Embed Size (px)
Citation preview
INTERNATIONAL WORKSHOP ON COMPARATIVE STUDIES
OF THE NORTH ANATOLIAN FAULT (NORTHWEST TURKEY) AND THE SAN ANDREAS FAULT (SOUTHERN CALIFORNIA)
ISTANBUL TECHNICAL UNIVERSITY
AUGUST 14-18, 2006
ƒ
AGENDA
The North Anatolian Fault in Turkey and the San Andreas Fault in California are two major continental transform faults that share many characteristics. Both fault systems are right-lateral transforms that slip at rates of 20-35 mm/yr and endanger metropolitan areas with huge populations: Istanbul (13 million) and Los Angeles (17 million). This international workshop has the following objectives: • Initiate comparative studies of the North Anatolian Fault and the San Andreas Fault; • Formalize collaborations between the Southern California Earthquake Center and a consortium of research institutions in Turkey; • Plan multinational projects designed to improve seismic hazard assessments in southern California and northwest Turkey. Keynote presentations will highlight issues that are not well understood, identify gaps in data or theory, suggest how comparative studies could help address these issues, and outline possible investigative strategies. Panel-led discussions will facilitate the exchange of ideas during the workshop, and participants are encouraged to prepare posters. In the afternoon, participants will break into sub-groups and be tasked with addressing specific issues and discussing investigative strategies that could address these issues. Posters will be displayed on the walls of the broad halls and common areas, grouped by relevant themes to facilitate discussions in breakout groups. On the third day, the task will be to delineate possible multinational projects. Keynote speakers will present emerging techniques and approaches that could be applied to earthquake sciences, and
INTERNATIONAL WORKSHOP ON COMPARATIVE STUDIES OF THE NORTH ANATOLIAN FAULT (NORTHWEST TURKEY) AND THE SAN ANDREAS FAULT (SOUTHERN CALIFORNIA)
2
breakout groups will focus on various themes and projects. By the end of the workshop, it is anticipated that each breakout groups will provide a 1-2 page document outlining strategies for future projects. These will be compiled in the workshop report. Abstracts describing the participants’ relevant research and a tentative strategy are posted onto the following site (to be mirrored at ITU): http://projects.crustal.ucsb.edu/NAF-SAF-2006 Two 1-day field trips to the North Anatolian Fault will immediately follow the 3-day workshop. August 17 will be spent along the Izmit-Yalova segments on the North Anatolian Fault, and August 18 along the Ganos fault segment. Participants may join either one, or both field trips. Registration needs to be done separately for each of the field trips via email to Cenk Yaltirak ([email protected]), with “Cc.” to Marie-Helene Cormier ([email protected]) and Christopher Sorlien ([email protected]). Organizing Committee (alphabetical): Naci Görür, Chair, Istanbul Technical