oo . i Valley and
Geologic time scale from Gradstein and others (2004). Valley and Ridge Rome trough Rome trough Rome Ridge
Other stratigraphic subdivisions are noted by the following citations: province trough province
1Heckel and Clayton (2006); Harland and others (1990); *Ver Straeten and Brett (2006); Western and central
4 . 5 . 6, 7 .
Brett and others (1995); °Webby (1995); and °www.stratigraphy.org (accessed 12/3/07) Eastern and central Ohio New York
oe ae Western and central
. . ; North Sequences Southwestern Virginia Eastern Kentucky Central West Virginia :
International European |North American International ] AL Pennsylvania
Age (Ma)|Eon|_ Era System Seri Seri Seri St American modified from
eries eries erles age Stage Sloss (1988) North South South North West East West East West East West East
251.0 | a Changhsingian
. we 7)
Lopingian Q hoan wee Upper
ping 2 Oc 0a Wuchiapingian
260.4 — 3 —— ——
Guadalupi 3 Capitanian Capitanian Middl
uadalupian s 7 7 7 7 iddle
270.6 S s Wordian/Roadian Wordian/Roadian c
6 = ©
= Kungurian &
= E
3) . . . =
o Qo Leonardian Artinskian £
. . © Absaroka
Cisuralian = Lower
° :
a Sakmarian
Wolfcampian
— Asselian Dunkard Group Dunkard Group Dunkard
299.0 — >_Autunian _, | “alten Bursumian Gzhelian =
a rf 7 a , 7 Monongahela Gro: Monongahela Group M hela G a Upper
306.5 — > Upper Stephanian Missourian Kasimovian sate ne Mahohdahelakalaue) g we ——eor > Pp
. Qf i j Conemaugh Group Conemaugh Group Conemaugh Group: Conemaugh Group ano
c= . Desmoinesian + . c= +
c Cc Middle Ww hali Atok Moscovian Eiageville | : |-Wise Formation Allegheny Group [Allegheny Group Allegheny Group c c< |Middle
311.7 of estphalian tokan 14 NoroniGo mation! - - Breathitt Formation Kanawha Formation Pottsville oe o&
o > L Bashkiri ; New River Formation - Group Pottsville Group, undivided £ S
ower Morrowan asnkirian vasa [ Pocahontas Formation ae New iver roner
318.1 | g Namurian [ Bluestone Formation eee Formation g
H Pennington 44j, A Mauch Chunk Group
° Upper Chesterian Serpukhovian Group aor Pennington Group Mauch Chunk Formation Wms Gap ° Upper
326.4 — © Member o
b= Loyalhanna Formation =
Cc c Maxville Limestone c c
fo) © Middl M . Greenbrier Big Injun Sandstone fo) & Middl
a\ 3 iddle eramecian Visean 2) g |Micde
ra fol . ra Q
o | = Kaskaskia II Oo] ‘a
oO g = Peo eee (Ss) oO
345.3 4 ‘oO 2 Logan Formation 7)
a2) Osagean £ Pocono Big Injun Sandstone Burgoon Sandstone 2
s 5 . Black Hand Member (Big Injun sandstone) os =
L T _ o Borden Formation @ iN Sh 5 L
ower ournaisian 8 Price F ti uyahoga enango Formation ower
Ki h ki 2 mee wormasen Price Formation Formation i
inderhookian g Sunbury Shale Berea Sandstone Sunbury Shale Berea Sandst Sunbury Shale ['shae’ Cuyahoga G Rockwell Formation
5 erea Sandstone unbury ale tuyahoga Group
359.2 i CE eas ace
eascreee| Greenland Gap (Foreknobs) Formation Bedford Shale Beree/clsseweao) venande Group Feat
. is Three Lick Bed Chagrin Shale yatta Perrysb'
Chauta uquan Famennian ———— Ss OES WepedDeroniantetecmtndiyided Ohio Shale ree Lick Be igri Chagrin Shale eae Group Pe reins
roup r
Chemung Formation e © O) formegon aa - Upper
Upper see i pp
Java Formation olgatenay Shee orrst) Java Formation Java Formation Belltian Ff Gait an Tesla Te) strata, undivide
Senecan . “Angola Shale Member ‘Angola Shale Member ‘Angola Shale Member Fallier Formation —_—
West Falls ‘Sonyea and Genesee Formations (including Cc
Cc Frasnian Kaskaskia | Brallier Formation Formation C) C) amber Coat Limsotone, ane Penn Van Shale) ©
& Taghanio,? Tioghniogian ( , ‘ &
SJ Cc and Cazenovian? Sonyea and Genesee Formations ~~ i eiiizi>Oeseee ‘Sonyea and Genesee Formations @ ) Cc
385.3 4 '5 oO \ —— Sonyea Formation Tully Limestone ; Sonyea Formation Oo
. ° = ° Givetian > Hamilton Group ; Mascow, Ludlowville, and Skaneateles Shales >
N fo) > . Erian2 Hamilton ~~] Hamittch Group Tioga Bentonite Marcellus Shale Mahantango Formation () | Hamilton Group (including Cherry Valley and Tichenor Limestone Member) e@
; . Pp Olentangy Shale (lower) (y e@ oO .
