 ... wood used is 15 hundredweight. The average thickness of stone is 5 inches and its specific gravity is 2.62. These data show that 30 pounds of stone are quarried with 1 pound of wood. Some plates are taken out in inclined position. The action of fire...  Bulletin of the United States Geological Survey - Seite 16von Geological Survey (U.S.) - 1908Vollansicht - Über dieses Buch
 | 1907 - 1026 Seiten
...taken out in inclined position. The action of fire is independent of the original surface of rock and also of the direction of lamination (the granite is...of preexisting cracks. Van Hise, in his treatise on metamorphism,6 is inclined to attribute sheet structure to solar temperature. Before these various... | |
 | Benjamin Kendall Emerson, Joseph Hartshorn Perry - 1907 - 700 Seiten
...taken out in inclined position. The action of fire is independent of the original surface of rock and also of the direction of lamination (the granite is...to attribute sheet structure to solar temperature. Before these various views are discussed the sheet structure as exposed at the Maine quarries will... | |
 | Thomas Nelson Dale - 1908 - 250 Seiten
...thickness of the sheets is attributed to the regulating influence of preexisting cracks. Van Ilise, in his treatise on metamorphism," is inclined to attribute...Bulletin 313, on pages 33-35, and is illustrated in Pis. II, B, III, V, VI, and IX, A of that bulletin. Sheet structure, as exposed at the quarries mentioned... | |
 | Thomas Nelson Dale - 1908 - 458 Seiten
...attributed to the regulating influence of preexisting cracks. Van Hise, in his treatise on metamorphism,0 is inclined to attribute sheet structure to solar...Bulletin 313, on pages 33-35, and is illustrated in Pis. II, B, III, V, VI, and IX, A of that bulletin. Sheet structure, as exposed at the quarries mentioned... | |
 | Thomas Nelson Dale, Herbert Ernest Gregory - 1911 - 698 Seiten
...attributed to the regulating influence of preexisting cracks. Van Hise, in his treatise on metamorphism,2 is inclined to attribute sheet structure to solar...Bulletin 313. on pages 33-35, and is illustrated in Plates II, Z?, Ill, V, VI, and IX, A, of that bulletin. Its general character is illustrated in Plates... | |
 | 1907 - 1200 Seiten
...taken out in inclined position. The action of fire is independent of the original surface of rock and also of the direction of lamination (the granite is...of preexisting cracks. Van Hise, in his treatise on metamorphism,6 is inclined to attribute sheet structure to solar temperature. Before these various... | |
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