An interpretation of the deep seismic lines from the Penninic Alps of Valais (Switzerland)

Details

Serval ID
serval:BIB_044843FF311E
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
An interpretation of the deep seismic lines from the Penninic Alps of Valais (Switzerland)
Journal
Bulletin de la Société Géologique de France
Author(s)
Marchant R.H., Steck A., Escher A., Levato L., Masson H., Olivier R., Stampfli G.M., Wagner J.J.
ISSN-L
0037-9409
Publication state
Published
Issued date
1993
Peer-reviewed
Oui
Volume
164
Pages
395-414
Language
english
Abstract
The upper part of three deep seismic lines running across the Penninic
Swiss Alps of Valais have been studied. Numerous reflectors illustrate
the nappe structure of this internal part of the orogen. These
reflectors, even at great depths (20-25 km), can be correlated with
outcropping geological features and are most likely produced by
lithological boundaries rather than by mylonites zones, which are hardly
reflective in such an environment. Our interpretations, largely
constrained by projections of the outcropping geology, have improved our
knowledge of the deep structure of this segment of the Alpine belt,
enhancing the importance of the backfolding and the crustal scale
deformation phase which produced the Rawil-Valpelline depression and the
Aar-Toce culmination. Furthermore we have here the possibility of
correlating seismic patterns produced by ductile folds with the
outcropping structures.
Create date
20/10/2012 18:11
Last modification date
20/08/2019 12:26
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