University, Turkey Sinan Akciz, University of California -Irvine, USA Namik Çagatay, Istanbul Technical University, Turkey Mehmet Celebi, US Geological Survey, USA Marie-Helene Cormier, University of Missouri -Columbia, USA Thomas Jordan, University of Southern California, USA Geoffrey King, Institute of Physics of the Earth, Paris, France Koji Okumura, Hiroshima University, Japan Robert Reilinger, Massachusetts Institute of Technology, Cambridge, USA Thomas Rockwell, San Diego State University, USA Leonardo Seeber, Columbia University, NY, USA Celal Sengör, Istanbul Technical University, Turkey Christopher Sorlien, University of California -Santa Barbara, USA Nafi Toksöz, Massachusetts Institute of Technology, Cambridge, USA Cenk Yaltirak, Istanbul Technical University, Turkey
14 A
UG
UST
200
6 M
ON
DA
Y
09.0
0-09
.25
REG
ISTR
ATI
ON
09
.25-
09.3
5 W
ELC
OM
E 09
.35-
10.0
5 N
aci G
ÖR
ÜR
, Ist
anbu
l Tec
hnic
al U
nive
rsity
G
eolo
gica
l and
geo
phys
ical
stud
ies o
n th
e No
rth A
nato
lian
Faul
t in
the
Sea
of M
arm
ara
since
the
1999
ear
thqu
akes
10.0
5-10
.35
Thom
as J
OR
DA
N, U
nive
rsity
of S
outh
ern
Cal
iforn
ia &
Sou
ther
n C
alifo
rnia
Ear
thqu
ake
Cen
ter (
SCEC
) Th
e SC
EC’s
pro
gram
of e
arth
quak
e sy
stem
scie
nce
in so
uthe
rn C
alifo
rnia
10
.35-
10.5
0 C
offe
e B
reak
SE
SSIO
N-1
TH
E N
OR
TH A
NA
TOLI
AN
AN
D S
AN
AN
DR
EAS
FAU
LT S
YST
EMS
10.5
0-11
.20
A.M
.Cel
al Ş
ENG
ÖR
, Ist
anbu
l Tec
hnic
al U
nive
rsity
Th
e No
rth A
nato
lian
Faul
t 11
.20-
11.5
0 Ja
mes
DO
LAN
, Uni
vers
ity o
f Sou
ther
n C
alifo
rnia
Co
mpa
rison
of p
aleo
seism
olog
ical
evi
denc
e fo
r pat
tern
s of e
arth
quak
e oc
curr
ence
on
the
North
Ana
tolia
n an
d Sa
n An
drea
s Fau
lts: T
he im
porta
nce
of st
ruct
ural
con
text
11
.50
LUN
CH
SE
SSIO
N-2
EV
OLU
TIO
N O
F TR
AN
SFO
RM
SY
STEM
S FR
OM
DEC
AD
AL
TO M
ILLI
ON
-YEA
R T
IMES
CA
LES
13.1
5-13
.40
Dav
id B
OW
MA
N, C
alifo
rnia
Sta
te U
nive
rsity
, Ful
lerto
n Sl
ip p
artit
ioni
ng a
nd re
gion
al st
ress
fiel
ds fr
om g
eom
etric
ally
irre
gula
r fau
lts
13.4
0-14
.05
Ara
l OK
AY
, Ist
anbu
l Tec
hnic
al U
nive
rsity
Ev
olut
ion
of tr
ansfo
rm b
asin
s and
ridg
es w
ith sp
ecia
l ref
eren
ces t
o th
e M
arm
ara
Sea
14.0
5-14
.30
Ism
ail K
USÇ
U, G
ener
al D
irect
orat
e of
Min
eral
and
Res
earc
h an
d Ex
plor
atio
n (M
TA),
Ank
ara
Step
over
geo
met
ry in
the
Gem
lik B
ay o
n th
e so
uthe
rn st
rand
of t
he N
orth
Ana
tolia
n Fa
ult
14.3
0-15
.00
Pane
l-led
dis
cuss
ion
15.0
0-15
.15
CO
FFEE
BR
EAK
SE
SSIO
N-3
FA
ULT
KIN
EMA
TIC
S: H
OLO
CEN
E EA
RTH
QU
AK
E C
YC
LES
15.1
5-15
.40
Thom
as R
OC
KW
ELL,
San
Die
go S
tate
Uni
vers
ity
Pale
osei
smol
ogy
of th
e 19
12, 1
944
and
1999
rup
ture
s on
the
North
Ana
tolia
n fa
ult:
Impl
icat
ions
for
late
Hol
ocen
e pa
ttern
s of s
train
rele
ase
15
.40-
16.0
5 El
izab
eth
HEA
RN
, Uni
vers
ity o
f Brit
ish
Col
umbi
a, V
anco
uver
D
ynam
ics o
f the
Nor
th A
nato
lian
and
San
Andr
eas f
ault
zone
s: H
ypot
hese
s, m
odel
s, an
d op
en q
uesti
ons.
