Images of debris fans and other deep-sea sediments on the sea bed of the Faroe–Shetland Channel based on 3D seismic data

Authors:

1 April 2005

journal article
Published by Geological Society of London in Scottish Journal of Geology

Vol. 41 (1) , 81-86
DOI:10.1144/sjg41010081

Abstract

Synopsis: The Faroe–Shetland Channel (FSC) is covered by 25 000 km ² of 3D seismic data which have been used to image the morphology of the sea bed. Among many of the observed geological features, the image reveals a system of down-slope linear gullies and associated debris fans on the floor of the FSC. These gullies and fans are interpreted as the products of high-energy mass flow. These features are not observed elsewhere in the FSC and are localized t o this part of the West Shetland Margin. Their restricted geographical extent and episodic longevity implies that there must have been a significant difference in the nature of the ice margin here, possibly caused by the outflow of an ancient ice stream that fed the gully and fan systems with semi-liquid sediments on this part of the West Shetland Shelf.

Keywords

This publication has 9 references indexed in Scilit:

Imaging the Afen Slide From Commercial 3D Seismic — Methodology and Comparisons With High-Resolution Data
2003
Late Neogene development of the UK Atlantic margin
Geological Society, London, Special Publications, 2002
Images of the seabed in the Faroe-Shetland Channel from commercial 3D seismic data
Marine Geophysical Research, 2001
Sedimentary processes shaping the eastern slope of the Faeroe–Shetland Channel
Continental Shelf Research, 2001
Tertiary compressional structures on the Faroe–Rockall Plateau in relation to northeast Atlantic ridge-push and Alpine foreland stresses
Tectonophysics, 1998
Neogene seismic facies and deep-water gateways in the Faeroe Bank area, NE Atlantic
Marine Geology, 1998
Use of the slant stack for geologic or geophysical map lineament analysis
Geophysics, 1997
Mass-wasting features on the continental slope of Northwest Europe
Marine Geology, 1987
How thin is a thin bed?
Geophysics, 1973