Scientists study the igneous rock formed by volcanoes. From LearnThat.org.
Rocks formed by igneous agents. From Wordnet, Princeton University.
igneous rock is rock formed by solidification from a molten state. From Wordnet, Princeton University.
They are called "igneous" rocks, from the Latin word. From Wordnik.com. [Diggers in the Earth] Reference
When we pass from the agency which geologists term igneous, to aqueous and atmospheric agencies, we see the like ever growing complications of effects. From Wordnik.com. [Essays on Education and Kindred Subjects Everyman's Library] Reference
They are composed of a kind of igneous rock not found anywhere near Wiltshire. From Wordnik.com. [Wanderings in Wessex An Exploration of the Southern Realm from Itchen to Otter] Reference
The standard name for "igneous" is 岩浆岩, which translates as "magma rock.". From Wordnik.com. [Danwei - Media, Advertising, and Urban Life in China] Reference
So gradually the Huttonian explanation of the origin of granites and other "igneous" rocks, whether massed or in veins, came to be accepted. From Wordnik.com. [A History of Science: in Five Volumes. Volume III: Modern development of the physical sciences] Reference
A kind of igneous snow-flakes? floating in a fluid of their own, or very nearly their own, specific gravity?. From Wordnik.com. [James Nasmyth: Engineer, An Autobiography.]
Near the base of the volcanic series intrusive igneous rocks of. From Wordnik.com. [Encyclopaedia Britannica, 11th Edition, Volume 4, Part 4 "Bulgaria" to "Calgary"] Reference
The best rocks to use are finely ground "basic" igneous rocks like basalts. From Wordnik.com. [Organic Gardener's Composting] Reference
Most basic igneous rocks also contain a wide range of trace mineral nutrients. From Wordnik.com. [Organic Gardener's Composting] Reference
The microcontinents with cratons and igneous formations are pretty well mapped. From Wordnik.com. [Perseus Spur]
We were above the gypsum now, the soapy slopes giving way to a brownish-rose igneous. From Wordnik.com. [Futures Imperfect]
The Ceylon sapphires are found in the streams, but originate in rock of igneous origin. From Wordnik.com. [A Text-Book of Precious Stones for Jewelers and the Gem-Loving Public] Reference
Both islands share an abundance of igneous rocks, mostly of basalt and cineritic cones. From Wordnik.com. [Islas Revillagigedo dry forests] Reference
The rugged western half of Khao-Yai Park lies on Permo-Triassic igneous volcanic rocks. From Wordnik.com. [Dong Phayayan Khao-Yai Forest Complex, Thailand] Reference
Sedimentary or metamorphic rocks melt, and may later return to the surface as igneous rocks. From Wordnik.com. [Chapter 5] Reference
The upper part of new mountains consists of sedimentary rocks resting on deeply set igneous rocks. From Wordnik.com. [Chapter 5] Reference
Rocks can be arranged in three major groups; igneous rocks, sedimentary rocks and metamor - phic rocks. From Wordnik.com. [Chapter 5] Reference
Stony meteorites appear almost identical to our terrestrial igneous rocks, which makes them tough to spot. From Wordnik.com. [Deception Point]
Some diseases, he averred, require earthy remedies, others aqueous or atmospheric, and still others, igneous. From Wordnik.com. [Primitive Psycho-Therapy and Quackery] Reference
Like labradorite and anorthite, it is a common constituent of basic igneous rocks, such as gabbro and basalt. From Wordnik.com. [Encyclopaedia Britannica, 11th Edition, Volume 4, Part 4 "Bulgaria" to "Calgary"] Reference
We started up it, winding in and out between the trees till the igneous on either side began to shut them out. From Wordnik.com. [Futures Imperfect]
Where the igneous rocks prevail, the coast is finely indented; where the sandstones abound, it is gently curved. From Wordnik.com. [The Atlantic Monthly, Volume 07, No. 40, February, 1861] Reference
The land surface is two-thirds limestone, the rest is composed of igneous rocks, sedimentary shale, and alluvium. From Wordnik.com. [Jamaican moist forests] Reference
Metamorphic rocks, which are structurally changed igneous or sedimentary rocks, caused by immense heat and pressure. From Wordnik.com. [Chapter 4] Reference
The stone formation bears the usual indications of aqueous and igneous deposits, but more of the former than the latter. From Wordnik.com. [Official Report of the Niger Valley Exploring Party] Reference
There were mountains everywhere -- huge, rugged mountains, erected in the igneous fury of world-making, long since calmed. From Wordnik.com. [The Furnace of Gold] Reference
The whole region is as certainly of igneous origin, and was the centre of as violent fiery action, as the vicinity of Naples. From Wordnik.com. [Roman Mosaics Or, Studies in Rome and Its Neighbourhood] Reference
After some millions of years, the upper sedimentary rocks erodes away by weathering and the deeper igneous rocks are exposed. From Wordnik.com. [Chapter 5] Reference
It is underlain by a mix of metamorphic, igneous, and sedimentary rocks, with soils that are mostly Alfisols and some Ultisols. From Wordnik.com. [Ecoregions of the United States-Level III (EPA)] Reference
An awful vision of igneous rocks, with mis-shapen creatures prowling about amongst them, instantly appeared to Beth in illustration of a. From Wordnik.com. [The Beth Book Being a Study of the Life of Elizabeth Caldwell Maclure, a Woman of Genius] Reference
Deeply weathered, acidic, intrusive igneous rock is common and is far more extensive than in the Northern Rockies or the Middle Rockies. From Wordnik.com. [Ecoregions of the United States-Level III (EPA)] Reference
All the knowledge we have of the subject justifies the inference that most of the igneous rocks which have been poured out in our Western. From Wordnik.com. [Scientific American Supplement, No. 446, July 19, 1884] Reference
SHRODER: You can get quite a few clues, but again, the first thing you can do is tell whether it is sedimentary, igneous, or metamorphic. From Wordnik.com. [CNN Transcript Oct 18, 2001] Reference
But we have conclusive evidence that the gold was there in Archæan times, while the igneous rocks are all of modern, probably of Tertiary, date. From Wordnik.com. [Scientific American Supplement, No. 446, July 19, 1884] Reference
Thus the igneous rock called basalt was created at a great depth, and contains little feldspar compared to granite, which formed near the surface. From Wordnik.com. [Chapter 5] Reference
For example, the igneous rock called basalt was created at a great depth and contains little feldspar compared to granite, which formed near the surface. From Wordnik.com. [6. Obtaining glaze materials] Reference
It exhibits extraordinary signs of commotion and vicissitude; the lowest rocks indicating a previous condition of igneous fusion; those above them of aqueous solution. From Wordnik.com. [An Expository Outline of the "Vestiges of the Natural History of Creation" With a Notice of the Author's "Explanations:" A Sequel to the Vestiges] Reference
The dynamic plate tectonics of the area, and the mixing of igneous, metamorphic, and sedimentary geological formations, have resulted in diverse lithologies and soils. From Wordnik.com. [Proclamation On The Cascade Siskiyou National Monument] Reference
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