Matthew S. Erenpreiss Department of Natural Resources, Division of Geological Survey Mapping the Regional Organic Thickness of the “Marcellus ,” Hamilton [email protected] 2045 Morse Rd., Bldg. C-2, Columbus, OH 43229-6693

ABSTRACT • Regional and statewide isopach maps Shale” in each county and township, where available; this newly compiled data and observing the “Marcellus ASHTABULA REFERENCES WILLIAMS FULTON LUCAS

OTTAWA LAKE GEAUGA WOOD Lash, G.G., and Engelder, Terry, 2011, Thickness HENRY TRUMBULL have been developed for the Middle “Marcellus this approach allowed for an even distribution of control Shale” upper and lower units, net organic thickness SANDUSKY CUYAHOGA DEFIANCE ERIE LORAIN trends and sequence of the Middle PORTAGE HURON SUMMIT Devonian , Appalachian Basin— PAULDING SENECA MEDINA Shale” for use in assessing Ohio’s potential. points and more consistent correlations. This correlation was calculated and contoured. Additional data was also PUTNAM HANCOCK MAHONING Implications for Acadian evolution:

VAN WERT WYANDOT CRAWFORD RICHLAND ASHLAND WAYNE AAPG Bulletin, v. 95, no. 1, p. 61–103. Existing stratigraphic analyses of Devonian in Ohio expansion of the , “Marcellus Shale,” collected from the state geological surveys of , ALLEN STARK COLUMBIANA Ohio Division of Geological Survey, 1988, Analysis of HARDIN MERCER CARROLL stratigraphic and production relationships of Devonian MARION AUGLAIZE HOLMES MORROW TUSCARAWAS shale gas reservoirs in Ohio–Final report October were used as the starting dataset, which was expanded and Onondaga was based on U.S. Geological , and West to create a new regional LOGAN KNOX SHELBY UNION JEFFERSON COSHOCTON HARRISON DELAWARE 1985–November 1988 (prepared for Gas Research DARKE A’ Institute): Ohio Department of Natural Resources, CHAMPAIGN LICKING with additional geophysical logs that span the “Marcellus Survey cross sections published in Bulletin 1909. Using map of organic thickness of the “Marcellus Shale.” GUERNSEY MIAMI MUSKINGUM BELMONT FRANKLIN Division of Geological Survey, 49 p., 15 pl. MADISON B CLARK Pennsylvania Geological Survey, [2010], Net feet of PREBLE FAIRFIELD MONTGOMERY PERRY NOBLE MONROE organic-rich shale in the Middle Devonian Marcellus GREENE PICKAWAY MORGAN Formation in Pennsylvania: Pennsylvania Department FAYETTE B’ BUTLER WARREN HOCKING WASHINGTON CLINTON of Conservation and Natural Resources, Bureau of ROSS ATHENS HURON COUNTY PERTH COUNTY WATERLOO REGIONAL MUNICIPALITY FULTON WAS HINGTON Topographic and Geologic Survey, map, last accessed SANILAC ORLEANS HAMILTON-WENTWORTH REGIONAL MU SARATOGA HIGHLAND VINTON OXFORD COUNTY NIAGARA WAY NE ONEIDA HAMILTON September 21, 2011, at . GENESEE MADISON A MIDDLESEX COUNTY RENSSELAER BROWN ADAMS GALLIA Roen, J.B., and Kepferle, R.C., 1993, geology SCIOTO LAPEER ST. CLAIR of the Devonian and black shale of SENECA CAYUGA LAMBTON COUNTY HALDIMAND-NORFOLK REGIONAL MUN NIAGARA REGIONAL MUNICIPALITY ALBANY OTSEGO SCHOHARIE eastern : U.S. Geological Survey LAWRENCE ELGIN COUNTY WYOMING ERIE YATE S CORTLAND CHENANGO Bulletin 1909. MACOMB LIVINGSTON 5 TOMPKINS Geological Survey, 2010, Thickness/ 7 5 0 COLUMBIA isopach map (lines)—Marcellus Shale, West Virginia: 5 GREENE FIGURE 1.—Three “Marcellus” type logs from across Ohio. SCHUYLER 22 AKLAND 0 10 5 Morgantown, West Virginia Geological and Economic KENT COUNTY 12 0 DELAWARE WAY NE 15 Some areas of the state only have a single unit just above FIGURE 2.—Map of Ohio showing geographi- 17 Survey, vector digital data, last accessed September STEUBEN 20 ALLEGANY BROOME 25 CATTARAUGUS TIOGA 250 CHEMUNG the , while others have multiple cally the two sections A–A' and B–B', shown in 21, 2011, at . ESSEX COUNTY 50 ULSTER “Marcellus” units, some bifurcated and others continuous. fi gures 3 and 4 below. DUTCHESS ERIE 7 SUSQUEHANNA 0 5 BRADFORD SULLIVAN WARREN MCKEAN 25 WAY NE POTTER TIOGA

ASHTABULA 0 PUTNAM LAKE CRAWFORD WYOMING ORANGE 50 A A' FOREST SULLIVAN 0 CAMERON PIKE WESTCHESTER OTTAWA GEAUGA LACKAWANNA ELK LYCOMING CUYAHOGA VENANGO 10 TRUMBULL ROCKLAND ERIE CLINTON SANDUSKY LUZERNE LORAIN 25 MERCER 100 MONROE CLARION PORTAGE JEFFERSON COLUMBIA SUFFOLK HURON BRONX SENECA MEDINA SUMMIT MONTOUR CLEARFIELD UNION LAWRENCE MAHONING 5 CENTRE QUEENS BUTLER 750 7 NORTHAMPTON KINGS NDOT SCHUYLKILL ARMSTRONG SNYDER RICHMOND CRAWFORD ASHLAND WAY NE 1000 LEHIGH RICHLAND STARK 25 COLUMBIANA NORTHUMBERLAND 25 MARION INDIANA MIFFLIN JUN IATA BEAVER ALLEGHENY CARROLL HANCOCK BERKS HOLMES 50 CAMBRIA BUCKS MORROW 0 BLAIR DAUPHIN JEFFERSON 75 PERRY LEBANON 10 KNOX TUSCARAWAS 0 HUNTINGDON MONTGOMERY 10 WESTMORELAND COSHOCTON HARRISON DELAWARE CUMBERLAND PHILADELPHIA BROOKE WASHINGTON 5 LANCASTER 7 CHESTER LICKING OHIO DELAWARE FIGURE 3.—Section A–A' shows how the “Marcellus Shale” thickens moving north along the and how it can have bifurcated units in some areas. GUERNSEY 0 BEDFORD BELMONT 0 YORK FRANKLIN FULTON FRANKLIN 5025 0 50Mile s

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