teaching structural geology, geophysics, and …july 15, 2012 8zwn *wj 0i\kpmz tectonics and...
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Zd
84˚3
0'84
˚
05
1015
20
kilo
met
ers
Ch
lori
te is
og
rad
corr
esp
on
ds
toth
e M
iller
Co
vefa
ult
Zch
Om
b
Zw
e
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Cw
h
OC
bam
faul
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TNN
C
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bam
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t
Bra
ssto
wn
Fm
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urp
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Mar
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Min
eral
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ff G
rou
p
Nan
tah
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Pal
eozo
ic V
alle
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d R
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llian
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emen
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ork
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ing
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ek G
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wh
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ilho
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rmat
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ite
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ITY
Snowbird Gr.
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e
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n F
m.
Am
mo
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Great Smoky Gr.
UN
CO
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e
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n F
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mo
ns
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utt
y Fm
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pp
erh
ill F
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Great Smoky Gr.Murphy Gr.
EXP
LAN
ATIO
N
WES
TEA
ST
Pig
eon
Silt
sto
ne
/ Met
calf
Ph
yllit
e
Yb
(Mu
rph
y-A
lum
Cav
e sy
ncl
ine)
July
15,
201
2
Tect
on
ics
an
d S
tru
ctu
ral G
eolo
gy
Res
earc
h
RD
H 7
/1/2
012
Un
iver
sity
of T
enn
esse
e–K
no
xvill
e
Ad
dit
ion
al e
xpla
na
tio
n in
sid
e fr
on
t co
ver.
Teac
hing
Str
uctu
ral G
eolo
gy, G
eoph
ysic
s,an
d Te
cton
ics
in th
e 21
st C
entu
ry W
orks
hop
Ch
lori
te is
og
rad
corr
esp
on
ds
toth
e M
iller
Co
vefa
ult
GF
RCFO
F
FBR
PR
HF
PF
N
Tuck
alee
chee
C
ove
Cad
es
Co
ve
Pz
Sto
ne
Mtn
C
Ravensford antic
line
Cartoogech
aye terra
ne
Duc
ktow
n an
ticlin
e
Epperson
sync
line
PC
G
36˚
36˚
GSM
NP
Tect
on
ics
Res
earc
h Meso/Micro
Structures,
Mechanics
Str
ain Analysis
Regio
nal S
tru
ctur
al G
eolo
gy
Dynamics, Thermodynamic
s Org
anic, Analytical
Materials Science
Chemistry
Physical, Inorganic
Continuum Mechanic
s
Min
eralo
gy
Eco
no
mic
Geo
log
yG
eoh
ydro
log
y
PaleontologyStratigraphy
Sedimentation
Geo
ph
ysic
sGeochem
istry
Geo
chro
nolo
gyM
etam
orph
ic
an
d Ig
neo
us
Pet
rolo
gy
Hydrocarbon
Exploration Geomorphology
Scie
nce
Alli
ance
C
ente
r of
Exc
elle
nce
W
hitestone
fau
lt
GSF
Ocoee R.
L
ittl
e T
enne
ssee
R.
Telli
co R
iver
Hiw
asse
e R.
N
84˚3
0'
35˚3
0'35
˚30'
83˚3
0'
35˚
35˚
84˚
M
D
83˚3
0'
129
40
Cw
Cw
Cw
Cc
TP
Zw
e
Zw
e
Zam
Zam
Zch
Zch
Zch
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Zd
Om
b
Zw
e
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eZ
we
Zg
b
Zw
e
Zd
Zd
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Cc
Cc
Cc
Cs
Cs
Cc
Cc
Cn
t
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h
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h
Cw
Cw
hC
wh
Cs
Mille
r
Maggies
Cove f.
Cs Z
d
Zam
Zam
Rabbit
Cree
k f.