° N a Middle Southwood? Emsi Eifelian HuntersvlleChert Onondaga Limestone s fat Middle
o N UTNWO OTe wkill? msian =n
397.5 4 < © c i : React
. —= = Boyle Dolomite i 2
2 oO 2 Deer Park? Prag lan ‘Wildest Valley. Oriskany Sand Oriskany Sandstone Sandstone Cc aistany Sandstone’ Ridgeley Sandstone
jandstone, . riskany Sandstone Orisk:
oO 2 Xe riskany
Sandsti
rower = Helderberg? Lochkovian [Healing Springs | E Helderberg andstone Lower
& |_Limestone
41 6.0 —| Keyser Limestone (upper and lower) = Akron Dolomite
. . ind Big Mountain Shale i
Pridoli % Cc n4 S see een ns ° SASSTGN Dolan Keyser Formation
418.7 2 ayuga 2 Salina Group Salina Group Salina Group Salina Group Salina Group Upper
c Ludlow i i i i : Tymooftee and : c
422.9 _ © 5 5 Ludfordian/Gorstian Tippecanoe Il Formation] salts | leer Bis senaaaseekPort Dolomite ereehfetd Botopatos Neetrerabelerne Lockport Dolomite Lockport Group S
c Middle® i i i i
128.2 — 5 Wenlock idle’ Niagaran‘ |“: Homerian/Sheinwoodian = SS SE Aochostor Shale 5 Middle
= = g A Rose Hill Formation ge Alger Shale Rose Hill Formation anTA Rose Hill Formation Clinton Group wn
s Telychian ‘ose EY crab 9 iluri ivi Lower Silurian carbonates op)
ep) Llandove ry $ i y' es oars Plum Grek Sha Member Lower Silurian carbonates and shales, undivided Boatshalestaadvided Geseremltentea Lower
fo) , . -
443.7 a Aeronian/Rhuddanian Clinch Sandstone [Tuscarora Sandstone | Drowning Crdek Formation Tuscarora Sandstone Cabot Head Shele | Eitan aanastone Cabo: Medina Group Tucearors Formaliog Medina Group
Ashg illian Cincinnatian Hi rnantia n Richmondian inch Sandstone Brassfield Member. Brassfield Limestone ueenston Shale
Maysvillian (are ERE
Katian® oo
U pper H felon Kirkfieldian® OnE y pper
Caradocian Mohawkian reldian Rocklandian® Ti
ippecanoe |
c Sa nd bia n® Turinian Blackriveran® Cc
Oo oO
460.9 — ‘Oo =
. J LI irni ate I IDF °
= anvirnian i i , =
3 Middle Whiterockian Darriwilian Wells Creek dolomite St. Peter Sandstone ‘st paiangmed sandstone | unnamed anhydritic dolomite Wells Creek formation Lf um@acslcanertacntorto 3 Middle
Dapingian oes ”
471.8 — xe) vai WA xe)
. o Arenigian - 6 a £
oe) Floian Dee (o)
Knox unconformity Beekmantown
Lower . e Group Beekmantown
T doci Ibexian T doci Beekmantown Dolomite Beekmantown Dolomite Beckinantaven|Dolorritel Group Lower
remaaocian remaaocian Knox Group Knoscrotn Rose Run Beekmantown ;
488.3 | Rose Run Sandstone Rose Run Sandstone sandstone —] Mines Member
an 54 Trempealeauan? jl ji 7 7 B upper sandy member PST ri
F ngian S tk 2 Currently unnamed, awaiting ratified definition. : TM “ Pee orks Brallennia Copper Ridge Dolomite Limestone Gonper — = B zone Sonny HEED - Knox dolomite Sastucremarer Little Falls U
