Crustal modelling on a geo-seismic transect across Vøring Basin and Trøndelag Platform Domains where the sub crustal structures are modeled combining different data-set and deduced from the seismic interpretation of the crustal structures. The transect is a composite seismic line

1. Tu.
6706/6-1
NNW
Water depth: 1295m
11km proj.
HVITVEIS
Sa./Co.
Low
. Cam
.
SE
6707/10-1
T.V.D.S.S: -5000m
Water depth: 1274m
1.5km proj.
NYK
6607/5-2
UTGARD 2
6607/5-1
UTGARD 1
W.D.: 523m
1.2km proj.
T.V.D.S.S: -3414m T.V.D.S.S: -4640m T.V.D.S.S: -3780m
W.D.: 368m
3km proj.
6608/10-1
T.V.D.S.S: -3411m
W.D.: 375m
Cam6 m.f.s.
(Nise sst. 1)
(Nise sst. 2)
Top Blodøks
Eocene (+Oligocene)
Oligocene
Tertiary volcanic bodies
Sea level
HEL GRABEN NÅGRID SYNCLINE TRÆNA BASIN
NORDLAND RIDGE
HELGELAND BASIN
VEGA HIGH
NAGLFAR DOME
VØRINGESCARPMENT
VØRING MARGINAL
HIGH
VØRING BASIN
SUPPOSED CRUSTAL TRANSECT ACROSS VØRING BASIN-TRØNDELAG PLATFORM DOMAINS
60km NEward shift
Sketch not to scale
Vertical scale (t.w.t) is only representative
0.0
1.0
2.0
3.0
4.0
5.0
6.0
7.0
8.0
9.0
10
17
T.W.T
Mid oceanic ridge
Innermost
Boundary
Fault
Derived and highly modified by:
-”Structural elements of the Norvegian continental shelf”
NPD Bullettin n.8 (1995)
-Lister et al.(1991)
“Detachment models for the formation of
passive continental margins”
Tectonics vol.10, n.5
-Batlas: Mid Norway plate reconstruction atlas
with global and Atlantic perspectives
NGU (1998-2002)
-Land and sea areas of Northern Europe
Geological Map
NGU (2002)
-Comisso M. et al. (1991)
The role of fantasy and hazard in the geologist life
John Thrust & Sons Eds.
TRØNDELAG PLATFORM
Jura.
und.?
Ridgepush
Paleoproterozoic rocks metamorphosed and
accrted in the Svecokarelian orogeny (1900-1750 My)
Deep high grade metamorphic basement
Core complex of the Caledonian orogeny
Lower Allochthonous
(Fennoscandian Shield)
Authocthonous
Precambrian-Silurian rocks overthrusted and
metamorphosed in the Caledonian orogeny
Upper Allochthonous (Nappes)
Devonian
Trias und.
Jura und.
Low.K-Cen.
Devonian
Permian
Low.K-Cen.
Low. K.
Campanian und.
Alb.
Apt.
Cen.
Barr.
Haut.
Valeng.
Berr.
Pliocene
Maastrichtian
Recent
Cam.
Sa./Ca.
Tur.
Cen.
Cen.
Cen.
Cen.
B.C.U.
B.T.U.
Paleocene
Upp. K.
Pliocene
RIFTING AREA
Miocene
Recent
UPPER DECOLLEMENT
ASTENOSPHERE
OCEANIC CRUST
ASTENOSPHERE
bending
Astenosphere
upwelling
Area of lithospheric (continental/mantle)
thinning and astenosphere upwelling
LITHOSPHERIC MANTLE
MAIN SOLE
DECOLLEMENT
Lithospheric
Crustal anatexis byupwelling mantle melts
Eo-Oligocene
Oligo-Miocene
SDR
MOHO
ASTENOSPHERE