Geological control of shallow gas and pockmarks in the Norwegian Channel; high resolution shallow subbottom profiling of small scale features |
| |
Authors: | M. D. Max R. Schreiber N. Z. Cherkis |
| |
Affiliation: | (1) Naval Research Laboratory, Washington, D.C., USA;(2) Atlas Elektronik GmbH, Bremen, Germany;(3) Present address: Saclantcen Underwater Research Centre, Viale San Bartolomeo 400, I-19026, SD, Italy |
| |
Abstract: | High resolution bathymetric and fine-scale parametric subbottom profiling along a line to the SW of Stavanger, Norway near the NE flank of the Norwegian Channel, show pockmarks clustered over neotectonic shallow fold structures in Quaternary sediments. Detailed profiles of the pockmarks indicate that they are collapsed gas seeps, rather than being collapse structures that followed doming and breaching with a more dramatic gas burst. The gentle folding and weak structures along the margin of a Mesozoic through Cenozoic sedimentary basin are probably due to differential uplift generating light compressional strain. |
| |
Keywords: | neotectonics sub-bottom profiling parametric sonar gas pockmarks |
本文献已被 SpringerLink 等数据库收录! |
|