Zam
Zam
GSF
G/OF
MCF
GBF
GBF
GBF
GF
MCF
Zch
Zam
Zch
Zch Z
ch
Zw
e
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e
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e
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e
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e
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Zsb
Zsb
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C
s
C
s
Zch
GSF
GC
F
Pz
Pz
Pz
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Shie
lds
Mtn
Eng
lish
M
tn
Ch
ilho
wee
M
ou
nta
in
Zd
DCF
Gre
enb
rier
fau
lt
Un
rug
"fo
ssil"
loca
lity
&R
epet
ski 7
/03
sam
ple
(s)
July
15
Blu
e R
idg
e Fo
oth
ills
trip
Fiel
d t
rip
sto
p
Ad
dit
ion
al R
epet
ski 7
/03
sam
ple
(s)
Rep
etsk
i co
no
do
nt(
s)
Wes
tern
Blu
e R
idg
e G
eolo
gy
Sou
thw
este
rn N
ort
h C
aro
lina
&So
uth
east
ern
Ten
nes
see
Ma
p c
om
pile
d b
yM
ark
W. C
art
er 1
995–
1996
Wilh
ite
Sla
te
Ma
p c
om
pile
d (a
nd
mo
dif
ied
) fro
m:
Kin
g e
t al.
USG
S P
rofe
ssio
na
l Pa
per
349
M. P
. Au
sbu
rn e
t al.
(199
8) T
op
ton
qu
ad.
, NC
Geo
l Su
rvey
D. W
. Mo
hr
(197
5) N
ola
nd
Cre
ek q
ua
d., N
C G
eol S
urv
ey
L. S
. Wie
ner
an
d C
. E. M
ersc
ha
t (19
92) S
W N
C,
SE
TN, &
N G
A G
eolo
gic
Ma
p, N
C G
eol S
urv
ey
L. S
. Wie
ner
, un
pu
blis
hed
ma
p
Un
iv. o
f Ten
nes
see
un
pu
blis
hed
M.S
. th
eses
:
Un
iv. o
f So
uth
Ca
rolin
a u
np
ub
lish
ed P
h. D
. dis
sert
ati
on
M. W
. Ca
rter
(199
4)D
. J. G
edd
es (1
995)
J. O
. Co
stel
lo (1
993)
S. L
. Ma
rtin
(199
7)H
. E. P
hill
ips
(195
2)R
. I. R
ack
ley
(195
1)
Mo
dif
ied
by
J. R
yan
Th
igp
en, 2
003
an
d B
ob
Ha
tch
er, 2
003,
201
2
RD
H '0
3, '1
2
Zw
e
Zam
Zd
OC
bam
OC
bam
Cn
t
Hay
esville
2
3
3
45
6
8
11
109
1
7
441
Wea
r C
ove
Cc
Cc
Cc
Mill
er C
ove
syn
clin
e
Ch
GB
F
Fair
Gar
den
antic
line
Tow
nsFa
ults
D—
Duc
ktow
nM
—M
urph
yC
h—C
hero
kee
TP—
Telli
co P
lain
sW
—W
alla
nd
PF—
Pige
on F
orge
S—Se
vier
ville
S—Se
vier
ville
PC—
Pittm
an C
ente
rL—
Laur
elC
—C
osby
N—
New
port
G—
Gat
linbu
rg
GB
F—G
reen
brie
rG
/OF—
Gre
enbr
ier/O
cona
lufte
eO
F—O
cona
lufte
eM
CF—
Mill
er C
ove
DC
F—D
unn
Cre
ek
RC
F—R
abbi
t Cre
ekW
F—W
hite
ston
eH
F—H
ayes
ville
GC
F—G
uess
Cre
ekG
SF—
Gre
at S
mok
y
GF—
Gat
linbu
rg
Tenn
esse
eN
orth
Car
olin
a
2
Hatcher
(a)
(b)
(c)
5.5
0 10 20
6.9 8.
