Online Encyclopedia

OHIO

Online Encyclopedia
Originally appearing in Volume V27, Page 631 of the 1911 Encyclopedia Britannica.
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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 grit . . . . Bedford shale . . . . Devonian. Ohio shale . . . . Olentangy shale . . . . Delaware limestone . . . Columbus limestone . . . 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 shale 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 „ . . 300–450 ,, . . 400–5O0 „ . . I000–1300 ft. . . 350– 400 „ . . 70– 90 „ . . 1500–1800 ft. 3000–3800 „ . . 1000–1300 „ . . go– 200 ft. . . 550–1050 ft. . . Loo– 800 „ . . 100– 63o „ . . 30– 300 . . 205–1250 . . 800–1800 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 „ . . . . 300–2600 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 Valley limestone 250- 300 ft. Wapsipinicon formation (Independence, Fayette, Davenport) too- 15o „ Silurian. Anamosa limestone 50- 75 ft. Le Claire limestone 5o „ Delaware stage 200 „ Unconformity. 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 shale 1150-1500 „ Hartshorne sandstone 150- 200 „ Atoka formation (Chickahoc chert lentil) . 3200 „ 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 series 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.
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