 It occurs both at the top and at the bottom of the sheet, through a maximum thickness of 6 inches. It is coextensive with the discoloration known as " sap " and occurs at many places near vertical joints. Under the microscope this structure proves to...  Congressional Serial Set - Seite 371907Vollansicht - Über dieses Buch
 | 1907 - 1026 Seiten
...issuing from between the sheets. • i. ; i the sheet, through a maximum thickness of 0 inches. Tt is coextensive with the discoloration known as "sap''...consist of minute, nearly parallel fissures, of no great contimiitv, which traverse the mineral particles and which in the thin section examined are especially... | |
 | Geological Survey (U.S.) - 1907 - 244 Seiten
..." underground water " issuing from between the sheets. the sheet, through a maximum thickness of 6 inches. It is coextensive with the discoloration known...section examined are especially conspicuous in the cfuartz and the .mica. The distance between these fissures measures from a tenth to a half a millimeter,... | |
 | Benjamin Kendall Emerson, Joseph Hartshorn Perry - 1907 - 700 Seiten
..." underground water " issuing from between the sheets. the sheet, through a maximum thickness of 6 inches. It is coextensive with the discoloration known...traverse the mineral particles and which in the thin action examined are esj)ecially conspicuous in the quartz and the mica. The distance between these... | |
 | Thomas Nelson Dale - 1908 - 458 Seiten
..."shakes." It occurs both at the top and at the bottom of the sheet, through a maximum thickness of 6 inches. It is coextensive with the discoloration known...places near vertical joints. Under the microscope tlu's structure proves to consist of minute, nearly parallel fissures, of no great continuity, which... | |
 | Thomas Nelson Dale, Herbert Ernest Gregory - 1911 - 698 Seiten
...shakes." It occurs both at the top and at the bottom of the sheet, through a maximum thickness of 6 inches. It is coextensive with the discoloration known...measures from a tenth to a half a millimeter, or from one two-hundred-and-fiftieth to one-fiftieth inch. The parallelism, both to the sheets and the " sap,"... | |
 | Geological Survey (U.S.) - 1911 - 162 Seiten
...shakes." It occurs both at the top and at the bottom of the sheet, through a maximum thickness of 6 inches. It is coextensive with the discoloration known...measures from a tenth to a half a millimeter, or from one two-hundred-and-fiftieth to one-fiftieth inch. The parallelism, both to the sheets and the " sap,"... | |
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