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1 of 3—Evaluation of Sequestration Options for Deep Saline Formations

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ERA Geologic Formation Names and (SUB- SERIES

Informal AVAILABLE ROCK CORE SAMPLE SETS AVAILABLE ROCK CUTTINGS SAMPLE SETS BRINE DISPOSAL WELL INJECTION RATES BRINE CHEMICAL COMPOSITION DATA SYSTEM SYSTEM)

Formation Corresponding OCDO Formation Groups ABSTRACT Groupings

Monongahela Gp Formation Name OCDO Formation Group Pennsylvanian undifferentiated Pittsburgh coal Pennsylvanian undifferentiated UPPER Conemaugh Gp A comprehensive character- Conemaugh Gp Pennsylvanian undifferentiated ERIE ERIE ERIE ERIE Mitchell sand Pennsylvanian undifferentiated ASHTABULA Allegheny Gp Glenshaw Pennsylvanian undifferentiated ASHTABULA ASHTABULA LAKE ization of geologic sequestra- LAKE LAKE Peeker sand Pennsylvanian undifferentiated LUCAS LAKE LUCAS LAKE LAKE LAKE LUCAS Cow Run Pennsylvanian undifferentiated FULTON FULTON FULTON Pottsville Gp WILLIAMS WILLIAMS tion options in eastern Ohio Buell Run Pennsylvanian undifferentiated OTTAWA MIDDLE WILLIAMS OTTAWA OTTAWA Macksburg Pennsylvanian undifferentiated GEAUGA FORMATION GROUP GEAUGA FORMATION GROUP FORMATION GROUP FORMATION GROUP Macksburg 300 Pennsylvanian undifferentiated GEAUGA and the upper Ohio River Val- Sharon CUYAHOGA CUYAHOGA (PENNSYLVANIAN) TRUMBULL ss Coal Pennsylvanian undifferentiated WOOD CUYAHOGA Pennsylvanian undifferentiated Pennsylvanian undifferentiated Pennsylvanian undifferentiated Pennsylvanian undifferentiated SANDUSKY DEFIANCE WOOD SANDUSKY ERIE SANDUSKY ERIE Allegheny Pennsylvanian undifferentiated DEFIANCE ERIE HENRY DEFIANCE HENRY WOOD HENRY TRUMBULL TRUMBULL Cow Run 2 Pennsylvanian undifferentiated LORAIN undifferentiated LORAIN Mississippian undifferentiated Mississippian undifferentiated Mississippian undifferentiated

ley area is being developed by undifferentiated Pennsylvanian LORAIN

LOWER Dorr Run marine zone Pennsylvanian undifferentiated Berea Berea Berea Berea Washingtonville marine zone Pennsylvanian undifferentiated HURON PORTAGE shale and siltstones PORTAGE Devonian shale and siltstones Devonian shale and siltstones PORTAGE Devonian shale and siltstones the Ohio Geological Survey HURON PA UL DI N G HURON MEDINA Macksburg 500 Pennsylvanian undifferentiated PA U L D IN G SENECA MEDINA SUMMIT PA U L D IN G SENECA MEDINA SUMMIT SUMMIT Macksburg 700 Pennsylvanian undifferentiated MAHONING -Devonian "Big Lime" Silurian-Devonian "Big Lime" Silurian-Devonian "Big Lime" SENECA MAHONING Silurian-Devonian "Big Lime" Germantown sandstone Pennsylvanian undifferentiated PUTNAM PUTNAM MAHONING PUTNAM in cooperation with Battelle. Silurian "Clinton/Medina" Silurian "Clinton/Medina" Silurian "Clinton/Medina" HANCOCK Silurian "Clinton/Medina" Pottsville Group Pennsylvanian undifferentiated HANCOCK HANCOCK