16
.05-
16.3
0 R
ober
t REI
LIN
GE
R, M
assa
chus
etts
Inst
itute
of T
echn
olog
y, C
ambr
idge
, &
Sem
ih E
RG
INTA
V, M
arm
ara
Res
earc
h C
ente
r, G
ebze
Sp
ace
geod
etic
con
strai
nts o
n th
e ea
rthqu
ake
defo
rmat
ion
cycl
e al
ong
the
North
Ana
tolia
n Fa
ult
DIS
CU
SSIO
NS
IN B
REA
KO
UT
GR
OU
PS
16.4
0-18
.20
Topi
cs w
ill b
e se
lect
ed fr
om fo
llowi
ng li
st or
oth
er su
gges
tions
: W
hat f
acto
rs a
ccou
nt fo
r tim
e-va
ryin
g be
havi
or, w
hy th
e di
ffer
ence
s bet
wee
n SA
F an
d N
AF?
W
hat d
rives
ver
tical
mot
ions
?
Stra
in p
artit
ioni
ng v
ersu
s obl
ique
mot
ion
Effe
cts o
f pre
-exi
stin
g st
ruct
ures
on
the
orie
ntat
ion
and
evol
utio
n of
act
ive
ones
C
ontro
vers
ies:
con
tinue
d pu
ll-ap
art e
xten
sion
, ces
satio
n of
ext
rem
e ex
tens
ion,
dip
ping
faul
ts?
Faul
t ben
ds, p
artia
lly b
lind
faul
ts, s
lip p
artit
ioni
ng, a
nd o
bliq
ue sl
ip?
Qua
ntita
tive
stru
ctur
al m
odel
s for
mea
ning
ful c
ompa
rison
s of t
he N
orth
Ana
tolia
n an
d Sa
n A
ndre
as fa
ult s
yste
ms
How
is st
ress
acc
omm
odat
ed a
nd tr
ansf
erre
d du
ring
the
earth
quak
e cy
cle?
V
ertic
al a
xis r
otat
ion
and
affe
ct o
n di
spla
cem
ent o
n do
mai
n-bo
undi
ng fa
ults
. D
iscr
imin
atin
g lo
adin
g de
term
ined
from
GPS
on
sub-
para
llel d
eepl
y-lo
cked
faul
ts.
Bas
in e
ffec
ts o
n G
PS d
ata
(flu
ids,
sedi
men
t com
pact
ion)
. G
PS d
efor
mat
ion
mod
eled
usi
ng 3
D fa
ult r
epre
sent
atio
ns.
15 A
UG
UST
200
6, T
UES
DA
Y
09
.00-
09.4
5 B
reak
out g
roup
s rep
ortin
g on
dis
cuss
ion
from
pre
viou
s day
SESS
ION
-4
FAU
LT R
UPT
UR
ES: S
EGM
ENTA
TIO
N, T
RIG
GER
ING
, CLU
STER
ING
09
.45-
10.1
0 Su
san
HO
UG
H, U
S G
eolo
gica
l Sur
vey,
Pas
aden
a Re
mot
ely
trigg
ered
ear
thqu
akes
10
.10-
10.3
5
Susa
na C
UST
OD
IO, U
nive
rsity
of C
alifo
rnia
San
ta B
arba
ra
The
Park
field
sect
ion
of th
e Sa
n An
drea
s Fau
lt, C
alifo
rnia
: Chr
acat
erist
ic o
r com
plem
enta
ry e
arth
quak
e ru
ptur
es?
