. Jefferson, Berkeley, and Morgan counties, by Grimsley, assistant geologist. White, state geologist. orth, but at this place there is a sag or synclinal bendin the strata parallel to the strike. The ledges outcroppingup this cliff vary in texture, color, and chemical of the ledges are slaty, others very compact and hard,while others are quite granular. The stone blasts out in largeangular blocks and most of it is quite brittle. Certain ledgescarry fossil gasteropods and shells of brachiopods which cor-relate this portion of the limestone with the Middle StonesRiver
. Jefferson, Berkeley, and Morgan counties, by Grimsley, assistant geologist. White, state geologist. orth, but at this place there is a sag or synclinal bendin the strata parallel to the strike. The ledges outcroppingup this cliff vary in texture, color, and chemical of the ledges are slaty, others very compact and hard,while others are quite granular. The stone blasts out in largeangular blocks and most of it is quite brittle. Certain ledgescarry fossil gasteropods and shells of brachiopods which cor-relate this portion of the limestone with the Middle StonesRiver Formation. Some of the ledges are very low in silicawhile others run as high as 2 per cent. The lime carbonatevaries from 91 to nearly 99 per cent. The average of a largenumber of analyses made by some of the steel companies isabout per cent, silica for the cliff exposure. This tract at the river is now controlled by the PittsburghLimestone Company, a subsidiary organization of the Car-negie Steel Company, which has opened a number of quarriesalong the cliff, graded for track and plant, and laid quarry. ej SO Q X HH<1 WEST VIRGINIA GEOLOGICAL SURVEY. 449 tracks. The company plans to work to an average output ofa million tons a year, or 60 to 70 cars a day. The property isreached by a branch from the Western Maryland Railroadfrom Charlton, crossing the river about a half mile above thequarry. The track was completed to the river on the Mary-land side and the bridge piers completed in 1914 and part ofthe grade completed on this side, and completed to the quarryin the fall of 1915. Chemical Composition.—The following analyses of thislimestone were made by the late Mr. S. W. Shoop, of Altoona,in 1905: No. 1 No. 2 No. 3 No. 4 Silica Lime carbonate Magnesium carbonate Alumina No. 1 was of the dolomite forming the east wall of the high-grade 2 was at back end of cavern at Indian Church, 150 fe
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectgeology, bookyear1916
