rope like, commonly braided flow … Glossary of volcanic terms
Volcanic plateau — A volcanic plateau is a plateau produced by volcanic activity. There are two main types: lava plateaus and pyroclastic plateaus.Lava plateauLava plateaus are formed by highly fluid mafic lava (the older term is basic lava ) during numerous… … Wikipedia
Medicine Lake Volcano — as seen from Lava Beds National Monument … Wikipedia
Anahim hotspot — The Anahim hotspot is a volcanic hotspot in central British Columbia, Canada. It is situated on the Interior Plateau, a large region that lies between the Cariboo and Monashee Mountains to the east, and the Hazelton Mountains, Coast Mountains and … Wikipedia
Pyroclastic fall — A pyroclastic fall is a uniform deposit of material which has been ejected from an eruption or plume such as an ash fall or tuff. Pyroclastic flows occur relatively spontaneously in the geological time scale and are great indicators of time.… … Wikipedia
Dundee — For other uses, see Dundee (disambiguation). Coordinates: 56°27′50″N 2°58′12″W / 56.464°N 2.970°W / 56.464; 2.970 … Wikipedia
nephelinite — nephelinitic /nef euh leuh nit ik/, adj. /nef euh leuh nuyt /, n. Petrog. a fine grained, dark rock of volcanic origin, essentially a basalt containing nepheline but no feldspar and little or no olivine. [1860 65; NEPHELINE + ITE1] * * * ▪ lava… … Universalium