10.3
5-10
.50
CO
FFEE
BR
EAK
SESS
ION
-5
DET
AIL
ED S
TRA
TIG
RA
PHIC
STU
DIE
S, F
IELD
STU
DIE
S, A
ND
SEI
SMO
TEC
TON
ICS
10.5
0-11
.15
Nam
ik Ç
AG
ATA
Y, I
stan
bul T
echn
ical
Uni
vers
ity
Late
Qua
tern
ary
strat
igra
phy
and
sedi
men
tolo
gy o
f the
Mar
mar
a Se
a: Im
plic
atio
ns fo
r tec
toni
c stu
dies
11
.15-
11.4
0 A
li K
OC
YIG
IT, M
iddl
e Ea
st te
chni
cal U
nive
rsity
(MET
U),
Ank
ara
The
trans
ition
zone
bet
ween
the
exte
nsio
nal a
nd st
rike-
slip
neot
ecto
nic
regi
mes
in so
uthe
rn M
arm
ara
regi
on:
Burs
a G
rabe
n 11
.40-
12.0
5 O
kan
TÜY
SÜZ,
Ista
nbul
Tec
hnic
al U
nive
rsity
M
orph
otec
toni
c fe
atur
es a
long
the
Tosy
a-H
avza
segm
ent o
f the
Nor
th A
nato
lian
Faul
t 12
.05-
12.3
0 C
raig
NIC
HO
LSO
N, U
nive
rsity
of C
alifo
rnia
– S
anta
Bar
bara
Co
mbi
ning
hig
h-re
solu
tion
clim
ate
studi
es a
nd te
cton
ics:
Imag
ing
com
plex
fold
ing
in 4
diim
ensio
ns a
bove
act
ive
blin
d fa
ults
12.3
0-13
.00
PAN
EL-L
ED D
ISC
USS
ION
13.0
0 LU
NC
H
SESS
ION
-6
EAR
THQ
UA
KE
HA
ZAR
DS
14
.15-
14.4
0 M
usta
fa E
RD
IK, K
andi
lli O
bser
vato
ry a
nd E
arth
quak
e R
esea
rch
Inst
itute
, Ist
anbu
l As
sess
men
t of e
arth
quak
e ha
zard
in M
arm
ara
Regi
on, T
urke
y 14
.40-
15.0
5 K
im O
LSEN
, San
Die
go S
tate
Uni
vers
ity
Tera
Shak
e: L
arge
-sca
le s
imul
atio
n of
gro
und
mot
ion
in L
os A
ngel
es fo
r a
M7.
7 ea
rthqu
ake
on th
e so
uthe
rn S
an
Andr
eas F
ault
15.0
5-15
.30
Sina
n O
ZER
EN, I
stan
bul T
echn
ical
Uni
vers
ity
A se
mi-s
pect
ral a
ppro
ach
for t
he m
athe
mat
ical
mod
elin
g fo
r the
und
erwa
ter l
ands
lide
tsuna
mi s
cena
rios i
n th
e Se
a of
Mar
mar
a 15
.30-
15.4
5 C
OFF
EE B
REA
K
SE
SSIO
N-7
PO
STER
S &
DIS
CU
SSIO
NS
15.4
5-17
.15
Poste
r titl
es li
sted
on fo
llowi
ng p
ages
17
.15-
18.3
0
DIS
CU
SSIO
NS
IN B
REA
KO
UT
GR
OU
PS
Topi
cs to
be
sele
cted
from
follo
wing
list
or o
ther
sugg
estio
ns m
ade
durin
g th
e wo
rksh
op:
Stre
ss lo
adin
g an
d ea
rthqu
ake
clus
terin
g.
