mafic rock sentence in Hindi
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- The peak consists of non-alkali mafic rocks, dating from the Early Pleistocene overtop of non-alkali felsic rocks from the Late Miocene-Pliocene.
- In some modern literature, the term " variole " is defined as a type of spherulite that occurs in a mafic rock.
- All are dominated by quartzofeldspathic gneiss with a few percent mafic rock ( eclogite ) or ultramafic rock ( garnet-bearing peridotite ).
- Augite is the most common ferro-magnesian in mafic rocks, but biotite and hornblende are on the whole more frequent in felsic rocks.
- Pegmatites associated with granitic domes within the Archaean Yilgarn Craton intruding ultramafic and mafic rocks contain red, orange and brown almandine garnet.
- Baddeleyite is commonly found with zircon ( ZrSiO 4 ), yet it forms in places with lower silica content, such as mafic rocks.
- The "'Olympic "'soil series is a type of deep, dark reddish brown moderately fine-textured soil which has developed on mafic rock such as basalt.
- If by chance the granite happens to hit a zone of mafic rock incorporated in the continental crust, then the chemistry will be completely different,
- Typically, they are less resistant to weathering than the enclosing aphanitic rock and, as a result, form pock-marks on the weathered surfaces of mafic rocks.
- Typically, primitive melts of this composition form lamprophyre, lamproite, kimberlite and sometimes nepheline-bearing mafic rocks such as alkali basalts and essexite gabbros or even carbonatite.
- These rock types include iron-rich diorite, gabbro, and norite; leucocratic mafic rocks such as leucotroctolite and leuconorite; and iron-rich felsic rocks, including monzonite and rapakivi granite.
- Oceanic crust, on the otherhand, is made from mafic rock, basalt, which is made of amphiboles and pyroxenes, which crystallize earlier in the Bowens reaction series.
- Nickel is a chalcophile element which prefers sulfides, so an ultramafic or mafic rock which has a sulfide phase in the magma may form nickel sulfides.
- A few dikes of gabbro and other mafic rock from the Jurassic Period, 210 to 145 million years ago, are present in Pendleton and surrounding counties.
- Abstract mafic rocks at Lake Nipigon give evidence of rift-related continental basaltic magmatism during the Midcontinent Rift System event, estimated at 1, 109 million years ago.
- The process of forming " nickel laterite " deposits is essentially similar to the formation of gold laterite deposits, except that ultramafic or mafic rocks are required.
- By contrast, more mafic rocks, such as tonalite, gabbro and diorite, have 1 to 5 ppm uranium, and limestones and sedimentary rocks usually have equally low amounts.
- Samarium is accommodated more easily into mafic minerals, so a mafic rock which crystallises mafic minerals will concentrate neodymium in the melt phase faster relative to samarium.
- Mafic rocks are associated with strike-slip faults and normal shoshonitic ( both 25 and 21 m ) to andesitic ( post-Miocene ) lavas are found in the southern Altiplano.
- It tends to grow in wet habitats, such as on river bluffs, river bottoms, and flatwoods, and generally over basic substrates, such as mafic rocks, shells, or calcareous sediment.
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