igneous rock


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Related to igneous rock: Intrusive igneous rock

igneous rock:

see rockrock,
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 metamorphic.
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igneous rock

A class of rock formed by change of the molten material to the solid state; generally termed granite if coarse-grained.
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References in periodicals archive ?
B is mainly igneous rock formed through consolidated molten magma from volcanic activities before the late Triassic or in the late to early Permian [22], which contains coarse-grained granite, textured with tough and rough surface.
365-355 Ma bimodal intrusive and extrusive alkalic igneous rocks in the Cobequid Highlands of central Nova Scotia (Dunning et al.
This age also suggests that some of the granitic clasts incorporated into the Del Raton Formation conglomerates come from the erosion of early Carboniferous igneous rocks related to Chanic magmatism.
(1) The Permian-age coal from the Haizi Mine of the Huaibei Coalfield is intruded by Yanshan Period igneous rock. Thermal alteration occurs down to 160 m (~1.33 x sill thickness).
Use the drawing tool to write Yosemite under Igneous Rock on the diagram.
Granite is an igneous rock, but its youthful enthusiasms and passions have long since cooled.
Diabase is a fine- to medium-grained, dark gray to black intrusive igneous rock. It is extremely hard and is commonly quarried for crushed stone, under the name of trap.
For example, his claim that granite was an igneous rock, that is, of volcanic origin, was eventually accepted, but his belief that phlogiston, a hypothetical substance, accounted for the heat of subterranean earth was rejected.
The K-Ar method is also useful for dating biotite, muscovite, hornblende, and feldspar in coarse-grained igneous rock bodies such as granite or gabbro that solidify far beneath Earth's surface.
Which is the only igneous rock that can float on water?
"That evokes the gravitational pull of planets." In another section, fiery, high-caliber tricks illustrate the volcanic explosion of igneous rock into lava.