1M
odifi
ed fr
om K
litgo
rd e
t al.,
199
5, D
NA
G T
rans
ect E
3
Sh
ady
Dolo
mit
e
Mill
erCo
veth
rust
faul
t
unn
amed
thru
stfa
ult
Gre
atSm
oky
thru
stfa
ult
Sh
ady
Dolo
mit
e
Rom
e Fo
rmat
ion
shal
e
Rom
e Fo
rmat
ion
shal
e &
san
dsto
ne
Con
asau
ga G
roup
Sh
ale
(W) &
Lim
esto
ne
(E)
Wilh
ite
slat
e &
san
dsto
ne
Wilh
ite
slat
e &
san
dsto
ne
Dean
For
mat
ion
& o
lder
roc
ks
(Gre
at S
mok
yG
roup
)
Chic
kam
auga
Gro
up li
mes
ton
e (W
) & s
hal
e (E
)
Youn
ger
rock
s n
ot s
how
n
Wilh
ite
slat
e &
san
dsto
ne
Con
tin
enta
l sh
elf
Mid
dle
Ord
ovic
ian
basi
n
(Sto
p 1)
(Sto
p 2
)
(Sto
p 1
)
(Sto
ps 3
, 9, &
10
)
(Sto
ps 4
& 1
1)
Con
tin
enta
l sh
elf
Atl
anti
c O
cean
Rif
ted
con
tin
enta
lm
argi
n
Rif
ted
con
tin
enta
l mar
gin
Dean
For
mat
ion
san
dsto
ne
con
glom
erat
e, &
sla
te
Chilh
owee
Gro
upsa
nds
ton
e, s
hal
e
Chilh
owee
Gro
up s
ands
ton
e, s
hal
e
Kn
ox G
roup
dolo
mit
e an
d lim
esto
ne
Kn
ox G
roup
dol
omit
e an
d lim
esto
ne
Sev
ier
Sh
ale
(& s
ands
ton
e)
Sev
ier
Sh
ale
(& s
ands
ton
e)
Figu
re 1
. Thr
ee p
ersp
ectiv
es o
f con
tinen
tal m
argi
ns.
(a) D
efor
med
mar
gin
as s
een
on th
e fie
ld tr
ip s
impl
ified
into
a c
olum
n. (
b) A
ncie
nt N
orth
A
mer
ican
mar
gin
in e
aste
rn T
enne
ssee
(was
act
ually
faci
ng s
outh
, rat
her t
han
east
, loc
ated
in th
e so
uthe
rn h
emis
pher
e w
ith th
e eq
uato
r pas
sing
ju
st n
orth
[wes
t] of
her
e).
(c) M
oder
n A
tlant
ic m
argi
n of
f Nor
th C
arol
ina.
J
Volc
anic
rock
s
crus
tR
ift-s
tage
Per
i–G
ondw
anan
rock
sM
oho
T RJ
T RJ
KT
J
JJ
Oce
anic
Oce
anic
crus
tcr
ust
seis
mic
laye
r 2
seis
mic
laye
r 3
6.3
6.3 6.
7
7.2
7.2
5.6
8.17.
