en
Scientific article
Open access
English

High-resolution seismic stratigraphy of an Holocene lacustrine delta in western Lake Geneva (Switzerland)

Published inEclogae geologicae Helveticae, vol. 96, no. Supplement 1, p. 11-20
Publication date2003
Abstract

A high-resolution seismic survey was conducted in western Lake Geneva on a small delta formed by the Promenthouse, the Asse and the Boiron rivers. This dataset provides information on changes in the geometry and sedimentation patterns of this delta from Late-glacial to Present. The geometry of the deposits of the lacustrine delta has been mapped using 300-m spaced grid lines acquired with a 12 kHz Echosounder subbottom profiler. A complete three dimensional image of the sediment architecture was reconstructed through seismic stratigraphic analysis. Six different delta lobes have been recognized in the prodelta area. Depositional centers and lateral extension of the delta have changed through time, indicating migration and fluctuation of river input as well as changes in lake currents and wind regime from the time of glacier retreat to the Present. The delta slope is characterized by a high instability causing slumps developing and by the accumulation of biogenic gas that prevents seismic penetration.

Keywords
  • lacustrine delta
  • western Lake Geneva
  • Holocene
  • seismic stratigraphy
  • slope instability
  • gas blanking
  • 3-D model
Citation (ISO format)
BASTER, Ira et al. High-resolution seismic stratigraphy of an Holocene lacustrine delta in western Lake Geneva (Switzerland). In: Eclogae geologicae Helveticae, 2003, vol. 96, p. 11–20. doi: 10.1007/978-3-0348-7992-7_3
Main files (1)
Article (Published version)
accessLevelPublic
Identifiers
ISSN of the journal0012-9402
596views
178downloads

Technical informations

Creation03/19/2012 4:07:00 PM
First validation03/19/2012 4:07:00 PM
Update time03/14/2023 5:09:51 PM
Status update03/14/2023 5:09:51 PM
Last indexation01/15/2024 11:06:47 PM
All rights reserved by Archive ouverte UNIGE and the University of GenevaunigeBlack