Search results
Results from the WOW.Com Content Network
Diabase (/ ˈ d aɪ. ə ˌ b eɪ s /), also called dolerite (/ ˈ d ɒ l. ə ˌ r aɪ t /) or microgabbro, [1] is a mafic, holocrystalline, subvolcanic rock equivalent to volcanic basalt or plutonic gabbro.
Dolomite (/ ˈ d ɒ l. ə ˌ m aɪ t, ˈ d oʊ. l ə-/) is an anhydrous carbonate mineral composed of calcium magnesium carbonate, ideally CaMg(CO 3) 2. The term is also used for a sedimentary carbonate rock composed mostly of the mineral dolomite (see Dolomite (rock) ).
The upper parts of sills may be more coarsely grained. Dolerite is crushed to use as road metal, and aggregate. [8] Mount Anne, Mount Mueller, and Mount Wedge in the south west are capped in dolerite, where it also makes contact with Precambrian rocks. It appears that the magma came from the crust rather than the mantle.
Dolomite (also known as dolomite rock, dolostone or dolomitic rock) is a sedimentary carbonate rock that contains a high percentage of the mineral dolomite, CaMg(CO 3) 2. It occurs widely, often in association with limestone and evaporites , though it is less abundant than limestone and rare in Cenozoic rock beds (beds less than about 66 ...
Linum dolomitcum only grows in temperate biomes such as Hungary, where it is natively found. [4] It occurs on sloped ground with thin soil and high amounts of sunlight.The population is considered stable even though its numbers have been decreasing slowly due to high trampling rates.
The Northern English/Scots term whin is first attested in the fourteenth century, and the compound whinstone from the sixteenth. [2] The Oxford English Dictionary concludes that the etymology of whin is obscure, though it has been claimed, fancifully, that the term 'whin' derives from the sound it makes when struck with a hammer.
Other minerals that form concretions include iron oxides or hydroxides (such as goethite and hematite), [19] [20] dolomite, siderite, [21] ankerite, [22] marcasite, [23] barite, [24] [25] and gypsum. [26] Although concretions often consist of a single dominant mineral, [27] other minerals can be present depending on the environmental conditions ...
A metamorphic facies is a set of mineral assemblages in metamorphic rocks formed under similar pressures and temperatures. [1] The assemblage is typical of what is formed in conditions corresponding to an area on the two dimensional graph of temperature vs. pressure (See diagram in Figure 1). [1]