0
7.5
3
Blue Ridge Foothills Field Trip
HIG
HL
AN
DS
OF
TH
E W
EST
ER
N B
LU
E R
IDG
E
Gt
Bt
St
Ky
Bt
Gt
St
Ky
05
10
15
20
kil
om
ete
rs
EA
STE
RN
BL
UE
RID
GE
TE
NN
ESS
EE
VA
LL
EY
OF
TH
E V
AL
LE
Y A
ND
RID
GE
83o
00' 35
o 52
'30”
83o
00'
35o
22'3
0”
84o
00'
35o 22
'30”
84o
00'
35o
52'3
0”
Hay
esvi
lle fa
ult
Gat
linb
urg
fau
ltsy
stem
Great
Smoky
fault
syst
em
Mille
r
Cove
fault
Gre
enb
rier
fau
lt
Fau
lts
Fold
s
Iso
gra
ds
Cam
bri
an s
edim
enta
ry ro
cks
Neo
pro
tero
zoic
met
ased
imen
tary
rock
sPa
leoz
oic
sed
imen
tary
rock
s
Mes
op
rote
rozo
ic g
nei
ssC
arto
og
ech
aye
terr
ane
rock
s
Exp
lana
tion
GSF
GSF
GSF
Figu
re 2
. (a)
Sim
plifi
ed g
eolo
gic
map
of t
he G
reat
Sm
oky
Mou
ntai
ns N
atio
nal P
ark
show
ing
the
sim
ple
win
dow
s (T
ucka
leec
hee
Cov
e, T
C; C
ades
Cov
e, C
C; a
nd W
ear C
ove,
WC
) and
the
min
imum
di
spla
cem
ent (
som
e 15
km
) est
imat
ed o
n th
e G
reat
Sm
oky
faul
t (G
SF)
mea
sure
d fro
m s
outh
east
of
Cad
es C
ove
to th
e tra
ce o
f the
faul
t on
the
edge
of t
he V
alle
y an
d R
idge
to th
e no
rthw
est (
red
arro
w).
Gra
y da
shed
line
s ar
e m
etam
orph
ic is
ogra
ds: B
t–bi
otite
. Gt–
garn
et. S
t–S
taur
olite
. Ky–
kyan
ite. (
Mod
ified
by
RD
H fr
om S
outh
wor
th e
t al.,
200
5).
~15 km
5
Blue Ridge Foothills Field Trip
Foot
wal
l bro
ken
sequ
entia
llyfo
rwar
d as
han
ging
wal
l loc
ksan
d m
aste
r fau
lt co
ntin
ues
tom
ove. 1
23
4 Pat
hs o
f fut
ure
thru
sts
Dup
lex
Han
ging
wal
l
Han
ging
wal
l
Foot
wal
l
Uni
t A (w
eak)
Uni
t C (w
eak)
Uni
t B(s
trong
)
Foot
wal
l
Roo
f
12
34
Imbr
icat
efa
ult
bloc
ks(h
orse
s)Fl
oor
Figu
re 3
. For
mat
ion
of a
dup
lex
thru
st s
yste
m fr
om o
rigin
ally
hor
izon
tal s
edim
enta
ry ro
cks.
The
num
bers
indi
cate
the
sequ
ence
of
form
atio
n of
the
bloc
ks (h
orse
s) w
ithin
the
dupl
ex in
seq
uenc
e of
ant
erna
ting
wea
k an
d st
rong
sed
imen
tary
rock
s, w
ith th
e ha
ngin
g w
all l
ocki
ng a
nd b
reak
ing
the
foot
wal
l to
form
blo
ck 1
. Th
e ha
ngin
g w
all p
lus
bloc
k 1
lock
s ag
ain
and
the
foot
wal
l is
brok
en to
form
bl
ock
2, e
tc.
7
Blue Ridge Foothills Field Trip
Osv
Osv
DM
Osv
C
Cr
OC
k
Cc
Cw
pC
Cc
Cc
Cc
Cc
Cc
OC
k
OC
kO
CkOC
kO
Ck
OC
k
OC
k
OC
kO
Ck
Cc
Cc
Cr
Cr
Cr
Cr
Cr
Cr
Om
Om
Osv
pC
Great Smoky fault
Miller Cove fault
Gue
ss
Cre
ekfa
ult
(floo
r)
Gre
at S
mok
yth
rust
(roo
f)
Valle
yan
dR
idge
NW
SE
Blu
e R
idge
Tuck
alee
chee
Cov
e
MillerCove
syncline
Sal
tvill
e fa
ult
OC
kO
Ck
Figu
re 5
. C
ross
sec
tion
from
the
Valle
y an
d R
idge
(NW
) thr
ough
the
front
par
t of t
he B
lue
Rid
ge in
sou
thea
ster
n TN
. Th
e se
ctio
n cr
osse
s Tu
ckal
eech
ee C
ove
and
illus
trate
s th
e m
odel
, bas
ed o
n th
e sm
alle
r-sc
ale
stru
ctur
e ob
serv
ed a
t Ced
ar B
luff,
to e
xpla
in th
e an
tifor
mal
nat
ure
of th
e fa
ults
ben
eath
and
with
in T
ucka
leec
hee
Cov
e w
indo
w a
nd s
yncl
inal
nat
ure
of th
e ro
cks
north
wes
t of t
he
win
dow
. p
– O
lder
rock
s so
uthe
ast o
f Tuc
kale
eche
e C
ove
thru
st u
p al
ong
the
Gre
at S
mok
y fa
ult.
