Topographic and Geological Survey of PennsylvaniaCommission, 1908 - Geology |
Common terms and phrases
20 feet Allegheny formation Allegheny Front Allegheny river aluminum tablet stamped anthracite anticline Appalachian Atlas basin Beaver bench Big Injun Burgettstown Cambria county carbon cent Clarion Clarion county Claysville Clearfield county coal bed coal measures colored geological contour corner creek deposited district drilled Dunkard elevation Fayette feet thick Fifth sand flint clay folio Gantz gas fields gas pools Geological Survey Gordon Greene county Hill horizon Houtzdale Hundred-foot I. C. White inches thick Interval iron J. J. Stevenson Johnstown limestone Lower Kittanning coal Mahoning McCreath Middle Kittanning miles mined Monongahela northeast northwest Ohio oil and gas oil pool outcrop peneplain Pittsburg coal Plate Pottsville producing Punxsutawney quadrangle quarried railroad region river road rocks sandstone Sewickley shale shaly sheets southeast southwest station stone stratigraphy structure syncline thin Uniontown Upper Freeport coal Upper Kittanning usually Valley Vanport Washington Waynesburg Waynesburg coal western Pennsylvania workable
Popular passages
Page 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.
Page 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.
Page 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...
Page 268 - All the data of a single class has been put upon a single chart and grouped with other facts to determine their relations. Already certain relationships seem to be coming out as a result of these studies and others are dimly foreshadowed. The great bodies of facts are awaiting the acquisition of more facts before they will fall into groups. This need of more facts is emphasized by Mr. Munn's paper which follows: GHA The quadrangles in which geologic work has been done by the State Survey in co-operation...
Page 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...
Page 52 - ... generally in the vertical walls of public buildings, bridge abutments, or other substantial masonry structures. The second form, employed where masonry or rock is not accessible, consists of a hollow...
Page 15 - The preliminary field maps shall be on such a scale as said Director shall select to secure accuracy in the construction of the final map. 5. It is understood and agreed upon that the geological work shall follow the topographic survey as closely as consistent with economy and in accordance with modern scientific methods. The time of beginning this work to be agreed upon between the State Survey Commission of Pennsylvania and the United States Geological Survey.
Page 97 - MONROE counties, by IC White. With two colored geological county maps, (1 sheet Pike and Monroe, and 1 sheet Wyoming,) a map of glacial scratches, and 7 small sections. Report on the Delaware and Lehigh water gaps, with two contoured maps and five sections of the gaps, by HM Chance.
Page 96 - LEHIGH county iron mines, by F. Prime. With a contour line map of the ore region and 8 page plates. 8°, pp. 73, 1875.
Page 16 - Commissioners may, on formal notice, terminate this agreement. 9. The resulting maps shall fully recognize the co-operation of the State of Pennsylvania.