 Disglomerates, alternating with light- and dark-coloured clays and shales. In places where the beds have been strongly folded, the clays and sands are altered into sandstones and shales. The age of the lignite beds is uncertain as no fossils were found...  Bulletin of the United States Geological Survey - Seite 22von Geological Survey (U.S.) - 1903Vollansicht - Über dieses Buch
 | 1903 - 1030 Seiten
...coherent sandstones and conglomerates, alternating with light and darkcolored clays and shales, hi places where the beds have been strongly folded the...in them, but they probably belong to the Tertiary. " Brook*, AH, Coal resources of Alaska: Twenty-second Ann. Kept. U. 8. Oeol. Survey, pt. 3. p. 559.... | |
 | Geological Survey of Canada - 1903 - 960 Seiten
...slightly coherent sandstones and con- Yukon Disglomerates, alternating with light- and dark-coloured clays and shales. In places where the beds have been...them, but they probably belong to the Tertiary. ' A lignite horizon, with one or more seams, occurs in this formation at a number of widely separated points,... | |
 | Geological Survey of Canada - 1903 - 836 Seiten
...slightly coherent sandstones and con- Yukon Disglomerates, alternating with light- and dark-coloured clays and shales. In places where the beds have been...them, but they probably belong to the Tertiary. ' A lignite horizon, with one or more seams, occurs in this formation at a number of widely separated points,... | |
 | Philip Creveling Warman - 1903 - 728 Seiten
...conglomerates, alternating with light and darkcolored clays and shales. In places where the beds have Ы4-n strongly folded the clays and sands are altered into...Brooks, AH, Coal resources of Alaska: Twenty-second Ann. 6ept. US Geol. Survey, pt. 3, p. 559. Mbirt. сMcComu'll, R. П., A summary report of the Cicol. Survey... | |
 | 1901 - 1234 Seiten
...slightly coherent sandstones and con- ^ lll;"" (l'sglomerates, alternating with light- and dark-coloured clays and shales. In places where the beds have been...them, but they probably belong to the Tertiary. ' A lignite horizon, with one or more seams, occurs in this formation at a number of widely separated points,... | |
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