Imaging molasse and quaternary sediments in Lake Geneva, Switzerland, with 3-D high-resolution seismic reflection methods: A case study

Détails

ID Serval
serval:BIB_21BC45C42E34
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Institution
Titre
Imaging molasse and quaternary sediments in Lake Geneva, Switzerland, with 3-D high-resolution seismic reflection methods: A case study
Périodique
Eclogae Geologicae Helvetiae
Auteur(s)
Beres M., Scheidhauer M., Marillier F.
ISSN-L
0012-9402
Statut éditorial
Publié
Date de publication
2003
Peer-reviewed
Oui
Volume
96
Pages
31-38
Langue
anglais
Notes
Beres2003b
Résumé
A high-resolution three-dimensional (3-D) seismic reflection survey
was conducted in Lake Geneva, near the city of Lausanne, Switzerland,
as part of a project for developing such seismic techniques. Using
a single 48-channel streamer, the 3-D site with an area of 1200 m
x 600 m was surveyed in 10 days. A variety of complex geologic structures
(e.g. thrusts, folds, channel-fill) up to similar to150 m below the
water bottom were obtained with a 15 in.(3) water gun. The 3-D data
allowed the construction of an accurate velocity model and the distinction
of five major seismic facies within the Lower Freshwater Molasse
(Aquitanian) and the Quaternary sedimentary units. Additionally,
the Plateau Molasse (PM) and Subalpine Molasse (SM) erosional surface,
"La Paudeze" thrust fault (PM-SM boundary) and the thickness of Quaternary
sediments were accurately delineated in 3-D.
Mots-clé
high resolution, 3-D seismic reflection, seismic facies, lake, Molasse, , thrust fault, Quaternary
Création de la notice
25/11/2013 18:31
Dernière modification de la notice
20/08/2019 13:58
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