Bulletin of the United States Geological SurveyThe Survey., 1903 |
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Alaska Alfred H Analysis of coal Ash Per cent bituminous coal Blatchford bluffs Brooks Carboniferous Circle province clay Cliff Creek coal bed Coal Creek coal field coal mines Coal resources coal seams coal-bearing rocks conglomerates Dawson deposits distance Drew E. T. Allen Eagle Eocene feet Fixed carbon Ash Fort Yukon Fortymile fossil fossil plants fresh-water Geological Survey international boundary Kaltag Kenai series Klondike River Kotzebue Sound Koyukuk rivers lignite limestones locality lower Melozi miles below Nulato Minook Creek mouth Nation River Nulato outcrop Permian Pickart coal Pleistocene probably Rampart province Rampart series reconnaissance reported Rept resources of Alaska river bank river steamers sandstone Schrader Seventymile River shales Slightly coherent Spurr stratigraphic Sulphur Fuel ratio Tanana thickness Tramway Bar tributary tunnel Twenty-first Ann Twenty-second Ann U. S. Geol unconformably Upper Cretaceous Volatile combustible matter W. E. Williams Washington Creek writer Yukon coal Yukon River Yukon silts
Beliebte Passagen
Seite 21 - Coal resources of Alaska: Twenty-second Ann. Rept. US Geol. Survey, pt.
Seite 22 - ... 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 in 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, and apparently accompanies it throughout its whole extent. Seams of lignite outcrop on Rock creek...
Seite 22 - 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 in them, but they probably belong to the Tertiary.
Seite 48 - Schrader, FC, A reconnaissance In northern Alaska: Prof. Paper US Geol. Survey No. 20...
Seite 12 - A reconnaissance from Pyramid Harbor to Eagle City, Alaska, including a description of the copper deposits of the upper White and Tanana rivers. In Twenty-first Ann. Kept., pt, 2, 1900, pp. 331-391. A reconnaissance in the Tanana and White River basins, Alaska, in 1898.
Seite 23 - Company has taken up a block of coal lands on Coal Creek, and has commenced mining operations at a point a little over 7 miles from Klondike River, following Coal Creek and Rock Creek valleys, and about 20 miles from Dawson. * * * The workings of the mine consist of an incline...
Seite 58 - Report on coal and lignite of Alaska: Seventeenth Ann. Rept. US Geol. Survey, pt. 1, 1896, pp.