volcanic effusion

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• Volcanic rock — is an igneous rock of volcanic origin. Texture Volcanic rocks are usually fine grained or aphanitic to glassy in texture. They often contain clasts of other rocks and phenocrysts. Phenocrysts are crystals that are larger than the matrix and are… …   Wikipedia

• Mount Edziza volcanic complex — Mount Edziza, one of the main volcanoes of the Mount Edziza volcanic complex Elevation …   Wikipedia

• Garibaldi Lake Volcanic Field — Infobox Mountain Name=Garibaldi Lake Volcanic Field Photo= MtGaribaldi NorthFace TheTable.jpg Caption= The north face of Mount Garibaldi rises above The Table and Garibaldi Lake Elevation=convert|2316|m|ft|0 Location=British Columbia, Canada… …   Wikipedia

• volcano — /vol kay noh/, n., pl. volcanoes, volcanos. 1. a vent in the earth s crust through which lava, steam, ashes, etc., are expelled, either continuously or at irregular intervals. 2. a mountain or hill, usually having a cuplike crater at the summit,… …   Universalium

• Precambrian time — Interval of geologic time from с 3. 8 billion years ago, the age of the oldest known rocks, to 544 million years ago, the beginning of the Cambrian Period. This interval represents more than 80% of the geologic record and thus provides important… …   Universalium

• Pacific Ring of Fire — The Ring of Fire redirects here. For other uses of the term, see Ring of Fire (disambiguation). The Pacific Ring of Fire (see below) …   Wikipedia

• Volcanism on Io — This is a sub article to Io (moon)Volcanism on Io, a moon of Jupiter, produces lava flows, volcanic pits, and plumes of sulfur and sulfur dioxide hundreds of kilometres high. This volcanic activity was discovered in 1979 by Voyager 1 imaging… …   Wikipedia

• Hekla — and an Icelandic Horse …   Wikipedia

• Large igneous province — Only a few of the largest Large Igneous Provinces are indicated (by the dark purple areas) on this geological map, which depicts crustal geologic provinces as seen in seismic refraction data. A Large Igneous Province (LIP) is an extremely large… …   Wikipedia

• Mayon Volcano — as viewed from Ligñon Hill in Legazpi City, Albay in December 2006 Elevation …   Wikipedia

• Laki — Infobox Mountain Name=Laki Photo=Lakagigar Iceland 2004 07 01.jpg|Laki Caption= Elevation= varies: canyon to 1725 m (5659 ft) Location=Iceland | Prominence = Coordinates = coord|64|03|53|N|18|13|34|W|type:mountain region:CA Topographic… …   Wikipedia