UPPER shale and Trenton- Ordovician shale and Trenton- Maxville Pottsville Pennsylvanian undifferentiated CRAWFORD Ordovician shale and Trenton- Ordovician shale and Trenton- Ls This project is partially fund- Quakertown Coal Pennsylvanian undifferentiated VAN WERT Black River VAN WERT Black River Black River VAN WERT Black River CRAWFORD WYANDOT WYANDOT CRAWFORD WYANDOT ASHLAND STARK Number 2 Coal Pennsylvanian undifferentiated ASHLAND WAYNE STARK COLUMBIANA -Ordovician Knox ASHLAND WAYNE STARK Cambrian-Ordovician Knox Cambrian-Ordovician Knox Cambrian-Ordovician Knox ALLEN Brill Sand Pennsylvanian undifferentiated ALLEN ALLEN RICHLAND COLUMBIANA COLUMBIANA ed by the Ohio Coal Develop- & Cambrian pre-Knox* Precambrian & Cambrian pre-Knox* Precambrian & Cambrian pre-Knox* RICHLAND Precambrian & Cambrian pre-Knox* Sharon Pennsylvanian undifferentiated RICHLAND WAYNE Maxton Pennsylvanian undifferentiated HARDIN HARDIN HARDIN *Includes 14 Precambrian. *Includes 51 identified Precambrian cutting *Includes five Precambrian. *Includes one Precambrian. ment Offi ce (OCDO). Eastern MIDDLE Second Salt sand Pennsylvanian undifferentiated MARION MERCER MORROW CARROLL MARION CARROLL MARION HOLMES CARROLL Salt sand Pennsylvanian undifferentiated AUGLAIZE HOLMES MERCER AUGLAIZE HOLMES suites. 135 additional wells total depth in the MERCER AUGLAIZE

(MISSISSIPPIAN) Precambrian however do not have a bottom Mitchell Pennsylvanian undifferentiated MORROW MORROW Ohio is a crucial area in which † JEFFERSON DATA TYPE Logan Fm TUSCARAWAS Class I well formation identified in RBDMS. INJECTION RATE TUSCARAWAS KNOX TUSCARAWAS JEFFERSON Black Mississippian Undifferentiated Mississippian undifferentiated LOGAN KNOX Hand Mbr LOGAN KNOX bbls/inj. day LO GAN Mississippian undifferentiated Brine chemistry Cuyahoga Fm Upper Mississippian undifferentiated Mississippian undifferentiated OCDO AOR SHELBY SHELBY

carbon sequestration options Sh Coldwater LOWER UNION Maxville Mississippian undifferentiated SHELBY HARRISON COSHOCTON HARRISON UNION HARRISON Sunbury Sh COSHOCTON DELAWARE Class I well <75 DELAWARE COSHOCTON Water resistivity Logan Mississippian undifferentiated DELAWARE Berea Ss JEFFERSON must be fully explored so that Keener Mississippian undifferentiated Both data Berea DARKE UNION OCDO AOR 75–150 Bedford Sh Big Injun Mississippian undifferentiated CHAMPAIGN DARKE CHAMPAIGN DARKE CHAMPAIGN GUERNSEY Squaw Mississippian undifferentiated LICKING LICKING 150–300 LICKING stakeholders may understand MIAMI MIAMI MIAMI GUERNSEY MUSKINGUM Ohio Sh Weir Mississippian undifferentiated BELMONT GUERNSEY BELMONT Class I well Hamden Mississippian undifferentiated MUSKINGUM FRANKLIN MUSKINGUM 300–500 FRANKLIN BELMONT FRANKLIN OCDO AOR the potential options and costs UPPER Henley Shale Member Mississippian undifferentiated CLARK CLARK CLARK

Antrim Sh Java Fm Olentangy Sh Coffee Shale Mississippian undifferentiated MADISON MADISON West Falls Fm MONTGOMERY MONTGOMERY >500 of future carbon capture and Mississippian undifferentiated MADISON PERRY PREBLE FAIRFIELD PREBLE FAIRFIELD NOBLE † PREBLE MONTGOMERY FAIRFIELD Sunbury Berea PERRY MONROE PERRY MONROE Total volume divided by number of days MONROE Olentangy Sh GREENE GREENE PICKAWAY Berea Berea GREENE PICKAWAY of injection. MORGAN NOBLE storage technologies. The pri- and siltstones

