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Encyclopedia Britannica - Main :: NUM-ORC |
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OHIO Permian. Dunkard formation . . . Pennsylvanian. Monongahela formation .. Conemaugh formation . . Alleghany formation . . . Pottsville conglomerate .. Unconformity. Mississippian. Maxville limestone . . . Waverley series Logan group . . . . Black Hand conglomerate . Cuyahoga shale . . . . Sunbury shale . . . . Berea
Bedford shale . . . . Devonian. Ohio shale . . . . Olentangy shale . . . . Delaware
Silurian
Monroe formation . . . Niagara group . . . . Clinton limestone . . Medina shales (?) . . . (Belfast bed.) Conway schist Amherst schist }5000 Brinfield fibrolite-schist Goshen schist 2000 Unconformity. Ordovician. Hawley schist 2000 ft. (?) Devonian. Bernardston series .. Unconformity. Silurian
Leyden argillite 300 ft. 1950 ft. (?) (?) ?) (?) (?) Canaan formation Greenbrier limestone Pocono sandstone Devonian. Hampshire formation Jennings formation Romney
Unconformity. Monterey sandstone Silurian. Lewiston limestone Rockwood formation Cacapon sandstone Tuscarora quartzite Juniata formation Ordovician. Martinsburg shale Middle and Upper Cambrian. Pugh formation Pickens sandstone Unconformity. Mississippian. Braxton formation Upshur sandstone . . 700 ft. . . 300 500 . . 300450 ,, . . 4005O0 . . I0001300 ft. . . 350 400 . . 70 90 . . 15001800 ft. 30003800 . . 10001300 . . go 200 ft. . . 5501050 ft. . . Loo 800 . . 100 63o . . 30 300 . . 2051250 . . 8001800 ft. . . . . C. 25 ft. . . . . 200 250 ft. . . . . 400 500 . . . . 165 300 . . . . 250 . . C. 25 ft. . . . . Pao 150 ft. . . . .. 50 500 . . . . 150 300 . . . . 5 30 ,, . . . . 5 195 . . . . 50 150 . . . . 3002600 ft. . . . . .20 35 . . . . 30 40 . . . . Ito ,, . . . . 50 600 ft. . . . . 150 350 . . . 10 50 . . . . 50 150 Ordovician. Saluda beds 2o= ft. Richmond formation 300 * Lorraine formation 300* Eden (Utica) shale 250 Trenton limestone 130 IOWA Glacial drift. Unconformity. Upper Cretaceous. Benton formation o- 150 ft. Dakota formation 50- too Unconformity. Pennsylvanian. Missouri formation 1500 it. Des Moines formation 250- 400 Unconformity. Mississippian. St Louis limestone too ft. Osage (Augusta) formation 200- 300 Kinderhook formation 150- 200 Devonian. Lime Creek formation State Quarry beds 20- Sweetland Creek shales 20-Unconformity. Cedar
Wapsipinicon formation (Independence, Fayette, Davenport) too- 15o Silurian. Anamosa limestone 50- 75 ft. Le Claire limestone 5o Delaware
Ordovician. Maquoketa shales 175 ft. Possible Unconformity. Galena-Trenton limestone 290 ft. St Peters sandstone too Oneota formation (includes Shakopee, New Richmond and Oneota proper) 300 Cambrian. St Croix sandstone (= Potsdam) . Unconformity. Proterozoic. Sioux quartzite. . . . (?) This section is fairly representative for much of the central Mississippi Basin. OKLAHOMA Pennsylvanian. (Summit removed by erosion.) Seminole conglomerate 5o ft. Holdenville shale 26o Wewaka formation 700 Wetumka shale 120 Calvin sandstone 145- 240 Senora formation 140- 485 Stuart shale 90- 280 Thurman sandstone 8o- 26o Boggy shale 2000-2600 Savannah sandstone 750-1100 McAlester
Hartshorne sandstone 150- 200 Atoka formation (Chickahoc chert lentil
Wapanucka limestone too- 15o Mississippian. Caney shale 1500 ft. Devonian. Woodford chert 600 ft. Silurian. Hunton limestone 16o ft. Sylvan shale (upper part) 50- too Ordovician. Sylvan shale (lower part) 250 ft. Viola limestone 750 ,, Simpson
1600 Arbuckle limestone 4000--6000 Cambrian. Regan sandstone -- 50- Too ft. Unconformity. Pre-Cambrian. Tishomingo granite . . . (?) Composite section. The upper part is taken from vicinty of Coalgate, the lower part from the vicinity of Atoka. End of Article: OHIO If you wish, you can link directly to this article.
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