Upon the shore he found an out-cropping of brittle, igneous rock.
"The Beasts of Tarzan" by Edgar Rice Burroughs
The deposition of ores of igneous source in the country rock into which the igneous rocks are intruded is a phase of contact metamorphism.
"The Economic Aspect of Geology" by C. K. Leith
Igneous rocks, while still molten, have been forced into other rocks from below, or poured out on the surface from volcanoes.
"Boy Scouts Handbook" by Boy Scouts of America
Several pieces of shale lay exposed under a fold of igneous rock.
"The Long Voyage" by Carl Richard Jacobi
Great rents had been formed, igneous rocks had boiled up through them; and then in a grand, titanic effort the fire had forced its way up.
"Silver and Gold" by Dane Coolidge
Many altered igneous rocks owe their green colour to the presence of secondary chlorite.
"Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 3" by Various
A group, whether of alluvial deposits, sedimentary strata, or igneous rocks, referred to a common origin or period.
"Principles of Geology" by Charles Lyell
The igneous rocks present a considerable range of composition.
"Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 6" by Various
Were this the fact, igneous rock should be found about it.
"The Geography of the Region about Devils Lake and the Dalles of the Wisconsin" by Rollin D. Salisbury
The other kinds of rocks are known as igneous rocks, which have been melted under the action of heat and become solid on cooling.
"Cornwall" by Sabine Baring-Gould
All these forms are found in vitreous igneous rocks.
"Encyclopaedia Britannica, 11th Edition, Volume 7, Slice 7" by Various
The igneous rocks will be described under the various groups of Granitic, Trappean, and Volcanic.
"Early Days in North Queensland" by Edward Palmer
The Flume, on Star Island, is a fine specimen of the intrusion of igneous rock among the harder formation.
"Nooks and Corners of the New England Coast" by Samuel Adams Drake
Amongst the most interesting features of the Bakony-wald are the volcanic and the igneous rocks.
"Encyclopaedia Britannica, 11th Edition, Volume 13, Slice 8" by Various
Green and dark-green are the prevalent tints of the hornfelses produced by the alteration of igneous rocks.
"Encyclopaedia Britannica, 11th Edition, Volume 13, Slice 6" by Various
The nucleus of igneous rock is four miles in diameter and more than a mile in depth.
"The Elements of Geology" by William Harmon Norton
Hall conjectured in addition that the rate at which the fused mass cooled might have some bearing on the structure of igneous rocks.
"An Introduction to the History of Science" by Walter Libby
Rounded boulder shaped mountains of granite or igneous rocks are to me far more impressive than much taller ones of other formations.
"A Summer's Outing" by Carter H. Harrison
The rock is very hard and similar to those geologists call igneous.
"Twenty-Five Years in a Waggon in South Africa" by Andrew A. Anderson
Back of these rise higher, igneous rocks, surmounted by variegated sandstone, of peculiar color, 2,000 feet high.
"The Rand-McNally Bible Atlas" by Jesse L. Hurlbut