Devonian shale Devonian NOBLE PICKAWAY Berea 2 Berea MORGAN MORGAN

Traverse Gp Bedford Berea FAYETTE FAYETTE FAYETTE Dun- Hamilton dee Delaware Ls Gp mary task is to compile, assim- DEVONIAN Gantz Berea Class I well MIDDLE Ls HOCKING HOCKING Columbus Marcellus HOCKING WASHINGTON WASHINGTON Detroit Thirty Foot Berea BUTLER WASHINGTON River Ls Sh BUTLER WARREN BUTLER WARREN WARREN Gp CLINTON CLINTON OCDO AOR CLINTON Onondaga Gordon Berea ilate, and interpret the most Ls Fifth Sand Berea ROSS ATHEN S ROSS ATHENS ROSS ATHENS Bois Blanc Fm Cuyahoga Devonian shale and siltstones VINTON current geologic data perti- HAMILTON VINTON VINTON HAMILTON HAMILTON Devonian Devonian shale and siltstones HIGHLAND HIGHLAND HIGHLAND Oriskany Ss Ohio Devonian shale and siltstones CLERMONT CLERMONT LOWER nent to CO2 sequestration for Member Devonian shale and siltstones MEIGS MEIGS PIKE MEIGS Helderberg Ls PIKE CLERMONT Little Cinnamon Devonian shale and siltstones PIKE JACKSON JACKSON Bass Islands Member Devonian shale and siltstones

PALEOZOIC Dol eastern Ohio. This project in- JACKSON Warren 1st Devonian shale and siltstones BROWN BROWN BROWN ÒBig LimeÓ Speechley Sand Devonian shale and siltstones ADAMS ADAMS cludes both deep saline forma- Silurian-Devonian Balltown Sand Devonian shale and siltstones SCIOTO GALLIA ADAMS GALLIA Salina Gp Huron Devonian shale and siltstones SCIOTO GALLIA SCIOTO Big Cinnamon Devonian shale and siltstones tions and oil and gas reservoirs Lower Huron Devonian shale and siltstones Ludlow-Pridoli Antrim Devonian shale and siltstones LAWRENCE LAWRENCE Olentangy Devonian shale and siltstones LAWRENCE that may have CO2 enhanced 0 10203040miles 0 10203040miles 010203040miles 0 10203040miles Lockport Dol Member Devonian shale and siltstones Devonian shale and siltstones SILURIAN oil recovery (EOR) potential. Marcellus Devonian shale and siltstones 0 1020304050kilometers 0 1020304050kilometers Clinton Rochester Sh 0 1020304050kilometers 0 1020304050kilometers Gp Dayton Fm Gordon Stray Silurian - Devonian “Big Lime” Eastern Ohio contains nu- Traverse Silurian - Devonian “Big Lime” Wenlock Delaware Silurian - Devonian “Big Lime” Llandovery-

Cabot Head Fm Silurian MedinaÓ

Cataract Gp ÒClinton/ merous deep saline formations Brassfield Fm Onondaga Silurian - Devonian “Big Lime” Columbus Silurian - Devonian “Big Lime” Queenston Sh Map showing available rock core, composite. See table at left for a listing of the formation(s) for each OCDO Map showing available rock cuttings sample sets, composite. See table at left for a listing of the formation(s) for Map showing brine disposal rates, composite. See table at left for a listing of the formation(s) for each OCDO Map showing available brine chemical composition data, composite. See table at left for a listing of the Big Lime Silurian - Devonian “Big Lime” that have limited well penetra- Detroit Group Silurian - Devonian “Big Lime” Cincinnati gp group. The Survey’s core collection consists of 955 individual cores from Ohio, Kentucky, and . All each OCDO group. The Survey’s well cuttings collection consists of samples obtained from the drilling of 5,066 group. Injection rates were calculated based on recorded total volume in barrels of injected brine divided by the total formation(s) for each OCDO group. This data comes from the Ohio Brine database, which consists of 569 for- Sylvania Silurian - Devonian “Big Lime” tions, thus their lateral extents Utica sh Bois Blanc Silurian - Devonian “Big Lime” core is available for observation and some may be sampled. wells. Also, duplicate sets of cuttings from over 1,200 wells provide additional material for examination, sampling, number of injection days. Injection data gathered and managed in RBDMS database. mation water analyses. Point Pleasant Fm Oriskany Silurian - Devonian “Big Lime” Trenton Ls Lexington Ls and UPPER Silurian - Devonian “Big Lime” and geochemical analysis. and injectivity properties are Black River Gp Helderburg Silurian - Devonian “Big Lime” Silurian Silurian - Devonian “Big Lime” Wells Creek Fm shale Ordovician not well defi ned. Yet this re- River Trenton-Black Bass Island Silurian - Devonian “Big Lime” Bass Island Group Silurian - Devonian “Big Lime” Salina Silurian - Devonian “Big Lime” gion has one of the largest con- Salina G Silurian - Devonian “Big Lime”

