‘
US. DEPARTMENT OF THE INTERIOR
U.S. GEOLOGICAL SURVEY

APPROXIMATE WESTERN

LIMIT OF ROME TROUGH
AMITY WAYNESBURG
ANTICLINE SYNCLINE

' '

BELLE VERNON PORT ROYAL BROWNSVILLE

ANTICLINE SYNCLINE

’ Y

LAMBERT
SYNCLINE

’

FAYETTE
ANTICLINE

CHESTNUT RIDGE
UNIONTOWN CHESTNUT RIDGE ANTICLINE LIGONIER
SYNCLINE ANTICLINE (SECONDARY BRANCH) SYNCLINE

Y ’

’

CENTRAL WEST VIRGINIA ARCH

AND
APPROXIMATE EASTERN
LIMIT OF ROME TROUGH

LAUREL HILL NEW LEXINGTON
ANTICLINE SYNCLINE

’

SCIENTIFIC INVESTIGATIONS MAP 3172
(SHEET 2 OF 2)

Explanatory pamphlet accompanies map

NEGRO MOUNTAIN
ANTICLINE

Y

SCHELLSBURG
DOME

’

WILLS MOUNTAIN

c'

EVITTS MOUNTAIN

ANTICLINE ANTICLINE

Y

GEOLOGIC CROSS SECTION C-C' THROUGH THE APPALACHIAN BASIN FROM ERIE COUNTY, NORTH-CENTRAL OHIO, TO THE VALLEY AND RIDGE PROVINCE, BEDFORD COUNTY, SOUTH-CENTRAL PENNSYLVANIA

