alkali rock


alkali rock
щелочная порода

English-Russian dictionary of geology. 2011.

Смотреть что такое "alkali rock" в других словарях:

  • alkali rock — Mineral. any igneous rock with a marked preponderance of alkali and a low percentage of silica. * * * …   Universalium

  • alkali rock — Mineral. any igneous rock with a marked preponderance of alkali and a low percentage of silica …   Useful english dictionary

  • Rock microstructure — includes the texture of a rock and the small scale rock structures. The words texture and microstructure are interchangeable, with the latter preferred in modern geological literature. However, texture is still acceptable because it is a useful… …   Wikipedia

  • sedimentary rock — Rock formed at or near the Earth s surface by the accumulation and lithification of fragments of preexisting rocks or by precipitation from solution at normal surface temperatures. Sedimentary rocks can be formed only where sediments are… …   Universalium

  • 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

  • Moon rock — Olivine basalt collected by Apollo 15. Moon rock describes rock that formed on the Earth s moon. The term is also loosely applied to other lunar materials collected during the course of human exploration of the Moon. The rocks collect …   Wikipedia

  • Igneous rock — Geologic provinces of the world (USGS)   Shield …   Wikipedia

  • metamorphic rock — Any of a class of rocks that result from the alteration of preexisting rocks in response to changing geological conditions, including variations in temperature, pressure, and mechanical stress. The preexisting rocks may be igneous, sedimentary,… …   Universalium

  • Some typical occurrences of the rock-forming feldspars — ▪ Table Some typical occurrences of the rock forming feldspars Potassium feldspars* sanidine potassium rich volcanic rocks and near surface minor intrusions e.g., rhyolites, trachytes, and high temperature contact metamorphic rocks orthoclase… …   Universalium

  • Common rock-forming minerals — ▪ Table Common rock forming minerals quartz calcite biotite hematite alkali feldspars dolomite muscovite limonite plagioclase feldspars clay minerals amphibole …   Universalium

  • Black Rock Desert — ▪ region, Nevada, United States       arid region of lava beds and alkali flats composing part of the Basin and Range Province and lying in Humboldt and Pershing counties of northwestern Nevada, U.S. With an area of about 1,000 square miles… …   Universalium


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