Com
plex
faul
t geo
met
ries,
rock
type
, rup
ture
pat
tern
s, an
d dy
nam
ics o
f fau
lt ru
ptur
e M
icro
seis
mic
ity a
nd fa
ult z
one
prop
ertie
s Th
e ne
ed fo
r qua
lity
stra
tigra
phy
to c
hara
cter
ize
tect
onic
evo
lutio
n an
d de
form
atio
n ra
tes
Dua
l use
of h
igh-
reso
lutio
n se
ism
ic d
ata
and
core
s for
pal
eocl
imat
e an
d pa
leos
eism
olog
y Fl
uid
flow
alo
ng fa
ult z
ones
, and
its i
mpa
ct o
n ea
rthqu
akes
D
oes s
hallo
w v
eloc
ity st
ruct
ure
near
faul
t aff
ect g
roun
d m
otio
ns a
t dis
tant
site
? A
sses
sing
tsun
ami a
nd la
ndsl
ide
haza
rds
16 A
UG
UST
200
6, W
EDN
ESD
AY
09.0
0-09
.45
Rep
orts
from
the
brea
kout
gro
ups f
rom
pre
viou
s day
SESS
ION
-9
STR
ATE
GIE
S FO
R M
ULT
INA
TIO
NA
L A
ND
MU
LTID
ISC
IPLI
NA
RY
INV
ESTI
GA
TIO
NS
09
.45-
10.0
5 Th
omas
JO
RD
AN
Co
llabo
rato
ry fo
r the
Stu
dy o
f Ear
thqu
ake
Pred
icta
bilit
y 10
.05-
10.2
5 N
aci G
ÖR
ÜR
St
rate
gies
for f
utur
e in
vesti
gatio
ns o
f the
Nor
th A
nato
lian
Faul
t
10.2
5-10
.40
CO
FFEE
BR
EAK
SE
SSIO
N-1
0
EMER
GIN
G T
ECH
NO
LOG
IES
FOR
FA
ULT
IMA
GIN
G A
ND
MO
NIT
OR
ING
10.4
0-11
.00
Dav
id C
HA
DW
ELL,
Scr
ipps
Oce
anog
raph
ic In
stitu
tion,
San
Die
go
Und
erwa
ter g
eode
tic m
onito
ring
11.0
0-11
.20
Mik
e JA
CK
SON
, UN
AV
CO
(Uni
vers
ity N
AV
star
CO
nsor
tium
), B
ould
er
The
Earth
Scop
e Pl
ate
Boun
dary
Obs
erva
tory
11
.20-
11.4
0 R
olan
d PE
RSO
N, I
frem
er, B
rest
ES
ONE
T: T
he E
urop
ean
Seaf
loor
Obs
erva
tory
NET
work
11
.40-
12.1
5 PA
NEL
-LED
DIS
CU
SSIO
N
12
.15-
13.3
0 LU
NC
H
SE
SSIO
N-1
1
REC
ENT,
ON
-GO
ING
, OR
UPC
OM
ING
INV
ESTI
GA
TIO
NS
ALO
NG
TH
E N
OR
TH A
NA
TOLI
AN
FA
ULT
AN
D T
HE
SAN
AN
DR
EAS
FAU
LT
13
.30
Pier
re H
ENR
Y, C
olle
ge d
e Fr
ance
, Aix
-en-
Prov
ence
C
old
seep
s alo
ng th
e m
ain
Mar
mar
a Fa
ult:
Con
text
and
per
spec
tives
for m
onito
ring
13.4
5 Em
in D
EMIR
BAG
, Ist
anbu
l Tec
hnic
al U
nive
rsity
M
icha
el S
TEC
KLE
R, L
amon
t-Doh
erty
Ear
th O
bser
vato
ry, P
alis
ades
Se
ismic
refle
ctio
n su
rvey
s in
the
Mar
mar
a Se
a 14
.00
Öm
er E
MR
E, G
ener
al D
irect
orat
e of
Min
eral
Res
earc
h an
d Ex
plor
atio
n (M
TA),
Ank
ara
Sina
n A
KC
IZ, U
nive
rsity
of C
alifo
rnia
, Irv
ine
Stat
us o
f pal
eose
ismol
ogic
al st
udie
s alo
ng S
AF &
NAF
14
.15
Gül
sen
UÇ
AR
KU
S, Is
tanb
ul T
echn
ical
Uni
vers
ity
(Ten
tativ
e) T
he R
ELIE
F pr
ojec
t alo
ng th
e No
rth A
nato
lian
Faul
t (RE
Liab
le In
form
atio
n on
Ear
thqu
ake
Faul
ting)
14
.30
Hay
rulla
h K
AR
