 | 1864 - 412 pàgines
...thus be left behind long before the spring reaches the earth's surface. If this theory be adopted, it will follow that the metalliferous portion of a fissure,...removed by aqueous denudation. Ages before such changes are accomplished thermal and mineral springs will have ceased to act ; so that the want of identity... | |
 | 1864 - 126 pàgines
...reaches the earth's surface. If this theory be adopted, it will follow that the metalliferous portions of a fissure, originally thousands of feet or fathoms...a long series of convulsions, and until the higher paTts of the same rent, together with its contents and the rocks which it has traversed, have been... | |
 | 1865 - 400 pàgines
...thus be left behind long before the spring reaches the earth's surface. If this theory be adopted, it will follow that the metalliferous portion of a fissure,...removed by aqueous denudation. Ages before such changes are accomplished, thermal and mineral springs will have ceased to act ; so that the want of identity... | |
 | 1865 - 388 pàgines
...thus be left behind long before the spring reaches the earth's surface. If this theory be adopted, it will follow that the metalliferous portion of a fissure,...removed by aqueous denudation. Ages before such changes are accomplished, thermal and mineral springs will have ceased to act ; so that the want of identity... | |
 | 1865 - 846 pàgines
...thus be left behind long before the spring reaches the earth's surface. If this theory be adopted, it will follow that the metalliferous portion of a fissure,...contents and the rocks which it had traversed, have bee*h removed by aqueous denudation. Ages before such changes are accomplished, thermal and mineral... | |
 | British Association for the Advancement of Science - 1865 - 816 pàgines
...thus be left behind long before the spring reaches the earth's surface. If this theory be adopted, it will follow that the metalliferous portion of a fissure,...miner until it has been upheaved by a long series of con misions, and until the higher parts of the same rent, together with its contents and the rocks... | |
 | 1865 - 372 pàgines
...thus be left behind long twfore the sprint; roaches the earth's surface. If this theory be adopted, it will follow that the metalliferous portion of a fissure,...thousands of feet or fathoms deep, will never be exposed iu regions accessible to the miner until ¡t has been upheaved by a long series of convulsions, and... | |
 | 1866 - 374 pàgines
...thus be left behind long before the spring reaches the earth's surface. If this theory be adopted, it will follow that the metalliferous portion of a fissure,...its contents and the rocks which it had traversed bave been removed by aqueous denudation. Ages before such changes are accomplished, thermal and mineral... | |
 | 1866 - 368 pàgines
...thus be left behind long before the spring reaches the earth's surface. If this theory be adopted, it will follow that the metalliferous portion of a fissure,...to the miner until it has been upheaved by a long scries of convulsions, and until the higher parts of the same rent, together with its contents and... | |
 | 1865 - 372 pàgines
...thus be left behind long before the spring reaches the earth's surface. If this theory be adopted, it will follow that the metalliferous portion of a fissure,...removed by aqueous denudation. Ages before such changes are accomplished, thermal and mineral springs will have ceased to act ; so that the want of identity... | |
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... or fluids begin to part with some of their heat. Almost everything, save the alkaline metals, silica, and certain gases, may thus be left behind long before the spring reaches the earth's surface. If this theory be adopted, it will follow that the... 