Transactions . n. Some smallseams of this horizonalso occur near head ofWhite river. Mississippian. Bituminous. Near Cape Lewis, 20miles south of Cape Lisburne. The oldest coal of the Territory, belonging to the Mississip-pian subdivision of the Carboniferous (Lower Carboniferous),has been recently found by Mr. Arthur J. Collier,1 of the UnitedStates Geological Survey, along the Arctic coast south of CapeLisburne. Mr. A. G. Maddren2 was the first to suggest a Car-boniferous age for these coals. This discovery of Carbonifer-ous coal on the Pacific slope is not only of scientific import,but may
Transactions . n. Some smallseams of this horizonalso occur near head ofWhite river. Mississippian. Bituminous. Near Cape Lewis, 20miles south of Cape Lisburne. The oldest coal of the Territory, belonging to the Mississip-pian subdivision of the Carboniferous (Lower Carboniferous),has been recently found by Mr. Arthur J. Collier,1 of the UnitedStates Geological Survey, along the Arctic coast south of CapeLisburne. Mr. A. G. Maddren2 was the first to suggest a Car-boniferous age for these coals. This discovery of Carbonifer-ous coal on the Pacific slope is not only of scientific import,but may have far-reaching economic significance. It should benoted, however, that this terrane is much older than those of 1 Report on Progress of Investigations of Mineral Resources of Alaska in 1904,Bulletin No. 259, U. S. Geological Survey (1905). 2 A Reconnaissance in Northern Alaska, by F. C. Schrader, Professional PaperNo. 20, U. S. Geological Survey, pp. 113-114 (1904). 494 THE OUTLOOK FOR COAL-MINING IN Fig. 1.—Map of Alaska Showing the Distribution of the Coal-Bearing Kocks so Far as Known. THE OUTLOOK FOR COAL-MINING IN ALASKA. 495 the coal-measures of the eastern United States. The coal occursin a series of shales and slates, with some limestones, probably1,000 ft. thick, which is thrown up into broad, open folds. JSTocoal-seams of lower Carboniferous are known elsewhere inAlaska. Coal has been found in association with Permian rocks inonly two localities in Alaska and neither give promise of hav-ing value. A little mining has been done on a coal-seam out-cropping on the Nation river, a northerly tributary of theYukon river, 52 miles below the Boundary. Mr. Collier3 de-scribes the rocks, in immediate association with this coal, asconglomerates and shale, while close at hand are limestonescarrying a Permian marine fauna. The folding, which is verycomplex, is accompanied by faulting, and the relation of thetwo series has not been established. Near the InternationalB
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