- ultrabasic rocks
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ультраосновные породы
English-Russian dictionary of geology. 2011.
ultrabasic rocks
Смотреть что такое "ultrabasic rocks" в других словарях:
ultrabasic — “+ adjective Etymology: International Scientific Vocabulary ultra + basic : extremely basic : very low in silica and rich in ferromagnesian minerals ultrabasic igneous rocks peridotite is ultrabasic … Useful english dictionary
ultrabasic — /ul treuh bay sik/, adj. (of rocks) containing iron and magnesium, with little or no silica. Also, ultramafic. [1890 95; ULTRA + BASIC] * * * … Universalium
ultrabasic — ul•tra•ba•sic [[t]ˌʌl trəˈbeɪ sɪk[/t]] adj. gel pet (of rocks) containing iron and magnesium, with little or no silica • Etymology: 1890–95 … From formal English to slang
acid and basic rocks — Division of igneous rocks on the basis of their silicate mineral content, these minerals usually being the most abundant in such rocks. Rocks are described as acid, intermediate, basic, and ultrabasic, in order of decreasing silica content,… … 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
anthophyllite — anthophyllitic /an theuh feuh lit ik/, adj. /an theuh fil uyt/, n. a mineral, magnesium iron silicate, (Mg,Fe)7(Si8O22)(OH)2, occurring in schists in lamellar or fibrous clove brown crystals. [1835 45; < NL anthophyll(um) clove (see ANTHO , PHYL) … Universalium
Mount Kinabalu — Gunung Kinabalu Mount Kinabalu Elevation … Wikipedia
Geology of Tasmania — Tasmania has a varied geological history, with the world s biggest exposure of diabase, or dolerite. Rocks from the Neoproterozoic, Paleozoic and Mesozoic time periods appear. It is one of the few southern hemisphere areas glaciated during the… … Wikipedia
Ultramafic rock — Ultramafic (also referred to as ultrabasic) rocks are igneous and meta igneous rocks with very low silica content (less than 45%), generally >18% MgO, high FeO, low potassium, and are composed of usually greater than 90% mafic minerals (dark… … Wikipedia
Geochemistry — The field of geochemistry involves study of the chemical composition of the Earth and other planets, chemical processes and reactions that govern the composition of rocks and soils, and the cycles of matter and energy that transport the Earth s… … Wikipedia
Baltic Shield — The Baltic Shield (sometimes referred to as the Fennoscandian Shield) is located in Fennoscandia (Norway, Sweden and Finland), northwest Russia and under the Baltic Sea. The Baltic Shield is defined as the exposed Precambrian northwest segment of … Wikipedia
