文章基本信息

标题：Expanding spread profile at the northern Jan Mayen Ridge
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作者：Bård Johansen ; Olav Eldholm ; Manik Talwani 等
期刊名称：Polar Research
印刷版ISSN：1751-8369
出版年度：1988
卷号：6
期号：1
页码：95-104
DOI：10.3402/polar.v6i1.6849
语种：English
出版社：Co-Action Publishing
摘要：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.