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acid appears associated atlas basins bedding belt bowlders branch Brandywine Bryn Mawr central Chester creek clay cleavage close coal colored geological Concord conglomerate corner cross Crum creek crystals cuts Darby creek dark decomposed Delaware county deposits east edge Edgmont escarpments exposed exposures extends feldspar feldspathic feldspathic gneiss Ferruginous Field formation garnet Glen gneiss is exposed granitic gravel gray Green Hill hornblendic gneiss indications Kaoline land limestone locality Marple masses mica schist micaceous gneiss Middletown Mills Minerals north-west northern numerous numerous exposures occupied occurs oxide Philadelphia pike places Plate portion postage $0 Price $0 principal probably quarry quartz Radnor railroad Report Ridley creek river road leading rock sandstone schists and gneisses serpentine sheets ship short distance similar slaty small area south township line south-west southern station steatite SURVEY syenite throughout town township line trace usually vicinity visible West Chester White
Seite 5 - NORTHUMBERLAND counties, (i e., the parts lying outside of the anthracite coal fields), by IC White. With a colored geological map of these counties (in two sheets), and 31 page plates in the text. 8°, pp.
Seite 5 - With a colored geological county map, 2 folded plates and 2 page plates of sections. 8°, pp. 121, 1880. G 4. Report on CLINTON county, by HM Chance, including a description of the Renovo coal basin, by CA Ashburner, and notes on the Tangascootac coal basin, by F. Platt. With a colored geological county map, 1 sheet of sections, local Renovo map, 6 page plates, and 21 sections in the text. 8°, pp.
Seite 3 - Buffalo Coal Company tract, Alton coal basin, and Potato Creek coal basin ; map of McKean oil district ; one sheet of columnar sections between Bradford and Ridgway ; and 2 diagram sheets of the Well account and Production account in the Bradford district.
Seite 4 - R 2, for descriptions of oil rocks in McKean, Elk, and Forest counties. See V, V 2, for notes on the oil rocks of N. Butler and Clarion counties. See H 2 for oil boring at Cherry Tree, Cambria county. See G 5 for oil boring in Wayne county.
Seite 4 - 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 1 - X 32"), as follows: 13 sheets Atlas Southern Anthracite Field, Part I, 11 sheets Atlas Western Middle Anthracite Field, Part I, 1 sheet photo views of plaster models in Western, Middle and Southern Fields, and 1 specimen sheet, Report A 2. GRAND ATLAS, Div. II, Pt. II, 1885. Port-folio containing 22 sheets, (26...