ABU
LUT,
Bog
azic
i Uni
vers
ity, I
stan
bul
Stat
us o
f sei
smom
eter
net
work
s, in
clud
ing
OBS
, in
NW T
urke
y 14
.45
Sem
ih E
RG
INTA
V, M
arm
ara
Res
earc
h C
ente
r (M
AM
) G
PS m
onito
ring
of th
e No
rth A
nato
lian
Faul
t 15
.00
Chr
istop
her
SOR
LIEN
, Uni
vers
ity o
f Cal
iforn
ia, S
anta
Bar
bara
Co
mm
unity
faul
t, str
atig
raph
ic, a
nd 3
D se
ismic
vel
ocity
mod
els f
or so
uthe
rn C
alifo
rnia
and
Nor
thwe
st Tu
rkey
15
.15
PAN
EL-L
ED D
ISC
USS
ION
15.4
5 C
OFF
EE B
REA
K A
ND
PO
STER
S
16
.30-
18.0
0 D
ISC
USS
ION
IN B
REA
KO
UT
GR
OU
PS
Topi
cs to
be
sele
cted
from
the
follo
wing
list
and
othe
r sug
gesti
ons m
ade
durin
g th
e wo
rksh
op:
Stra
tegi
es fo
r qua
ntita
tive
com
paris
on b
etw
een
Nor
th A
nato
lian
and
San
And
reas
faul
t sys
tem
s. Po
tent
ial f
or q
uant
itativ
e co
mpa
rison
usi
ng si
mila
r com
mun
ity fa
ult m
odel
s U
nder
wat
er m
onito
ring
of fa
ult a
ctiv
ity: s
eaflo
or o
bser
vato
ries
SCEC
-like
eff
ort o
n pa
leos
eism
olog
y (in
clud
es la
kes a
nd se
a)
Dat
a di
strib
utio
n an
d ar
chiv
ing:
bui
ldin
g an
ope
n so
urce
and
free
acc
ess d
atab
ase
for t
he N
AF
Man
y of
the
them
es w
ill b
e de
linea
ted
by p
artic
ipan
ts d
urin
g th
e w
orks
hop.
So
me
prob
able
them
es fo
llow
. • I
mpl
emen
tatio
n of
a u
nifie
d fa
ult,
stra
tigra
phic
, and
seis
mic
vel
ocity
repr
esen
tatio
n of
the
seve
ral s
trand
s and
faul
t bl
ocks
of t
he N
orth
Ana
tolia
n Fa
ult z
one,
with
initi
al fo
cus o
n no
rthw
est T
urke
y, in
clud
ing
seis
mic
ity in
form
atio
n an
d G
PS d
ata.
• S
ubm
arin
e ob
serv
ator
y to
mon
itor a
ctiv
ities
alo
ng th
e N
orth
Ana
tolia
n Fa
ult b
enea
th th
e M
arm
ara
Sea.
A se
aflo
or
obse
rvat
ory
wou
ld n
ot o
nly
prov
ide
new
insi
ght i
nto
subm
erge
d co
ntin
enta
l tra
nsfo
rm fa
ults
, it m
ight
als
o pr
ovid
e cr
itica
l war
ning
s sho
uld
anom
alou
s act
iviti
es b
e de
tect
ed.
• Exp
andi
ng a
com
preh
ensi
ve, p
erm
anen
t ons
hore
/off
shor
e ge
odet
ic a
rray
in T
urke
y.
• Ext
endi
ng in
vest
igat
ions
to th
e re
gion
surr
ound
ing
the
Nor
th A
nato
lian
Faul
t: A
egea
n Se
a an
d So
uthw
est T
urke
y.
• Stra
tegi
es fo
r pro
duci
ng a
hig
h qu
ality
stra
tigra
phy
(off
shor
e an
d on
shor
e) fo
r qua
ntify
ing
long
-term
tect
onic
rate
s;
Poss
ible
role
for E
MC
OL
(Eas
tern
Med
iterr
anea
n C
entre
of O
cean
ogra
phy
and
Lim
nolo
gy) a
nd IO
DP
in a
ddre
ssin
g te
cton
ic e
volu
tion
of M
arm
ara
Sea.
19.0
0:
BO
SPH
OR
US
DIN
NER
CR
UIS
E !!
