 | 1868 - 458 sider
...article, but the evidence is clear to me now, that all the lignite Tertiary beds of the west are but fragments of one great basin, interrupted here and...or concealed by the deposition of newer formations. All the evidence that I can secure seems to indicate that there are no valuable beds of lignite west... | |
 | Geological and Geographical Survey of the Territories (U.S.) - 1872 - 542 sider
...Those beds which occur on the east flank of the Rocky Mountains have been fallowed for five hundreA miles and more, north and south; and if it be true...extension east and west, or from the eastern range of the Rocky Mountains or Black Hills to Weber Canon, where an excellent coal is mined, will fall but little... | |
 | Geological and Geographical Survey of the Territories (U.S.) - 1872 - 524 sider
...Alaska beds to be considered. Those beds which occur on the east flank of the Rocky Mountains have been followed for five hundred miles and more, north and...concealed by the deposition of newer formations," t then their extension east and west, or from the eastern range of the Rocky Mountains or Black Hills... | |
 | Geological and Geographical Survey of the Territories (U.S.) - 1872 - 526 sider
...Alaska beds to be considered. Those beds which occur on the east flank of the Eocky Mountains have been followed for five hundred miles and more, north and...here and there by the upheaval of mountain chains, or cpumiled by the deposition of newer formations,"! then their extension Mist and west, or from the eastern... | |
 | William Edward Webb - 1873 - 516 sider
...Persifor Frazier, Jr., says : " Those beds which occur on the east flank of the Rocky Mountains have been followed for five hundred miles and more, north and...extension east and west, or from the eastern range of the Rocky Mountains or Black Hills to Weber Canyon, where an excellent coal is mined, will fall but little... | |
 | Geological and Geographical Survey of the Territories (U.S.) - 1873 - 278 sider
...that all the lignite tertiary beds of the West are but fragments of one great basin, interrupted hero and there by the upheaval of mountain chains or concealed by the deposition of newer formations. When I wrote the article on the lignites of the West, all my own investigations pointed strongly to... | |
 | William Edward Webb - 1874 - 510 sider
...Persifor Frazier, Jr., says : " Those beds which occur on the east^ flank of the Rocky Mountains have been followed for five hundred miles and more, north and...extension east and west, or from the eastern range of the Rocky Mountains or Black Hills to Weber Canyon, where an excellent coal is mined, will fall but little... | |
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... fragments of one great basin, interrupted here and there by the upheaval of mountain chains, or concealed by the deposition of newer formations,"! 
