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alternating analysis anticlinal argillaceous Aughwick bank Blacklog blue bottom Broad Top brown calcareous Carbonate clay Clinton coal color Concealed conglomerate containing continues creek crest crosses Danville dark distance Ditto driven east exist exposed fault feet thick ferruginous foot formation formed fossil fossiliferous Furnace gangway gray gray sandstone green hard hematite inches thick iron Jack's mountain Jacks Juniata layers Lewistown lime shale limestone Logan lower Marcellus massive measures Medina middle miles mined mountain occurs olive olive shale opened Orbisonia ore-bed outcrop quantity range ravine red shale ridge river road rock Saltillo Sand Vein sandstone sandy seams shaly shows side Sideling Hill silicious slate slope soft specimen stone strata Sulphur surface Survey synclinal terrace thin Three Springs tunnel Union upper Valley yards yellow
Seite 301 - Copies of the Reports, with all maps and supplements, shall he donated to all public libraries, universities, and colleges in the State, and shall be furnished at cost of publication to all other applicants for them.
Seite 198 - Feet. 2133 0 212 (Partly concealed.) Composed, for the most part, of hard, coarse-grained, massive, brownish-gray and gray sandstone, alternating with thinly bedded and flaggy sandstone, and shale of the
Seite 204 - ... of false bedding. The thicknesses are very variable, in places increasing from 1 and 2 inches up to 10 inches and 1 foot ; and sometimes -a seam will be very much broken up and separated by a mass of sandstone, which splits the bed for some distance, but afterwards disappears, permitting the several portions to unite again.
Seite 204 - The thicknesses are very variable, in places increasing from 1 and 2 inches up to 10 inches and 1 foot ; and sometimes a seam will be very much broken up and separated by a mass of sandstone, which splits the bed for some distance, but afterwards disappears, permitting the several portions to unite again. The almost total absence of fireclays under the coal seams, and the occurrence of coarse sandstone in many places...
Seite iv - ANDREW SHERWOOD — Geologist in charge of the Survey of Bradford, Tioga, Potter, Lycoming, Sullivan, and Wyoming. FA GENTH— Chemist and Mineralogist at Philadelphia. AS McCREATH — Chemist, in charge of the Laboratory ot the Survey, 223 Market street, Harrisburg.
Seite 198 - Massive gray sandstone surfaces coated with ferric oxide 8' 210. Alternating massive gray and greenish-gray sandstone containing a twelve inch seam of black slate showing impressions of minute plants 22' Middle member, upper part. (New River Coal Series). 209. Massive gray sandstone containing thin partings of coal. 29
Seite 249 - Levant white sandstone, at a point where there is a slight indentation in the crest of the mountain.
Seite 253 - Palaeozoic rocks, exposed in Blair County, was made by compiling the sections taken from the following points : From the summit of the Allegheny Mountain at Bennington along the Pennsylvania Railroad to Altoona for XII, XI, X, IX, and VIII.
Seite 198 - Soft greenish-gray micaceous shale 1'3" 205. Light gray, massive sandstone containing thin plates of coal and micaceous specks 56' 204. Sandstone containing thin partings of coal 1' 203. Soft, loose sandstone containing seams of coal, running irregularly through the mass, amounting in all to about 5 inches 6