w –
Wilh
ite S
late
and
rela
ted
rock
s.
– C
ambr
ian(
?) to
Cam
bria
n (C
hilh
owee
Gro
up a
nd y
oung
er) r
ocks
of t
he M
iller
Cov
e sy
nclin
e.
r –
Rom
e Fo
rmat
ion.
c
– C
onas
auga
Gro
up.
O k
– K
nox
Gro
up. O
sv–S
evie
r Sha
le. O
m–M
iddl
e O
rdov
icia
n ro
cks.
DM
– D
evon
ian
and
Mis
siss
ippi
an ro
cks.
S
ee F
igur
e 1
for m
ore
info
rmat
ion
abou
t the
nat
ure
of th
ese
rock
s.
C
CC
CC
C
9
Blue Ridge Foothills Field Trip
Figu
re 6
. Pan
oram
ic v
iew
look
ing
E to
war
d C
edar
Blu
ff in
Tuc
kale
eche
e C
ove
win
dow
. R
ocks
exp
osed
her
e al
l bel
ong
to th
e up
per p
art o
f the
Kno
x G
roup
(h
ere
calle
d Jo
nesb
oro
Lim
esto
ne).
The
Gre
at S
mok
y fa
ult t
hat o
verli
es th
ese
rock
s w
ould
be
pres
ent a
long
the
high
est p
art o
f the
ridg
e to
war
d th
e S
E.
Sev
eral
SE
-dip
ping
imbr
icat
e th
rust
faul
ts a
re v
isib
le in
the
bluf
f tha
t pro
duce
d “r
ollo
ver”
ant
iclin
es o
r “sn
akeh
ead”
stru
ctur
es in
the
hang
ing
wal
l. P
hoto
s ta
ken
in D
ecem
ber 2
011
then
com
posi
ted
and
edite
d in
Pho
tosh
op 6
™ J
uly
2012
.
10
Hatcher
FIELD GUIDE
Drive east from Knoxville on U.S. 129 (Alcoa Highway) to Maryville, Tennessee, then southeast on U.S. 321/TN 73 toward the Great Smoky Mountains National Park. Stop at the large cut on the right immediately northwest of Chilhowee Mountain.
STOP 1. Sevier Shale (Middle Ordovician), Guess Creek Block, and Blue Ridge contact (Great Smoky fault), Little River Gap, near Walland, Tennessee. Location: 35.7363° N, 83.8243° W.
PURPOSE:
Glyptograptus teretiusculus, Dicellograptus sp., Reteograptus qeinitizianus, Pseudoclimacograptus sp., Didymograptus sp., Glyptogaptus sp., and Pseudoclimacograptus angulatus
Nemagraptus gracillis Zone or the uppermost Glyptograptus teretiusculus
11
Blue Ridge Foothills Field Trip
Chi
lhow
ee G
roup
rock
s
Sev
ier S
hale
Sev
ier S
hale
Sev
ier S
hale
Sev
ier S
hale
(and
san
dsto
ne)
(Coc
hran
con
glom
erat
e)
Not
e: T
here
are
num
erou
s su
bhor
izon
tal s
licke
nsur
face
spa
ralle
l to
the
face
of t
he c
ut in
dica
ting
sini
stra
l mot
ion.