ORDOVICIAN Salina F Silurian - Devonian “Big Lime” MIDDLE POROSITY & PERMEABILITY TEST DATA AVAILABLE ROCK CUTTINGS SAMPLE SETS, PER FORMATION GROUP BRINE DISPOSAL WELL INJECTION RATES, PER FORMATION GROUP FORMATION PRESSURE DATA Salina E Silurian - Devonian “Big Lime” centrations of large CO2 point Salina B Silurian - Devonian “Big Lime” (FROM ROCK CORES & WELL TESTING) Salina A Silurian - Devonian “Big Lime” sources in the United States. Salina undifferentiated Silurian - Devonian “Big Lime” Beek- Undifferentiated Salina Dolomite Silurian - Devonian “Big Lime”

LOWER mantown Tymochtee Silurian - Devonian “Big Lime” ERIE In Ohio, oil and gas fi elds hold dol Greenfi eld Silurian - Devonian “Big Lime” Knox ASHTABULA

Rose Run ss Dol Knox Salina Dolomite Silurian - Devonian “Big Lime” Cambrian- the potential to store large Copper Ridge Ordovician Williamsport Sandstone Silurian - Devonian “Big Lime” LAKE dol Lockport Silurian - Devonian “Big Lime” LAKE LUCAS Eau FULTON Claire Newburg Silurian - Devonian “Big Lime” WILLIAMS amounts of CO2 while simul- Fm Conasauga First Water Silurian - Devonian “Big Lime” OTTAWA gp GEAUGA FORMATION GROUP FORMATION GROUP FORMATION GROUP FORMATION GROUP Mt. Lockport Group Silurian - Devonian “Big Lime” Simon Ss Silurian - Devonian “Big Lime” CUYAHOGA basal ss Pennsylvanian undifferentiated taneously producing hundreds Gasport Silurian - Devonian “Big Lime” Pennsylvanian undifferentiated Pennsylvanian undifferentiated Pennsylvanian undifferentiated WOOD SANDUSKY ERIE DEFIANCE HENRY Rochester Formation Silurian - Devonian “Big Lime” TRUMBULL Mississippian undifferentiated Mississippian undifferentiated Mississippian undifferentiated LO RAIN Mississippian undifferentiated of millions of barrels of addi- Niagaran Silurian - Devonian “Big Lime” Berea Berea Berea Berea MIDDLE Neahga Shale Silurian - Devonian “Big Lime” CAMBRIAN Laurel Silurian - Devonian “Big Lime” PORTAGE Devonian shale and siltstones Devonian shale and siltstones Devonian shale and siltstones Devonian shale and siltstones HURON tional oil through EOR. PA UL DI N G SENECA MEDINA SUMMIT Silurian-Devonian "Big Lime" Silurian-Devonian "Big Lime" Silurian-Devonian "Big Lime" Silurian-Devonian "Big Lime" Silurian “Clinton/Medina” PUTNAM Silurian "Clinton/Medina" Cambrian pre-Knox Cambrian MAHONING Silurian "Clinton/Medina" Silurian "Clinton/Medina" Silurian "Clinton/Medina" Dayton Member Silurian “Clinton/Medina” HANCOCK To evaluate CO2 sequestra- Ordovician shale and Trenton- Packer Shell Silurian “Clinton/Medina” Ordovician shale and Trenton- PENNSYLVANIAN MISSISSIPPIAN Ordovician shale and Trenton- PENNSYLVANIAN MISSISSIPPIAN Ordovician shale and Trenton- LOWER PENNSYLVANIAN MISSISSIPPIAN BEREA BEREA BEREA Little Shell Silurian “Clinton/Medina” Black River Black River VAN WERT UNDIFFERENTIATED UNDIFFERENTIATED UNDIFFERENTIATED UNDIFFERENTIATED Black River UNDIFFERENTIATED UNDIFFERENTIATED Black River tion opportunities, updated Cabot Head Silurian “Clinton/Medina” CRAWFORD WYANDOT WAYNE STARK Cambrian-Ordovician Knox Cambrian-Ordovician Knox Cambrian-Ordovician Knox Cambrian-Ordovician Knox Clinton Silurian “Clinton/Medina” ASHLAND ALLEN COLUMBIANA Precambrian & Cambrian pre-Knox* Stray Clinton Silurian “Clinton/Medina” RICHLAND Precambrian & Cambrian pre-Knox* Precambrian & Cambrian pre-Knox* Precambrian & Cambrian pre-Knox* maps and databases have Red Clinton Silurian “Clinton/Medina” White Clinton Silurian “Clinton/Medina” HARDIN *Includes six Precambrian. *Includes 51 identified Precambrian cutting *Includes five Precambrian. *Includes five Precambrian.

