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WNW
ESE
VOSGES
BLACK FOREST
RHINE GRABEN
SCHWAB. ALB.
0
0 km
5.9-6.0
5.4-5.5
4.0
6.0
6.0
6.0
5.5
10
10
5.4-5.5
6.2
6.3
6.4
20
20
6.4-7.5
7.0
8.2
30
8.0
30
8.0
8.0
40
40
8.4 -
8.5
8.2 -
8.3
?
50
50
8.5 -
8.6
?
60
60
70
70
ASTHENOSPHERE
80
80
0
100
200
300 km
WNW
ESE
VOSGES
RHINE GRABEN
BLACK FOREST
SCHWAB. ALB.
0
0 km
5.9-6.0
4.0
6.0
6.0
6.0
5.5
10
10
5.4-5.
5
5.4-5.5
6.3
6.2
6.4
20
20
6.4-7.5
7.0
8.0
8.2
8.0
30
30
8.0
?
?
40
40
8.4 -
8.5
8.2 -
8.3
50
50
8.5 -
8.6
60
60
70
70
?
?
80
80
ASTHENOSPHERE
0
100
200
300 km
Asthenosphere and
asthenospheric melts
Syn - Rift sediments
Continental crust
Pre - Rift sediments
Subcrustal lithosphere
Fig. 14.2 Central configuration of southern Rhine Graben, interpretations along tensional failure
(top) and mantle plume (bottom) models (modified after Edel et al. 1975; Prodehl 1989)
highly re
ective lower crust coincided with the base of a highly conductive low
velocity layer, which itself had low re
ectivity. He thought that this high con-
ductivity
low velocity zone was possibly related to the presence of
fluids, which
-
were released from the laminated lower crust.
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