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FEET
\ Monongahela Youghiogheny BEDFORD AND EVITTS f 8000
' River River CREEK SYNCLINE im
' Bend in Secti Formation tops Formation tops Formation tops Formation tops Formation tops
! lend in Section (surface to Ridgeley Sandstone) (surface to Ridgeley Sandstone) (surface to Ridgeley Sandstone) (surface to Ridgeley Sandstone) (surface to Ridgeley Sandstone) [4500
! derived from the derived from derived from derived from derived from the F
\ CNG Development Co. Amoco Production Co. Dominion Exploration and Production Amoco Production Co. CNG Development Co. i r
\ No. 1 CPA Tr. 661 No. 1 Hemminger No. 1 Svonavec No. 1 Brant No. 1 Lehman Appalachian Valley and r
\ NW NE API 37-111-20181 API. 37-111-20102 API 37-111-20195 API. 37-111-20059 API 37-111-20169 Plateau Ridge 4000
i Somerset Co., Pa. Somerset Co., Pa. Somerset Co., Pa. Somerset Co., Pa. Somerset Co., Pa. province province
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! 135 140 145 150 155 160 165 170 175 180 185 190 195 205 210 215 225 230 235 240 250 255 260
L 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 4 1 1 1 1 1 1 1 1 1 1 1 1 1 4 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 4 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 in 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 4 1 1 1 1 1 1 1 1 1 1 1 1 1 1
\ 8 Formation tops 9 10 "
' Formation tops Formation tops William E. Snee, et al (surface to Licking Creek Limestone} ‘Amoco Producing Co. Kerr-McGee Corp. Atlantic Richfield Company
! (surface to Chagrin Shale) (surface to Salina Group) No. 1 E.C. Ricks Snee and Eberly Co. . No. 1 Leonard Svetz Loyalhanna No. 1 Schellsburg No. 1 Fred Steele
' derived from the derived from the Fayette Co., Pa. No. 1 Leonard Pottsville Group. Somerset Co., Pa. Formation Bedford Co., Pa. Bedford Co., Pa.
\ Quaker State Oil Refining Corp. Snee and Eberly Co. ‘API 3-081-20051 , ap
\ No. 10 Matthews No. 1 Duvall Fayette Co., Pa Limestone Member Allegheny
| API 37-003-20032 API 37-125-20173 0 y _ of ve Upper Kittanning % Lp,
i Allegheny Co., Pa. Washington Co., Pa. Upper Freeport "coal bed Reo c
' (in Harper and Laughrey, 1987) (Pottsville Group to Chagrin Shale in Upper Kittanning R ~ coal bed S ra “ y
Hi \d Laughrey, 1987; coal be ne vatanmi Me 10)
larper and Laughrey, 1987) saz ‘Conemaugh Group Upper Kitanning alfecszxacurth R zs legheny G Ridgeley Sandstone, Needmore Shale,
* coal be: SS Group rm R R Pottsville Grove, and Onondaga Formation (undivided)
‘ottsville GOS, Upper Freeport ~ = » x Onondaga Formation and oo corm Shriver Formation, Mandata
! Wymps Gap Limestone Member. Banna pe coal bed 1 = R Mauch chank Fore Huntersville Chert Merce eho Stale Comigamie and Hamilton Group
' <0; Ridgeley Sandst larcellus
pe mn N R ~ : idgeley Sandstone,
\ 100) Barguen sense . 5 Za “000. WAGERS enone S Lower Pennsylvanian unconformity = CRN = § Neeamors or aburg Formation Bick iver
\ Frenan99f Fo, lember — one roup ALi
' Dunkard Group Dunkard Group Dunkard Group Dunkard Group Dunkard Group fa aw sandaon® -cshaas << C. by boN & RAS R MOR f % eceter, | Ore il Limestone Member
\ a on os Rockwell ‘ ,
! [Sn = > Sai x 1 ni = Formation Ne ins Delite Member
2 —
| Pittsburgh Monongahela Group ____—-C~ a a we O'S Pittsburgh coal bed @ xe XN >, 2 Fonphiven ee — % od
coal bed ‘C—___—C R ——_—_————¢. C: M nel? G > . i ition nn ae as Se a
| R R R R lononga' “e~ = Wes ky j Ee 1000"
R ay = v a
__¢ —————___,. Conemaugh Group a oo c ko) p20 RO Es Reo ;
——SSS_ —_—, 6a ee a C. Upper Freeport coal bed log) f xX x Why ase Se Za : \ > e
SS 7 ae x. 3 i=
C—O g eS é c— —~<_, Le E S S & SSS oe EE 1000 E
@ Allegheny Group c ——— 6 > - - - — : = LMG 1 aa la 3 Mean sea level
eR a SN ee ee WR ne oe aa, pat ~ \ We ~~ ey SRST UN Shey seghPossicin hei iaieeiie vastus shen, nies isnigisehna tines “7 TSO . pom gt Tae
Loyalhanna Formation Pottsville Group Mauch Chunk Formation Z Lp a yy r NL a a 7] % c