DE
E
F
NWD
C
B
C
A
BSE
Figu
re 7
. S
ketc
h of
the
road
cut a
t Sto
p 1.
Ske
tch
was
con
stru
cted
in th
e fie
ld fr
om d
etai
led
phot
ogra
phs
of th
e ex
posu
re in
199
2 by
M
ark
W. C
arte
r, G
. Lan
don
Dav
idso
n, a
nd J
ames
A. H
elle
r as
part
of a
term
pro
blem
in a
UTK
gra
duat
e st
ruct
ural
geo
logy
cou
rse
(oth
er
data
they
col
lect
ed a
re n
ot in
clud
ed).
Sha
le, c
m-th
ick
turb
idite
laye
rs, m
inor
lim
esto
ne
San
dsto
ne
San
dsto
ne a
nd c
ongl
omer
ate
Mas
sive
san
dsto
nee
Con
glom
erat
e
Dol
omite
(Kno
x? h
orse
)
Expl
anat
ion
Sevier Shale(Middle Ordovician)
CochranConglomerate
(Lower Cambian)
10 m
eter
s
10 m
eter
s
10 m
eter
s
10 m
eter
s
10 m
eter
s
10 m
eter
s
Gre
at S
mok
y fa
ult
>300
km
dis
plac
emen
t
Chi
lhow
eeG
roup
sand
ston
e
Kno
xD
olom
ite
hors
eS
evie
rS
hale
The
diag
ram
is d
etai
led
enou
gh th
at y
ou s
houl
d be
abl
e to
loca
te y
ours
elf i
n th
is d
iagr
am a
s yo
u w
alk
alon
g an
d lo
ok a
t the
exp
osur
e.
12
Hatcher
NOTE:
NOTE: This is a stop where undergraduates are instructed in measuring planar structures and the differ-
the other fold-dominated where they are introduced to measuring planar structures and folds with a Brunton
Cove.
STOP 2. Miller Cove Syncline. Location: 35.7234° N, 83.8189° W.
PURPOSE:
3
13
Blue Ridge Foothills Field Trip
NOTE:
and metamorphism.
Continue southeastward along U.S. 321/TN 73. Note the sudden appearance of darker-colored, more highly
and are in more highly deformed and metamorphosed (chlorite grade—note the greenish color, some due to
STOP 3. Tightly Folded and Cleaved Wilhite Formation (Walden Creek Group). Location: 35.6981° N, 83.8091° W.
PURPOSE:
NOTE:
explain the relationships in the small mesoscopic fold exposed here. This is one of the places in the world
Continue southeastward on U. S. 321/TN 73.
14
Hatcher
Figure 8. Folds at Stop 3. Note the shape of the folds compared with any you might have seen before in the Valley and Ridge, along with the presence of slaty cleavage. Also see the photo on the left on the front cover of the guidebook for another fold located ~25 m to the NW.
15
Blue Ridge Foothills Field Trip
(a)
(b)Figure 9. (a) Overturned fold in Wilhite Slate following reworking of the roadcut along US 321 in 2012 by the Tennessee Department of Transportation (compare with the fold on the cover of the guidebook as it appeared before the weathered material was removed). The asymmetry of the fold and the thickening in the anticlinal hinge are still quite evident, and the bedding surface to the left still exposes slickenfibers of chlorite and Fe oxides (not visible in the photo), attesting to the multiple mechanism of folding. The light-colored nearly vertical material in the fresh rock to the upper left are thin zones of recrystallized quartz oriented parallel to cleavage, not visible in the old exposure. (b) Primary sedimentary structures exposed by the reworking of the roadcut. These features were not visible before, and serve as way-up indicators.
