Expanding spread profile at the northern Jan Mayen Ridge

An expanding spread seismic profile at the central northern Jan Mayen Ridge, ESP-5, has yielded a crustal seismic velocity distribution which is similar to observations from the thinned continental crust at the Norwegian continental margin. The profile reveals a post-early Eocene sedimentary sequenc...

Full description

Bibliographic Details
Published in:Polar Research
Main Authors: Johansen, Bård, Eldholm, Olav, Talwani, Manik, Stoffa, Paul L., Buhl, Peter
Format: Article in Journal/Newspaper
Language:English
Published: Norwegian Polar Institute 1988
Subjects:
Jan Mayen
Jan Mayen Ridge
Polar Research
Online Access:https://polarresearch.net/index.php/polar/article/view/2421
https://doi.org/10.3402/polar.v6i1.6849
Description
Summary:An expanding spread seismic profile at the central northern Jan Mayen Ridge, ESP-5, has yielded a crustal seismic velocity distribution which is similar to observations from the thinned continental crust at the Norwegian continental margin. The profile reveals a post-early Eocene sedimentary sequence, about 1. 5 km thick, overlying 1 km of volcanic extrusives and interbedded sediments. Below, there are about 3 km of pre-opening sediments above the seismic basement. The results indicate that the main ridge block is underlain by a thinned crust, possibly only 13.5 km thick. The results are compatible with a continental nature for the main ridge complex.

Similar Items