igneous rock

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igneous rock

The term for a rock formed when molten rock cools and hardens. Extrusive, or volcanic, igneous rock cools on the surface as lava. Intrusive igneous rock forms when molten rock cools underground.
Dictionary of Unfamiliar Words by Diagram Group Copyright © 2008 by Diagram Visual Information Limited
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.igneous rock - rock formed by the solidification of molten magma
rock, stone - material consisting of the aggregate of minerals like those making up the Earth's crust; "that mountain is solid rock"; "stone is abundant in New England and there are many quarries"
andesite - a dark grey volcanic rock
aplite - light-colored and fine-grained granitic rock consisting chiefly of quartz and feldspars
groundmass - (geology) the matrix of fine-grained crystalline material in which larger crystals are embedded
adesite - dark greyish extrusive rock
batholite, batholith, pluton, plutonic rock - large mass of intrusive igneous rock believed to have solidified deep within the earth
diorite - a granular crystalline intrusive rock
gabbro - one of a family of granular intrusive rocks
pegmatite - a form of igneous rock consisting of extremely coarse granite resulting from the crystallization of magma rich in rare elements
peridotite - a dark coarse-grained igneous rock consisting principally of olivine
rhyolite - very acid volcanic rock
volcanic rock - extrusive igneous rock solidified near or on the surface of the Earth
porphyritic rock, porphyry - any igneous rock with crystals embedded in a finer groundmass of minerals
sodalite - a vitreous mineral consisting of sodium aluminum silicate and sodium chloride in crystalline form; occurs in igneous rocks
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
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References in periodicals archive ?
No volcanic or intrusive magmatic rocks are known from the Baltic Sedimentary Basin.
Geochemistry and [sup.40]Ar/[sup.39]Ar age of early carboniferous dolerite sills in the southern Baltic sea/Laanemere lounaosa Vara-Karboni doleriitsete sillide geokeemia ja [sup.40]Ar/[sup.39]Ar isotoopvanus
Along most of the western margin of Patagonia there is an oblique belt of calcalkaline magmatic rocks (Halpern, 1968, 1973), interpreted as a Paleozoic magmatic arc by Ramos (1983).
Patagonia: where does it come from?
Magmas and magmatic rocks. Longman scientific and Technical, pp: 266.
Geochemical study of granitoids in Ghareh Gheshlagh in southeastern Kaleybar (NW of Iran)
This will be the first time the magmatic rocks of the lower crust in the Pacific Ocean have been sampled.
Scientist's search for ocean secret; Newcastle Uni boffin heading off to Pacific
In the crystalline basement, which is a continuation of the southern Finland Svecofennian orogenic belt, the metamorphic and magmatic rocks of the Lower Proterozoic Jagala complex as well as the intrusive porphyry-like potassium granites of the Neeme massif can be distinguished.
Alum shales causing radon risks on the example of Maardu area, north-Estonia
Calculation of oxygen isotope fractionation in magmatic rocks. Chemical Geology, 193, pp.
Regional hydrothermal alteration and [sup.18]O-depletion of the ca. 620 Ma Huntington Mountain pluton and related rocks, Cape Breton Island, Canada
Tectonically associated OIB-type magmatic rocks should not be ascribed to ophiolite sequences because they result from a Lower Cretaceous plume which was active within Neo-Tethys basin.
The Indus-Yarlung Zangbo ophiolite belt: A Mariana arc-backarc system analog
In the second part of the book an extensive section is dedicated to the metamorphic and magmatic rocks of the Western Alps.
Minerali del Piemonte e della Valle d' Asota ("Minerals of Piedmont and the Aosta Valley, Italy")
Remanent magnetism of mafic magmatic rocks, if primary, can provide paleo-intensities of the geomagnetic field at the time of crystallization (e.g., Macouin et al., 2003), thus providing constraints on processes in the liquid outer core.
Taking the pulse of planet earth: a proposal for a new multi-disciplinary flagship project in Canadian solid earth sciences
The anorogenic magmatic rocks within the Estonian basement have been relatively well studied.
Precambrian basement of Estonia
Various bodies of K-rich to ultra-potassic magmatic rocks in the Moldanubian Zone of the Bohemian Massif (Holub 1997, Gerdes et al.
Ti-rich granodiorite porphyries from the northeastern margin of the Klenov massif (Moldanubian Zone of the Bohemian Massif)

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