16
Hatcher
STOP 4. Graded Beds in Channels in Upper Dean Formation (Great Smoky Group beneath Wilhite Slate). Location: 35.6900° N, 83.7978° W.
PURPOSE:
NOTE: This is a great place to introduce the concept of strain partitioning, especially when students get out of the vans expecting to look at sedimentological features, which are rather spectacular here.
then immediately turn right and drive ~1 mi (1.6 km) to a small exposure of dolostone on the left side of the road.
xxxxx
xx
xx xxxxxxxxxx
xx x
β
Figure 10. Equal-area plot of structural measurements in Wilhite Slate from Maddens Branch locality on US 64 in SE Tennessee (From Hatcher et al., 1978, their Fig. 15). Red dots—25 poles to bedding (S0). x—location of the pole to the great circle (dashed line) best fit for the bedding data (β). Purple dots—21 fold axes. Purple xs—poles to the same 21 fold axial surfaces. Green dots—23 poles to cleavage (S1). Compare this small dataset with the plots of a larger dataset from the same rock unit distributed over a large area in SE Tennessee in Hatcher (1995, his Fig. 18–13).
17
Blue Ridge Foothills Field Trip
STOP 5. Great Smoky Fault at the Northwest Side of Tuckaleechee Cove. Location: 35.6923° N, 83.7710° W.
PURPOSE:
to view a vertical cliff to the northeast.
STOP 6. Cedar Bluff inside Tuckaleechee Cove. Location: 35.6775° N, 83.7204° W.
PURPOSE:
their
NOTE:
Return to U.S. 321/TN 73 stoplight. Turn right and continue eastward on US 321 toward Pigeon Forge. Turn left
18
Hatcher
Ced
arB
luff
83°4
7'30
"35
°42'
30"
83°4
7'30
"35
°37'
30"
83°4
2'30
"35
°42'
30"
10.
50
1 m
ile
10.
50
1 ki
lom
eter
O�k
Osv
Zm
Osv
O�k
O�k
O�k
O�k
O�k
O�k
O�k
Osv
Osv
O�k
Osv
Osv
Osv
O�kOsv
Osv
O�k
Osv
O�k
O�k
Osv
Osv
Osv
Zm
Zm
Roo
f thr
ust
Imbr
icat
e th
rust
Hig
h-an
gle
faul
t
Lith
olog
ic c
onta
ct
Lith
olog
ic c
onta
ct(a
ppro
xim
ate)
N
Osv
O�k
Zm
Sev
ier S
hale
Kno
x G
roup
Met
calf
Phy
llite
Figu
re 1
1. D
etai
led
geol
ogic
map
of t
he in
terio
r of T
ucka
leec
hee
Cov
e w
indo
w (b
y R
DH
and
J. O
. Cos
tello
, 19
86, o
rigin
ally
pub
lishe
d in
Hat
cher
et a
l., 1
989,
and
mod
ifyin
g a
geol
ogic
map
by
Neu
man
and
Nel
son,
19
65).
Das
hed
faul
ts c
ross
ing
the
win
dow
wer
e m
appe
d by
trac
ing
zone
s of
sha
le c
hips
of S
evie
r Sha
le
sepa
ratin
g th
e fa
ults
in th
e K
nox
Dol
omite
. E
lect
roni
c gr
aphi
c by
J. R
yan
Thig
pen,
200
4.
19
Blue Ridge Foothills Field Trip
STOP 7. Great Smoky fault at east end of Tuckaleechee Cove.
PURPOSE:
STOP 8. Views from Foothills Parkway
PURPOSE:
NOTE:type, structure, and topography. My common practice here is to place the geologic map on the ground along
STOP 9. Fold on Chilhowee Lake
PURPOSE:
20
Hatcher
TN
TN
73
73
MH
/RD
H '0
4
Jon
esb
oro
Lim
esto
ne
Jone
sbor
o
Lim
esto
ne
Gre
at S
mo
ky (
roo
f ) t
hru
st
Ojb
Ojb
Ojb
Zp
Ojb
Figu
re 9
. S
ketc
h of
Ced
ar B
luff
mad
e fro
m p
hoto
grap
hs.
