"Volcanic rock" Quotes from Famous Books
 ... the north of the Adelaide. I did not inform any of the party except Thring and Auld, that I was so near to the sea, as I wished to give them a surprise on reaching it. Proceeded through a light soil, slightly elevated with a little ironstone on the surface, the volcanic rock cropping out occasionally; also some flats of black alluvial soil. The timber much smaller and more like scrub, showing that ...
— A Source Book Of Australian History • Compiled by Gwendolen H. Swinburne
... us. But for our steam we should have been still drifting to the S.W., as the day has been nearly calm throughout. Fernando de Noronha, in the wayside of the commerce of all the world, is sighted by more ships, and visited by fewer, than any other spot of earth. It is a broken, picturesque, volcanic rock, in mid ocean, covered with a pleasing coat of verdure, including trees of some size, and the top of the main island is cultivated in small farms, &c. Awfully hot when the sun shines, and indeed, when he does not shine. Just after dark ...
— The Cruise of the Alabama and the Sumter • Raphael Semmes
... world's diamonds come from the Kimberley and Transvaal fields of South Africa, where they are found in a much decomposed volcanic rock called "blue ground." This is a rock of dull, greasy appearance consisting largely of serpentine. It was originally peridotite, occurring in necks or plugs of old volcanoes penetrating carbonaceous sediments. When the rock is mined and spread at the surface, it decomposes in the ...
— The Economic Aspect of Geology • C. K. Leith
... generally more or less imperfect, worn, chipped, or otherwise injured. This condition is to be accounted for by the fact that they are all of ancient manufacture; an implement of this kind being rarely, if ever, made by the Indians at the present day. They are usually of a hard volcanic rock, not employed by the present inhabitants in the manufacture of implements. They have in most cases been collected from the ruins of the Mesa and Cliff dwellers, by whose ancestors they were probably made. I was unable to learn of a single instance in which one of these ...
— Illustrated Catalogue Of The Collections Obtained From The Indians Of New Mexico And Arizona In 1879 • James Stevenson |
