• (n.) A dark-colored, basic, igneous rock, composed essentially of pyroxene and a triclinic feldspar with magnetic iron. By many authors it is considered equivalent to a coarse-grained basalt. • (n.) Coarse-grained basalt. • (n.) A dark, crystalline, igneous rock, chiefly pyroxene with labradorite. • (n.) Diabase. • (n.) A...
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http://thinkexist.com/dictionary/meaning/dolerite/
Dol'er·ite noun [ Greek ... deceitful; because it was easily confounded with diorite.]
(Geol. & Min.) A dark-colored, basic, igneous rock, composed essentially of pyroxene and a triclinic feldspar with magnetic iron. By many authors it is considered equivalent to a coarse-grained basalt.
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http://www.encyclo.co.uk/webster/D/107
Igneous rock formed below the Earth's surface, a form of basalt, containing relatively little silica (mafic in composition). Dolerite is a medium-grained (hypabyssal) basalt and forms in shallow intrusions, such as dykes, which cut across the rock strata, and sills, which push between beds of sedimentary rock. When exposed at the surface, d...
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https://www.encyclo.co.uk/local/21221
A dark coloured igneous rock, intruded into the earth's crust, with medium sized crystals of feldspar, pyroxene and other, less common, minerals.
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https://www.encyclo.co.uk/local/23001
a coarse-grained variety of basalt. · any of various other igneous rocks, as diabase. · any basaltlike igneous rock whose composition can be determined only by microscopic examination.
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https://www.infoplease.com/dictionary/dolerite
No exact match found.