NEOPRO- MARION been generated identifying the TEROZOIC Silurian “Clinton/Medina” CARROLL suites. 135 additional wells total depth in the Grenville MERCER AUGLAIZE Middle complex Medina Silurian “Clinton/Medina” HOLMES Precambrian however do not have a bottom Run Fm Brassfi eld Silurian “Clinton/Medina” MORROW † JEFFERSON Class I well formation identified in RBDMS. INJECTION RATE Class I well locations of all well cuttings, Brassfi eld Silurian “Clinton/Medina” TUSCARAWAS LOGAN KNOX bbls/inj. day Queenston Silurian “Clinton/Medina” OCDO AOR OCDO AOR SHELBY Red Medina Silurian “Clinton/Medina” COSHOCTON cores, oil and gas geophysical UNION HARRISON Class I well <75

TEROZOIC Granite- MESOPRO- Rhyolite Precambrian Ordovician undifferentiated Ordovician shale and Trenton-Black River DELAWARE

ÒPRECAMBRIANÓ OCDO AOR logs, porosity and permeabil- complex Ordovician undivided Ordovician shale and Trenton-Black River 75–150 DARKE Upper Ordovician undifferentiated Ordovician shale and Trenton-Black River CHAMPAIGN Cincinnatian Ordovician shale and Trenton-Black River LICKING 150–300 MIAMI GUERNSEY ity data, formation and well Drakes Ordovician shale and Trenton-Black River BELMONT 300–500

TEROZOIC MUSKINGUM PALEOPRO- and Arnheim Formations Ordovician shale and Trenton-Black River FRANKLIN Richmond Group Ordovician shale and Trenton-Black River CLARK pressure data, brine geochem- MADISON Ordovician shale and Trenton-Black River >500 SILURIAN- SILURIAN SILURIAN- SILURIAN SILURIAN- SILURIAN Fairview Ordovician shale and Trenton-Black River DEVONIAN SHALE DEVONIAN "CLINTON/ "CLINTON/ NOBLE DEVONIAN SHALE DEVONIAN "CLINTON/ DEVONIAN SHALE DEVONIAN istry data, and injection wells. Kope Ordovician shale and Trenton-Black River PREBLE MONTGOMERY FAIRFIELD PERRY † MONROE AND SILTSTONES MEDINA" AND SILTSTONES "BIG LIME" MEDINA" Total volume divided by number of days AND SILTSTONES "BIG LIME" MEDINA" Eden Formation Ordovician shale and Trenton-Black River GREENE "BIG LIME" Organic shale of injection. Utica Ordovician shale and Trenton-Black River PICKAWAY Subsurface horizons with high- MORGAN Point Pleasant Ordovician shale and Trenton-Black River FAYETTE Trenton Ordovician shale and Trenton-Black River Class I well data density also have been Lexington Ordovician shale and Trenton-Black River HOCKING BUTLER WASHINGTON WARREN Logana Ordovician shale and Trenton-Black River CLINTON OCDO AOR Confining unit Black River Ordovician shale and Trenton-Black River mapped to ascertain structur- Upper Chazy Ordovician shale and Trenton-Black River ROSS ATHENS Gull River Ordovician shale and Trenton-Black River VINTON al trends that are refl ected at Middle Chazy Ordovician shale and Trenton-Black River HAMILTON Lower Chazy Ordovician shale and Trenton-Black River HIGHLAND Lower Argillaceous Unit of Wells Creek Ordovician shale and Trenton-Black River multiple horizons. These new PIKE MEIGS Local potential Wells Creek Ordovician shale and Trenton-Black River CLERMONT JACKSON Glenwood Ordovician shale and Trenton-Black River St Peter Ordovician shale and Trenton-Black River maps include structure con- BROWN

