tuff-lava neck

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• Lava — flow redirects here. For the programming anti pattern, see Lava flow (programming). For other uses, see Lava (disambiguation) …   Wikipedia

• volcanic neck —    A vertical, pipe like tower of solidified lava or consolidated fragmental igneous rock that represents a former volcanic vent whose surrounding material (e.g., tuff and tephra) has been largely removed by erosion.    Compare: diatreme.    SW,… …   Glossary of landform and geologic terms

• igneous rock — Any of various crystalline or glassy, noncrystalline rocks formed by the cooling and solidification of molten earth material (magma). Igneous rocks comprise one of the three principal classes of rocks, the others being metamorphic and sedimentary …   Universalium

• Mount Mazama — collapsed a large caldera, which was later filled with Crater Lake. Elevation 8,159 ft …   Wikipedia

• Easter Island — For the album by Kris Kristofferson, see Easter Island (album). Rapa Nui redirects here. For other uses, see Rapa Nui (disambiguation). Coordinates: 27°7′S 109°22′W /  …   Wikipedia

• List of National Monuments of the United States — The United States has 101 protected areas known as national monuments. The President of the United States can establish a national monument by executive order, and the United States Congress can by legislation. The Antiquities Act of 1906… …   Wikipedia

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

• List of characters in the Kirby series — Articleissues citationstyle = December 2007 refimprove = December 2007This is a list of characters in the Kirby Nintendo video game series.Main charactersKirbynihongo|Kirby|カービィ|Kābī has been the star of a number of namesake games developed by… …   Wikipedia

• Peridot Mesa — The Peridot Mesa vent is a part of the San Carlos volcanic field located in San Carlos, Arizona, USA on the Apache Indian reservation. The mesa is about convert|3|km|mi|abbr=on in diameter and is capped by a basalt flow 3 to 6 meters thick that… …   Wikipedia

• Terceira Island — Infobox Islands name = Terceira image caption = Serra de Santa Bárbara image size = locator native name = native name link = Portugal nickname = location = Atlantic Ocean coordinates = coord|38|44|N|27|19|W|type:mountain… …   Wikipedia

• pre-Columbian civilizations — Introduction       the aboriginal American Indian (Mesoamerican Indian) cultures that evolved in Meso America (part of Mexico and Central America) and the Andean region (western South America) prior to Spanish exploration and conquest in the 16th …   Universalium