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Looking south from Cobham Hill over surface of the dissected Harrisburg peneplain. Shows the even skylines due to peneplanation. Warren County, Pennsylvania. 1909. Figure 4 in U.S. Geological Survey. Folio 172. 1910.
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Brierfield dolomite incrusted with characteristic fretwork of residual silica. Sixmile Creek about 1 mile northwest of the southwest corner of the Montevallo quadrangle. Bibb County, Alabama. 1924. Plate 6 in U.S. Geological Survey. Folio 226. 1940.
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Southeast down Juniata River valley across Huntingdon, high point in distance on right formed by the convergence of Terrace Mountain and Sideling Hill on the axis of the Trough Creek syncline; Crest of Jacks Mountain on left. Huntingdon County, Pennsylvania. 1924. Plate 5 in U.S. Geological Survey. Folio 227. 1945.
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Characteristic hilly topography of the Knox dolomite areas, crest of Red Mountain, composed of the Clinton formation in the distance, looking east from highway about 1 mile south Pinson. Jefferson County, Alabama. 1910. Plate 3 in U.S. Geological Survey. Folio 175. 1910.
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Dike like outcrop of vertical Hartselle sandstone member 1.5 miles east of Newcastle, looking north. This feature extends north to Pinson and is called Rocky Row. Jefferson County, Alabama. 1910. Plate 10 in U.S. Geological Survey. Folio 175. 1910.
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Anticline overturned to northwest, Louisville and Nashville Railroad, one-half mile south of Graces Gap. Jefferson County, Alabama. 1906. Plate 4-B in U.S. Geological Survey. Bulletin 400. 1910.
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Loyalhanna limestone resting on sandstone of the Pocono formation Allegripus, Blair County, Pennsylvania. 1904. Plate 7-A in US. Geological Survey. Bulletin 249. 1905.
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Stewart washer of Central Iron and Coal Company at Kellerman, Tuscaloosa County, Alabama. 1906. Plate 16-A in U.S. Geological Survey. Bulletin 400. 1910.
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Brallier shale, these thick beds are thinly laminated and break down into thin chips on weathering. Cut on Pennsylvania railroad about half a mile east of Huntingdon, looking north. Huntingdon County, Pennsylvania. 1924. Plate 20 in U.S. Geological Survey. Folio 227. 1945.
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Shale in Gasper formation with overlying Hartselle sandstone, Red Gap, just east of Gate City, northeast environs of Birmingham, the Red Gap fault, on which the movement causing the earthquake in 1914 took place, is near and along the highway. Jefferson County, Alabama. 1925. Plate 19 in U.S.Geological Survey. Folio 221. 1927
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Prospect for roofing slate in Waxahatchee slate: three fourths of a mile south of Ocampo, looking north. Chilton County, Alabama. 1924. Plate 4 in U.S. Geological Survey. Folio 226. 1940.
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Cavernous silica from Bibb dolomite: characteristic-weathering product from the Brierfield and Bibb dolomite. Alabama. 1924. Plate 7 in U.S. Geological Survey. Folio 226. 1940.
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Bed of volcanic ash (bentonite) in Chickamauga limestone at Twentieth Street, Birmingham, near summit of Red Mountain on west side, looking east; the bentonite is a yellowish clay between the two prominent layers of limestone. Jefferson County, Alabama. 1925. Plate 17 in U.S.Geological Survey. Folio 221. 1927.
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Ketona dolomite member of the Knox dolomite in quarry at north Birmingham, looking south. Jefferson County, Alabama. 1910. Plate 2 in U.S. Geological Survey. Folio 175. 1910.
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Iron ore diggings at Shelby. Ore is in pockets in decayed rock, which is reported to extend nearly 100 feet below the bottom of the pit. The clay seems to be fill and ancient sink hole. Shelby County, Alabama. 1924. Plate 15 in U.S. Geological Survey. Folio 226. 1940.
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Looking northwest across Shelby Valley, eroded mainly on Newala limestone Columbiana Mountain in the distance. Plate 2 in U.S. Geological Survey. Folio 226. 1940.
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Shriver limestone; railroad cut south end of Bald Hill 1 mile east of Holidaysburg, looking northeast. Blair County, Pennsylvania. 1924. Plate 16 in U.S. Geological Survey. Folio 227. 1945.
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Chemug formation, showing alternating thin shale and sandstone layers; along road a short distance north of Hawn Bridge, in the northwestern part of the Huntingdon quadrangle, looking northeast. Huntingdon County, Pennsylvania. 1924. Plate 21 in U.S. Geological Survey. Folio 227. 1945.
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Slope No. 7, Tennessee Coal, Iron and Railroad Company); plateau of the Warrior coalfield in distance, beyond Jones Valley.
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Boulder of dense tough chert characteristic of Copper ridge dolomite, from Newhope ridge, gorge of Buck Creek between Helena and Pelham. Shelby County, Alabama. 1925. Plate 3 in U.S.Geological Survey. Folio 221. 1927.


map background search result map search result map Loyalhanna limestone resting on sandstone of the Pocono formation Allegripus. Blair County, Pennsylvania. 1904. Shale in Gasper formation with overlying Hartselle sandstone, Red Gap, just east of Gate City. Jefferson County, Alabama. 1925. Dike like outcrop of vertical Hartselle sandstone member.  Jefferson County, Alabama. 1910. Characteristic hilly topography of the Knox dolomite areas, crest of Red Mountain. Jefferson County, Alabama. 1910. Looking south from Cobham Hill over surface of the dissected Harrisburg peneplain.  Warren County, Pennsylvania. 1909. Shriver limestone; railroad cut south end of Bald Hill 1 mile east of Holidaysburg, looking northeast. Blair County, Pennsylvania. 1924. Chemug formation, showing alternating thin shale and sandstone layers. Huntingdon County, Pennsylvania. 1924. Southeast down Juniata River valley across Huntingdon; Crest of Jacks Mountain on left. Huntingdon County, Pennsylvania. 1924. Brallier shale, these thick beds are thinly laminated and break down into thin chips on weathering.  Huntingdon County, Pennsylvania. 1924. Loyalhanna limestone resting on sandstone of the Pocono formation Allegripus. Blair County, Pennsylvania. 1904. Shriver limestone; railroad cut south end of Bald Hill 1 mile east of Holidaysburg, looking northeast. Blair County, Pennsylvania. 1924. Looking south from Cobham Hill over surface of the dissected Harrisburg peneplain.  Warren County, Pennsylvania. 1909. Chemug formation, showing alternating thin shale and sandstone layers. Huntingdon County, Pennsylvania. 1924. Southeast down Juniata River valley across Huntingdon; Crest of Jacks Mountain on left. Huntingdon County, Pennsylvania. 1924. Brallier shale, these thick beds are thinly laminated and break down into thin chips on weathering.  Huntingdon County, Pennsylvania. 1924. Shale in Gasper formation with overlying Hartselle sandstone, Red Gap, just east of Gate City. Jefferson County, Alabama. 1925. Dike like outcrop of vertical Hartselle sandstone member.  Jefferson County, Alabama. 1910. Characteristic hilly topography of the Knox dolomite areas, crest of Red Mountain. Jefferson County, Alabama. 1910.