urongia = Croixian Paib Crcabocha 7 = Dolomite —r—rv—scre Kerbel Formation dolomite Nolichueky Shale lower sendy. member Galway (Thergsa) Formation Formation pper
aibian resbachian’ 0 >
— ie sa
501.0 3 3 Nolichucky Shalé ; ® 2 |conasauga ! - Conasauga Group
. Sauk 26 Honaker Formation Rogersville Shale 8&6 Grou Rogersville Shale unnamed sandstone member| Mount Simon Maryville Limestone Potsdam Sandstone .
Cc Middle Alberta n2 Currently unnamed, awaiting ratified definition. 8° Pumpkin Velley Shal i} 9 P Sandstone Middle
& cmation i i jon Pumpkin Valley Shale o
513.0 — 5 fief. | ear emer || tie iano ree) nea Waynesboro Formation =
Shady Dolomite — Shady Dolomite — Tomstown Dolomite Tomstown Formation ?— —— ?—-  ?— > Te)
E basal sandstone basal sandstone Chilhowee Group Chilhowee Group E
6 8
Lower
Lower Ww 2
aucoban
542.0
600 —
L
700 — g
{e)
i
oO
~
fe)
800 — 5
(eo)
oO
2
900 >
1000 — .©
fo)
N
fe)
d
1100 — 5
Oo EXPLANATION Basement rocks (metamorphic and igneous) of the Basement rocks (metamorphic and igneous) of the
subsurface extension of the Grenville province ‘* subsurface extension of the Grenville province
Ranki i
oO (Rankin and others, 1993) (Rankin and others, 1993)
1200 4 io) Sandstone i Red shale Metamorphic and igneous rocks
N
fo) Bentonite—Dashed where inferred
oO eee Red sandstone i Limestone
1300 — io) @ Interval sampled for Ordovician conodonts
o . (this study)
Shale and sandstone Dolomite
S$ @ Interval sampled for Devonian conodonts
a (this study)
_| o Gray shale A al Chert . . Sources: Sources: Sources: Sources: Sources: Sources:
1400 S Oo Interval sampled for Devonian dispersed LeVan and Rader (1983) McDowell (1983) Patchen and others (1985) Slucher (2004) Berg and others (1983) Oliver and others (1967)
vitrinite (this study) Englund and Thomas (1990) Currie and MacQuown (1984) Ryder and others (2008) Ryder and others (2008) Harper and others (1999) Rickard (1973, 1975)
| Black shale Evaporite Virginia Division of Mineral Resources (1993) Patchen and others (1985) Laughrey and others (2003) Diecchio and others (1984)
Rice and Schwietering (1988) de Witt and others (1993)
Englund and Thomas (1990) Brett and others (1995)
1500 — Chesnut (1992) Laughrey and others (2003)
Meglen and Noger (1996) Landing and others (2003)
Steve Greb and others (Kentucky Geological
Survey, 2004, unpublished data)
1600 Harris and others (2004)

Figure 4.—Correlation of Paleozoic rocks in Kentucky, New York, Ohio, Pennsylvania, Virginia, and West Virginia showing intervals sampled for conodonts and dispersed vitrinite.