———_ = se es = ; ; c
Shenango: / oe ~ _ S Y bo ihe / \\ Me, Mines Dolomite Member
———S ation L ~ . Sie im
= euychooa: Burgoon Sandstone Ss EES +3000 | Foreknobs Formation ; a see / Cn |! [800
—————— aaa = LES ~ Q < / Y, E
= ae ferper an SS ae hos ee us pee
en Lage TSF Sa snsons — EE ee noe ‘ es are iactoid Gre < ee ——— 7 ? <) %, 2000
Venango Group pry Harper and Loughrey (198) = Sere 0 g we is R ~~ of : ea i fl — 1000
ooo =~ — an, ee een, x ° ) My 1 i a r
nia = zs << Poe LEGES | = —_} e S ' = Ns E
\ ra > Venango Group na ~ -, a = 1 ae s es A fb
\ ~~ = es = 2 05 rae a _ L4oo0  ! ms se ae | = F_ 1500
| rt Venango Group : : e *s rg Foreknobs Formation | Ne & Ore Hill Limestone Member c
bow ~ a — oc ' ES bee as em ; = 1 3000 rc
\ ~~ om ~ om ~ ~ . . p00 ag eS = - | \Y a 1 g B [2000
\ ax ~ Chadakoin aa roup Scherr Formation 2 eae i] s NX eadevil N/ C
1 oo aw aN ad Formation a ay ons a - %, Os, «x ub i=
~ a a a ams fe om oa ge % % Antes, 3 Ec
t Chagrin Shale axe L oo X a % NS Shai &
| om a 5000 Liswve - 2-5 3 2500
a a Bradford Group = % x oa a a | | 5, \ Ey
| or = he - oe mie we I ay ‘Antes Shale g 4000 F
if %: E
Hl N Scherr Formation | % o
i X pee me e « % g [3000
1 N 35 — || NY 5
{ Chagrin | = ae S ee cs E
Shale | Brallier L Se “ mit: sins t
i Formation Ging , +6000 = TE. | \ “Deicke Bono [9500
1 Brallier _ , ie is \ 3 F
\ Raritan Braillier Formation wn _ = } ie x ‘Hoo c
1 E
1 aa S ey 4000
t a Braillier Formation i %
West Falls q —— o Warrior Formation
Formation \ ~~ = +6000! $ Pleasant Hill Formation c
1 7000 pooled ata) ~ t %, F- 4500
q ‘ormation - a $ E
1 % ‘
%. Waynesboro Formation c
Hay q Senesc6 Formation 10090 FOrm, > ~ ae a / ee. 6000 -
miltén Group pon io, Harrell Formation we 6, —
Mahantango Renan bs Harrell Harrell Shale @ f ) EC
‘ation 5 amittan Grou! Formation : a 4 Zone of imbricate thrust faults containing horse blocks c
larcellus Formation WuEE En Tully Limestone “Tully Limestone 1 [7000 % i of the Pleasant Hill and Waynesboro Formations r
mnconformity Sonyea Formatio® Mahantango | “by
' S ul Formation %o
ene, ;
| 368 Formation Hamilton | & 7000
| May Ps Group. Hamilton } ©
Pantango Forma ones Group x
il son f ;
\
+ ‘9000. I
Hl bi Rid Jeley Sandstone t
MI 3000
; re Sha I
ilorig Bentonite Bad ;
ll [2 j | beh won Pleasant Hill and Waynesboro Formations
bt Group, 0,000 10,006 Tonoloway Formation / 3
a al & |i
z = ~ 5 ||:
2 = > 2 I = om | \ 3 0
: = N = _— = _ 2
Medina Group = = Bloomsburg Formation _ _ = = _ = g
Wills Creek Formation = = _ — = _ = _— = _ _ I 5
| = — = = — _ = ~ =_ _ — —_ _— Bloomsburg Formatior i |_10,000 \ g
3 — — = = = — Wills Creek Formation —_ . = Mines Dolomite Member
H Tuscarora Formation ‘Keefer Formation and Rochester Member — — y 11,000 = = = 71,00 = = = _ = { 3
of the Mifflintown Formation (undivided) S . = — — = Sz lower i t
\ Rose Hill xe = ————— anhydritic HE ooo C
i — — ‘Keefer Formati \d Rochester Member ‘ '
Formation a SE = = = — etn . R ee ed i dolomite
te =< = SS — — R
E = = — A Rose Hill Formation, R a Y f ‘ C
=< mae “ —— Q E
ienaea as r Tuscarora Formation = = a = = ae == WW oe
wes Ser AWAL on =F %2,000, we ~ = sate = = — a _ H = F_ 9500
~ bani RES nit aa = = Castanea Member: f im
Rte: — ~~ 4 Ore Hill kK
~ 3 a Tuscarora Formation en ow ener 100 Ec
ae — TasceroraTantata transition zone, = = ON - 10,000
ee erie [ EF
i TD 11,850 Q . E
f = nao 8 & Bolom 4
oa od em dh lember ‘|
' = ae ae mia te oars — sts se ee 2,
{ — poet = aes sate mond SELES pared Hf upper sandy SS 0
' Bald Eagle Formation ae member ~ .
ot Eanes ie — RAS. as pore 2 e bi
— ~S RES SORES og aes Ore Hill Limestone Sl mines .
ao on ni ia o. AS Member * & \\ Dolomite:
Knox unconformi a “Bald Eagle Formation SASS arte ence a 4 Member a
Reedsville Shale ees . 3 2
g \3 a
‘\s “il
2 . 2
Reedsville Shale \ lower sandy \ a
| member : 2
. Ey
Ore Hill
Limestone-
Member [\,
: Gategp: .
RStesby, y |
. ormation
upper sandy member ® . :
Q\2. g
Gatesburg . a\3, .
Formation a2 \ 15,