Knox Unconformity Surface Cambro-Ordovician Knox ADAMS GALLIA tours on the top of the Silurian Beekmantown Cambro-Ordovician Knox SCIOTO Rose Run Cambro-Ordovician Knox Potential CO2 reservoir Prairie Du Chien Group Cambro-Ordovician Knox Dayton Formation, the Devo- 0 255075100miles 0255075100miles 0 255075100miles Knox Cambro-Ordovician Knox CAMBRIAN- PRECAMBRIAN CAMBRIAN- PRECAMBRIAN CAMBRIAN- PRECAMBRIAN Lower Knox Cambro-Ordovician Knox LAWRENCE ORDOVICIAN SHALE AND ORDOVICIAN & CAMBRIAN ORDOVICIAN SHALE AND ORDOVICIAN & CAMBRIAN ORDOVICIAN SHALE AND ORDOVICIAN & CAMBRIAN Copper Ridge Cambro-Ordovician Knox 0 10203040miles nian , TRENTON-BLACK RIVER PRE-KNOX 0255075100kilometers TRENTON-BLACK RIVER PRE-KNOX 0255075100kilometers TRENTON-BLACK RIVER KNOX PRE-KNOX 0255075100kilometers Trempealeau Cambro-Ordovician Knox KNOX KNOX Knox B Cambro-Ordovician Knox and the . Re- Basal seal 0 1020304050kilometers Cambrian undifferentiated Precambrian - Cambrian Pre-Knox Krysik Sand Precambrian - Cambrian Pre-Knox cent key investigations, such Kerbel Precambrian - Cambrian Pre-Knox Stratigraphic chart illus- Maynardville Precambrian - Cambrian Pre-Knox as the deep stratigraphic Pre- Franconian Precambrian - Cambrian Pre-Knox trating geologic units found Conasauga Precambrian - Cambrian Pre-Knox Map showing available porosity and permeability data from rock core and well testing, composite. See table at left Map showing available rock cuttings sample sets, per formation group. See table at left for a listing of the formation(s) Map showing brine disposal rates, per formation group. See table at left for a listing of the formation(s) for each Map showing available formation pressure data, per formation group. See table at left for a listing of the Rome Precambrian - Cambrian Pre-Knox cambrian test in Tuscarawas beneath eastern Ohio. Rock Eau Claire Precambrian - Cambrian Pre-Knox for a listing of the formation(s) for each group. Data were compiled by querying the RBDMS database combined with for each OCDO group. The Survey’s well cuttings collection consists of samples obtained from the drilling of 5,066 OCDO group. Injection rates were calculated based on recorded total volume in barrels of injected brine divided by formation(s) for each OCDO group. The pressure database is obtained from well completion reports and is man- Shady Formation Precambrian - Cambrian Pre-Knox County and the East Canton units are color coded to il- Middle Cambrian undifferentiated Precambrian - Cambrian Pre-Knox individual well fi les. The limited data coverage illustrates the need for additional data to be collected. wells. Also, duplicate sets of cuttings from over 1,200 wells provide additional material for examination, sampling, the total number of injection days. Injection data gathered and managed in RBDMS database. aged by ODNR Division of Oil & Gas Resources Management in the RBDMS database. The dataset includes mini- Mount Simon Precambrian - Cambrian Pre-Knox lustrate potential injection basal sand Precambrian - Cambrian Pre-Knox and geochemical analysis. mum, maximum, and average pressures of the following data types: bottom hole pressure (BHP), breakdown pres- oil fi eld CO2-EOR project in Precambrian Precambrian - Cambrian Pre-Knox zones, confi ning units, or- Precambrian crystalline basement Precambrian - Cambrian Pre-Knox sure, treating pressure, instantaneous shut-in pressure (ISIP), and five-minute ISIP. Stark County, also have been Middle Run Precambrian - Cambrian Pre-Knox ganic shales, and basal Granite Precambrian - Cambrian Pre-Knox Granite Wash Precambrian - Cambrian Pre-Knox Reference Cited incorporated into this project. seals. Modifi ed from Wick- Grenville Orogenic Belt Precambrian - Cambrian Pre-Knox Wickstrom, L.H., and 28 others, 2005, Characterization of geologic sequestration opportunities in the MRCSP region: Ohio Department of Natural strom and others (2005). Resources, Division of Geological Survey report prepared for DOE cooperative agreement No. DE-PS26-05NT42255, 152 p., 1 appendix.

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