Andere Ausgaben - Alle anzeigen
Häufige Begriffe und Wortgruppen
20 feet Allegheny formation Allegheny Front Allegheny river aluminum tablet stamped anthracite anticline Atlas basin Beaver bench Big Injun bituminous bridge Brookville Burgettstown Cambria county cent Clarion Clarion county Clearfield county coal bed coal measures colored geological contour creek deposited district drilled Dunkard elevation feet east feet north feet south feet southwest feet thick feet west Fifth sand flint clay folio Gantz gas field gas pool Geological Survey Gordon Greene county Hill horizon Houtzdale Hundred-foot iron J. J. Stevenson Latitude limestone Longitude Lower Kittanning coal Mahoning McCreath Middle Kittanning miles northeast mined northwest Ohio oil and gas outcrop peneplain Pennsylvania Railroad Pittsburg coal Plate Pottsville producing quadrangle quarried railroad region river road crossing rocks sandstone Sewickley shale shaly sheets shows southeast corner station stone stratigraphy structure syncline thin Uniontown Upper Freeport coal Upper Kittanning usually Valley Vanport Washington Waynesburg western Pennsylvania workable
Beliebte Passagen
Seite 92 - Ashburner, geologist in charge. (AA.) ATLAS OF SOUTHERN anthracite field, Part I, containing 13 sheets; 3 geological and mine sheets, 3 cross section sheets, 3 columnar section sheets, 1 topographical map sheet, and 1 coal bed area sheet, relating to the PANTHER CREEK BASIN ; 1 general map of the anthracite region, and 1 chart of anthracite production from 1820 to 1881. 8°, 1882.
Seite 15 - And it is hereby provided that said map shall accurately show the outlines of all townships, counties and extensive wooded areas in this State, as existing on the ground at the time of the execution of these surveys; the location of all roads, railroads, streams, canals, lakes and rivers, and shall show by contour lines the elevation and depression of the surface of the country, also location of coal, oil, natural gas and clay bearing formations.
Seite 52 - The former are determined by lines of levels run either in both forward and backward directions or by simultaneous double-rodded lines, a highgrade instrument being used and special precautions being taken in observations and reduction to correct errors and make the line continuously good throughout. The latter or primary levels are determined with the Y level, precautions being taken against only the principal errors and the levels being run mostly in circuits of single lines. The allowable limit...
Seite 52 - ... inches in outer diameter, split at the bottom and • expanded to 12 inches, so as to prevent both .the easy subsidence of the post and its being maliciously pulled out of the ground. The iron is heavily coated with asphalt, and over the top of the post is riveted a bronze tablet similar to that described above. "The...
Seite 93 - I, containing 6 geological and mine sheets between Wilkes-Barre and Nanticoke, 3 cross section sheets and 4 columnar section sheets. 8°, 1885. Charles A. Ashburner, geologist in charge ; Frank A. Hill, assistant geologist. (AA. ) ATLAS OF NORTHERN anthracite field, Part II, containing 10 sheets ; 4 mine sheets relating to that portion of the Wyoming-Lackawanna coal basin between Wyoming and Taylorville, and 2 topographical and mine sheets relating to the extreme western end of the Wyoming basin...
Seite 94 - Atlas of 22 sheets. Map of Venango county, colored geologically ; map of lower oil field (Butler, Armstrong, and Clarion) in two sheets; 3 local contour maps at Franklin, Titusville and Spring Creek ; two maps of NW Pennsylvania, showing the past and present drainage ; long section across W. Pennsylvania ; vertical section of the formations from the Upper Coal measures down to the bottom of the Devonian ; diagram map and section of Third sand; profile section from Meadville, SW ; 5 sheets of grouped...
Seite 16 - Commissioners shall be furnished by the United States Geological Survey with photographic copies of the manuscript sheets; and, when the engraving...
Seite 16 - For office work on the map the salaries shall be divided between the two agreeing parties in such a way as to equalize all expenses, provided...
Seite 96 - Q 3, Q 4, for references to oil rocks in Beaver, Lawrence, Mercer, Crawford, Erie, and S. Butler counties. See K for the Dunkard Creek oil wells of Greene county. See R, R 2, for descriptions of oil rocks in McKean, Elk, and Forest counties.
Seite 95 - November, 1884, in advance of the report) :— 3 colored geological county maps; 1 anticlinal and synclinal map; 1 topographical map McKean county; 2 tract maps Forest and Elk counties; 1 map Straight Creek coal basin; 2 sheets oil well sections; and 1 sheet coal sections.