INTERNATIONAL WORKSHOP ON COMPARATIVE STUDIES OF THE NORTH ANATOLIAN FAULT (NORTHWEST TURKEY) AND THE SAN ANDREAS FAULT (SOUTHERN CALIFORNIA)
9
FIELD TRIP TO THE NORTH ANATOLIAN FAULT SYSTEM BETWEEN IZMIT AND YALOVA
THURSDAY, AUGUST 17
Field Trip Leaders: Omer Emre, Volkan Ozaksoy and Namik Cagatay
The northern strand of the North Anatolian Fault System passes through Sea of Marmara. The 17 August 1999 Izmit earthquake (Mw 7.4) was originated from eastern section of the northern strand of the North Anatolian Fault System. The earthquake produced 150 km-long multi-segment surface rupture between Yalova and Duzce basin. The whole surface rupture is subdivided into six geometric segments. Western part of the Izmit rupture extends in the Gulf of Izmit in E-W direction. However, some part of the rupture zone observed onshore around the area of Golcuk and Hersek promontory in the east of Yalova. Several surveys were performed both in the Sea of Marmara including Izmit bay and on land to understand the structural geometry of the North Anatolian fault zone. The objective of this trip is to exhibit characteristics of the western segments of the 1999 Izmit rupture and related tectonic deformations in a broad zone along the NAF on land. FIELD TRIP PROGRAM Departure: 08.00 am/ front of Faculty of Mines Building of ITU 08 00: -10 00 Transportation from ITU to Golcuk town 10.00-11.00 Stop 1: Ford Otosan Factory-Kavaklı District/Golcuk Town Normal faulting associated with the 1999 Izmit earthquake in Golcuk releasing stepover between Tepetarla and Golcuk segments. Also lateral spreading and submerged coastal zone along the Hisardere delta on the northern block of the normal fault. 11.15. 11.45 Stop 2:Yuzbasilar District/Golcuk Town A 4.30 m of right lateral displacement on a road and the stone-wall on the eastern section of Golcuk segment of the 1999 Izmit rupture in town of Golcuk 12.30-13.00 Stop 3: Kaytazdere/ East of Altinova town Uplifted Tyrrhenian Terrace on the southern coast of Izmit bay 13.00-14.00 Lunch Break/Altınova 14.30: 16.30
INTERNATIONAL WORKSHOP ON COMPARATIVE STUDIES OF THE NORTH ANATOLIAN FAULT (NORTHWEST TURKEY) AND THE SAN ANDREAS FAULT (SOUTHERN CALIFORNIA)
10
Stop 4: Hersek promontory/North of Altınova town Hersek ridge, uplifted Late Holocene paleoshorelines due to thrust faulting on the Hersek restraining bend between Yalova and Golcuk segments of the 1999 Izmit rupture. 17.00-17.30 Stop 5: South of Yalova Çukurköy normal fault on the northern margin of the Armutlu peninsula 18.20: Return to Istanbul Estimated Arrival time to Faculty of Mines-ITU at 20.30
The map showing route and stops of the 17 August 2006 the North Anatolian Fault Trip between Yalova and İzmit.
