1. SOME CONSTRAINTS FOR SCENARIOS OF THE NORTHERN BARENTS SEA MARGIN EVOLUTION
Authors:
1. DATA 2. METHOD 3. CRUSTAL STRUCTURE 4. BREAK-UP SETTING
Alexander Minakov (Department of Earth Science, University of Bergen,
Alexander.Minakov@geo.uib.no);
Jan Inge Faleide (Department of Geosciences, University of Oslo); 3D GRAVITY INVERSION INCORPORATING LITHOSPHERE THERMAL GRAVITY ANOMALY S N
D
Kong Karls Land Svalbard Platform Western Nansen Basin AMERASIAN
BATHYMETRY
Vladimir Yu. Glebovsky, (VNIIOkeangeologia, Saint-Petersburg, Russia); Greenland STRETCHING FACTORS
0 100 200 300 400 500 600 700 800
BASIN
D
Amunsen Basin BOUGUER GRAVITY CRUSTAL AGE 0 ALPHA RIDGE
85
Rolf Mjelde (Department of Earth Science, University of Bergen) 85
D
85 ˚ LAPTEV
˚
GREENLAND
° 30 ˚
30 ° 5° 30 ˚ 85
˚ ˚ 0˚ 85 -5
° 90 8 ˚ 90 9 SEA
D
a14
a12
Gakkel Ridge 60˚ 60˚
a13
60° -10
ABSTRACT
a11
a10
a6
3.
-15
a5
5
Continental crust
a4
1
km
3.5
b
a3
10 2. 4.1 7
3. -20
3.3
0 5
Nansen Basin 80
60 1.7 2.9
awi2001
a2
40
80 80
The northern Barents Sea
Yermak Plateau
Yermak Plateau 80 20
˚ Oceanic crust
1.
° 0 ˚ -25
3
1.1
sin
0˚
a1
-20 °
Vo
Vo Severnaya 80 ˚ 8
80
Ba
rro
on Zemlya -30
continental margin has remained COT
nii
n n
ttrr Pre-Cenozoic sediments C24 (53 Ma)
d
ou
ou -40
lan
gh
gh -35
St.
c
St
Franz -
F -n
the least investigated province of
en
1.1
An
An
-60
-80
Cenozoic sediments
re
na
Franz Josef Land Franz Josef Land Western Nansen Basin
g
Svalbard
at
Victor i
Vi r
-G
tro
30 30 30 ˚
the Barents Sea because of very
ou
° ˚ ˚ ˚ 90
ian
90
ug
Canada ° 90 0 100 200 300 400 500 600 700 800
1.1
ia tro
hh
Basin
eg
f
tr u g
D
rw
0 AMERASIAN
limited seismic data due to a
e
dg
gh
Labrador Sea 1
Ri
No
60˚
h
Amerasian
v
lee
4 60° 60˚ BASIN
Ele slan
D
de
Basin 5
sm d
I
-5
en
ere
M
Na
Alpha Ridge
2 mGal mln. yr. ALPHA RIDGE
re
s S
largely permanent ice cover. An
trai
Makarov Basin
3
