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igneous rock
(redirected from Magmatic rocks)

    Also found in: Wikipedia, Hutchinson 0.06 sec.
igneous rock: see rock rock, aggregation of solid matter composed of one or more of the minerals forming the earth's crust. The scientific study of rocks is called petrology. Rocks are commonly divided, according to their origin, into three major classes—igneous, sedimentary, and
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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 rocks. Though they vary widely in composition, most igneous rocks consist of quartz, feldspars, pyroxenes, amphiboles, micas, olivines, nepheline, leucite, and apatite. They may be classified as intrusive or extrusive rocks.



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Remanent magnetism of mafic magmatic rocks, if primary, can provide paleo-intensities of the geomagnetic field at the time of crystallization (e.
Taking the pulse of planet earth: a proposal for a new ... by Bleeker, Wouter / Geoscience Canada
475-465 Ma), which caused significant shortening and metamorphism of the magmatic rocks of the Notre Dame arc built on the Dashwoods.
PanLITHOPROBE workshop IV: IntraOrogen correlations and comparative ... by van Staal, C. / Geoscience Canada
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