INTERNATIONAL WORKSHOP ON COMPARATIVE STUDIES OF THE NORTH ANATOLIAN FAULT (NORTHWEST TURKEY) AND THE SAN ANDREAS FAULT (SOUTHERN CALIFORNIA)
11
FIELD TRIP TO THE NORTH ANATOLIAN FAULT SYSTEM IN THRACE: THE GANOS FAULT SEGMENT
FRIDAY, AUGUST 18
Field trip leaders: Aral Okay, Cenk Yaltırak and Nano Seeber
Maximum number of participants: 35 Transportation by one or two minibusses The Ganos fault is the 45-km long segment of the North Anatolian Fault between the Marmara and Aegean seas. Recent apatite fission track data indicate that the it has a history going back at least to the Oligocene. The aim of the excursion is to study the structures and morphology associated with the eastern part of the Ganos fault zone. In the Marmara Sea the North Anatolian fault (NAF) forms a 17° bend between the Central Marmara and Ganos fault segments. The bend is associated with the formation of the 1100-m-deep Tekirdağ basin and the adjoining 924- m-high Ganos mountain. Structurally the Ganos mountain forms a crustal scale monocline with its steep limb abutting against the Ganos fault. The Ganos mountain is made up of Eocene turbidites deformed into recumbent kink-folds and cut by normal faults. A similar Eocene turbidite series, but with olistostrome horizons comprising blocks of blueschist, serpentinite, diabase and Eocene reefal limestone blocks, crops out south of the Ganos fault. This series is overlain through an angular unconformity by terrigeneous to shallow marine Miocene sandstones and conglomerates. Marine terrace deposits are present both north and south of the Ganos fault suggesting that both sides of the fault are being uplifted with respect to the sea level. Principal sights during the excursion: Marine terraces at Marmara Ereglisi and Gazikoy, recumbent kink-folds and normal faults in the steep limb of the Ganos monocline, Ganos Fault zone at Gazikoy and at Golcuk, Miocene south of the Ganos fault, the unconformity between the Oligocene and the Miocene, olistostromal Eocene sequence south of the Ganos fault. Provisional field trip itenary for the 18th August: Leave Istanbul at 8.00 a.m. from the ITU campus, drive west towards Tekirdag, possibly stop at the marine terrace deposits in Marmara Ereglisi, gently folded Oligocene shales near Naip, cross-section across the steep limb of the Ganos monocline, recumbent kink folds and overturned bedding, picnic lunch on the Ganos mountain, normal faults on the coastal road south of the Ganos Mountain, Ganos fault zone at Gazikoy, marine terrace at Gazikoy, Miocene sequence south of the Ganos fault, angular unconformity between Oligocene and Miocene, olistostromal facies in the Eocene south of the Ganos fault in the Sarko region, Ganos fault at Golcuk, back to Istanbul.
INTERNATIONAL WORKSHOP ON COMPARATIVE STUDIES OF THE NORTH ANATOLIAN FAULT (NORTHWEST TURKEY) AND THE SAN ANDREAS FAULT (SOUTHERN CALIFORNIA)
12
Some recent relevant references: Armijo, R., Meyer, B., Hubert, A., and Barka, A., 1999, Westward propagation of the North Anatolian fault into the
northern Aegean: Timing and kinematics. Geology, 27, 267-270. Okay, A.I., Tüysüz, O. & Kaya, Ş., 2004, From transpression to transtension: Changes in morphology and structure
around a bend on the North Anatolian Fault in the Marmara region. Tectonophysics, 391, 259-282. Okay, A.I., Demirbağ, E., Kurt, H., Okay, N., Kuşçu, İ., 1999, An active, deep marine strike-slip basin along the
North Anatolian fault in Turkey. Tectonics, 18, 129-148. Seeber, L., Emre, O., Cormier, M., Sorlien, C., McHugh, C., Polonia, A., 2004. Uplift and subsidence from oblique
slip: the Ganos-Marmara bend of the North Anatolian Transform, western Turkey. Tectonophysics, 391, 239-258.
Yaltirak C., Sakinc, M., Aksu, A.E., Hiscott, R.N., Galleb, B., Ulgen, U.B., 2002, Late Pleistocene uplift history along the southwestern Marmara Sea determined from raised coastal deposits and global sea-level variations, Marine Geol., 190, 283-305.
Yaltirak C., Sakinc, M., Oktay, F.Y., 2000, Westward propagation of North Anatolian fault into the northern Aegean: Timing and kinematics: Comment, Geology, 28, 187-188.
Zattin, M., Okay, A.I., Cavazza, W., 2005. Fission-track evidence for late Oligocene and mid-Miocene activity along the North Anatolian Fault in south-western Thrace. Terra Nova, 17, 95-101.
Digital elevation model of the Ganos Mountain and the adjoining Tekirdağ Basin (Okay et al., 2004).
INTERNATIONAL WORKSHOP ON COMPARATIVE STUDIES OF THE NORTH ANATOLIAN FAULT (NORTHWEST TURKEY) AND THE SAN ANDREAS FAULT (SOUTHERN CALIFORNIA)
13