Ojb
ñ J
ones
boro
Lim
esto
ne (u
pper
Kno
x G
roup
). p�
p ñ
Pig
eon
Silt
ston
e.
Orig
inal
dra
win
g by
Lib
by M
artin
, 198
6; e
lect
roni
c ve
rsio
n by
Mar
k H
unte
r and
RD
H, 2
004.
Figu
re 1
2. S
ketc
h of
Ced
ar B
luff
mad
e fro
m p
hoto
grap
hs (s
ee F
ig. 6
). O
jb—
Jone
sbor
o Li
mes
tone
(upp
er K
nox
Gro
up).
Zp—
Pig
eon
silts
tone
. O
rigin
al d
raw
ing
by L
ibby
Mar
tin, 1
986;
ele
ctro
nic
grap
hic
by M
ark
Hun
ter a
nd R
DH
, 200
4.
21
Blue Ridge Foothills Field Trip
Figu
re 1
3. E
xpos
ure
of th
e G
reat
Sm
oky
faul
t on
US
321
at t
he e
ast e
nd o
f Tuc
kale
eche
e C
ove
win
dow
. Th
e lig
ht-c
olor
ed
foot
wal
l roc
ks b
elon
g to
the
Knn
ox G
roup
(her
e ca
lled
Jone
sbor
o Li
mes
tone
), w
hile
the
hang
ing
wal
l roc
ks a
re c
last
ic ro
cks
belo
ngin
g to
one
of t
he P
reca
mbr
ian
or o
lder
Cam
bria
n cl
astic
uni
ts.
The
ffaul
t zon
e is
rath
er th
in a
nd th
e ro
cks
bene
ath
rela
tivel
y un
defo
rmed
for a
faul
t with
400
km
of d
ispl
acem
ent.
The
pla
nar f
abric
in th
e ha
ngin
g w
all r
ocks
is a
lso
an o
lder
fo
liatio
n.
23
Blue Ridge Foothills Field Trip
(a)
(b)
Figure 14. Recumbent fold in Wilhite Slate on U.S. 129 ALONG Chilhowee Lake. (a) View from perpendicular to the roadcut. (b) View parallel to the hinge of the fold.
24
Hatcher
Figu
re 1
5. F
olds
of b
eddi
ng d
evel
oped
par
alle
l to
slat
y cl
eava
ge—
pass
ive
slip
fold
s? U
.S. 1
29 o
n C
hilh
owee
Lak
e.
25
Blue Ridge Foothills Field Trip
Figu
re 1
6. In
terb
edde
d fin
e sa
ndst
one
and
slat
e w
ith a
car
bona
te d
ebris
flow
at t
he ri
ght s
ide
of th
e ph
oto.
The
sm
all f
old,
and
oth
er s
truct
ures
not
vis
ible
in th
is
view
, pro
vide
hin
ts th
at th
ese
rock
s m
ay b
e ov
ertu
rned
.
26
Hatcher
STOP 11. Conglomerate at Chilhowee Dam
PURPOSE:
End of Trip. Return to Maryville and Knoxville.
REFERENCES CITED
in
27
Blue Ridge Foothills Field Trip
(a)
(b)
Figure 17. Sedimentological and structural features in roadcut across US 129 from Chilhowee Dam. (a) Slate pebbles with vein quartz pebbles stuck to them providing the appearance that the slate pebbles were mudballs when they were deposited and accreted pebbles suggesting they may have become armored. Orange-weathering clasts are carbonate. (b) Slate and carbonate cobbles in a matrix dominated by white vein quartz. Small dark objects in the limestone cobble are quartz grains, most of which are composed of clear quartz and may be frosted. Pocketknife is 8.5 cm long.