mafic lava

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. . 2001.

Look at other dictionaries:

  • 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 .[1] 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

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”

We are using cookies for the best presentation of our site. Continuing to use this site, you agree with this.