"Schist" Quotes from Famous Books
 ... quartzites, and clays into the harder form of slate. Where the changes go to the extreme point, rocks originally distinctly bedded probably may be so taken to pieces and made over that all traces of their stratification may be destroyed, all fossils obliterated, and the stone transformed into mica schist, or granite or other crystalline rock. It may be injected into the overlying strata in the form of dikes, or it may be blown forth into the air through volcanoes. Involved in mountain-folding, after being more or less changed in the manner described, the beds may become tangled ...
— Outlines of the Earth's History - A Popular Study in Physiography • Nathaniel Southgate Shaler
... formations are in places reduced to baselevel. The first three invariably are, unless protected by a harder rock; the next three usually are; the Catoctin schist only in small parts of its area; the Weverton only along a ...
— History and Comprehensive Description of Loudoun County, Virginia • James W. Head
... sinks towards the Zambesi, and the soil, which among the hills is thin or sandy, becomes deeper. In that part and along the river banks there are great possibilities of agricultural development, while the uplands, where the subjacent rock is granite or gneiss, with occasional beds of slate or schist, are generally barer and more dry, fit rather for pasture than for tillage. More rain falls than in Bechuanaland, so it is only at the end of the dry season, in October, that the grass begins to fail on the ...
— Impressions of South Africa • James Bryce
... up on the ridge, where the white granite of the summit came into contact with the burnt limestone and schist; and, of all the rich mines, the Homestake was the best, until the cloudburst came along and spoiled all of them. Wilhelmina still remembered how the great flood had passed the town, moving boulders as if they were pebbles; but not until it reached the place where she stood ...
— Wunpost • Dane Coolidge
... first deposited apparently in water, passed into a semi-fluid state, became strangely waved and contorted, and assumed in its composition a highly crystalline character. Such is peculiarly the case with the fundamental or gneiss deposits of the period. In the overlying mica schist there is still much of contortion and disturbance; whereas the clay slate, which lies over all, gives evidence, in its more mechanical texture, and the regularity of its strata, that a gradual refrigeration of the general mass had been ...
— The Testimony of the Rocks - or, Geology in Its Bearings on the Two Theologies, Natural and Revealed • Hugh Miller
... the same manner in New Zealand as in Europe; for Professor J. von Haast has described {47} a section near the coast, consisting of mica-schist, "covered by 5 or 6 feet of loess, above which about 12 inches of vegetable soil had accumulated." Between the loess and the mould there was a layer from 3 to 6 inches in thickness, consisting of "cores, implements, flakes, and chips, all manufactured from hard basaltic ...
— The Formation of Vegetable Mould through the action of worms with • Charles Darwin
... readily. It was the presence of these which has tempted explorers to throw away their money in search of coal; as in the case at Donington on-Bain, where Mr. Bogg drove a bore to the depth of 309ft., but only found clay and thin bands of inflammable schist. {93c} In the case of Woodhall Spa, the money thrown away on one purpose has brought health and wealth to others, from a source then undreamt of in man’s philosophy. We cannot leave the Kimeridge clay without noting that its presence at Woodhall, in the position where ...
— Records of Woodhall Spa and Neighbourhood - Historical, Anecdotal, Physiographical, and Archaeological, with Other Matter • J. Conway Walter
... from Tacloban southwards to Palos and Tanauan, two flourishing places on the east coast. Hardly half a league from the latter place, and close to the sea, a cliff of crystal lime rock rises up out of the sandy plain, which was level up to this point. It is of a greyish-green quartzose chlorite schist, from which the enterprising Father had endeavored, with a perseverance worthy of better success, to procure lime by burning. After an ample breakfast in the convent, we proceeded in the afternoon to Dagami, and, on the next day, to ...
— The Former Philippines thru Foreign Eyes • Fedor Jagor; Tomas de Comyn; Chas. Wilkes; Rudolf Virchow. |