s ZS
— ~ 3 ar 8
% 3
— upper anhydritic dolomite . %
?. TM~ ‘ . 3 TD 15,500
inte 000 : )
ree a = oe a % 7 2
Po == oa * 3 NE
—_ S —s 7 a We
ee ~ = : g \. i
= — + t & 3
20, middle anhydritic dolomite le = a Be El
Warrior Formation 2 Sue) — —_ 3 % . . iS
. ?. as __ ms ~e 33) 3 ~ .
~ = a . NE
Wr, ~~ ea 3 2 |.
. a a ge 3 oa
. Og Beekmantown \ 3
a . 206 . Group ~~ 9 : 5
‘19, 3 8
~ 0 : g
Beekmantown B g ls
° Group Beekmantown q. me
be Se 1 Group . a . 3 a EC
1 a 3 E
Waynesboro Formation 2, a 7 H Ey 3 2 ; E
3 3 2 | : E
a ~ 4 Lo0.0 5 a 3 3 ep [— 17,500
4 g 7 3 C
a 3 2. \ WV E
Warrior <i z atts nh, s : B i.
Formation 2 © . g [ 18,000
7 . a rN a 4 ia % z y . C
Hinge zone > Mines Dolomite Member_& race Dolomite MEMBE aa z 5 z
/ . : 121,000 a rs . : a @
\ . .
\ | . upper sandy member upper sandy member _ z]
' Chilhowee Group on ers oan + > = SS . t <
B05 at ill Lin °6 :
. . | Bea inex anparaquvaent TD 21,460 ®o Boe = : Pleasant Et
; Pittsburgh-Washington a én Formation eye
s ooo 00 s\\s
cross-strike atesburg . : : ° z\é
i . wo . Formation --- . S N38 L_ 19,500
j structural discontinuity lower sandy member . . 006 200 . . g \2
! 000 . . 9 . lower sandy member . . . 2 2 C
. . Gatesburg 3 |: C
I ; on | . .. Formation . 20,000
1 Appalachian Plateau Valley and Ridge 000 . . .. Soy :
1 province province Soe . a ° nt
. - . . ‘i
Wills Mountain Warrior ne Rey
anticline eae ° z :
i Chestnut Ridge Laurel Hill Negro Mountain Schellsburg _Evitts Mountain . ; 2
anticline anticline anticline dome anticline . zl
drill hole 8 drill hole 9 drill hole 10 drill hole 11 ooo : :
1 : . :
\ | : .
I :
; 200 Warrior
\ Formation 20a
\ ~
- Warrior
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Ad i
\ fit Tomstown Formation Cn g  Genutitan
\ \
\ | . “| le
\ bt hilhowee Group
j --Eab
1 —
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' Northern extension of the Central West Virginia arch (Kulander and Dean, 1986)
' Master footwall
' |— ramp of the WMa
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} Master footwall
| [~ ramp of the EMa
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I A EC
' ) Waynesboro Tomstown Formation E
! Formation [— 25,500
Master footwall Chilhowee Grou r
! | ramp of the Sd e r
i | E
2
Parautochthonous block [26,000
\ E
\
\
\
\
l Rome trough Chilhowee Group
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+
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Ynconte, P h-Wash
mit .: 7 1
! y Mesoproterozoic basement rocks ittsburgh-Washington 13
| cross-strike
structural discontinuity
i Mesoproterozoic basement rocks >
+
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j Figure 3.—Diagram showing major footwall ramps (thrust faults) and zones of bedding-plane detachment in the eastern part of cross
1 section C-C'. Abbreviations are as follows: Ad, Antes detachment; bt, back thrust; Eab, Eastern allochthonous block; EMa, Evitts Modified from Knowles (1966), Gwinn (1970), and Berg and others (1980)
1 Mountain anticline; fit, frontal imbricate thrust; Mab, Middle allochthonous block; Md, Marcellus detachment; Sd, Schellsburg dome; — (thickness of strata and fault geometries are schematic in >
Hl S-WCd, Salina-Wills Creek detachment; Wab, western allochthonous block; WMa, Wills Mountain anticline. places due to structural complexity and vertical exaggeration)
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' ~ Rome trough a
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aUSGS

science for a changing world

By

Robert T. Ryder, Michael H. Trippi, Christopher S. Swezey, Robert D. Crangle, Jr., Rebecca S. Hope, Elisabeth L. Rowan, and Erika E. Lentz

2012

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For sale by U.S. Geological Survey, Information Services, Box 25286, Federal
Center, Denver, CO 80225; telephone 1-888-ASK-USGS

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ISBN 978-1-4113-3277-5

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