Show simple item record

dc.contributor.authorKandilarov, Aleksandreeng
dc.contributor.authorLanda, Hildegunneng
dc.contributor.authorMjelde, Rolfeng
dc.contributor.authorPedersen, Rolf Birgereng
dc.contributor.authorOkino, Kyokoeng
dc.contributor.authorMurai, Yoshioeng
dc.PublishedMarine Geophysical Researches 31: 173–195en_US
dc.description.abstractA combined ocean bottom seismometer, multichannel seismic reflection and gravity study has been carried out along the spreading direction of the Knipovich Ridge over a topographic high that defines a segment center. The youngest parts of the crust in the immediate vicinity of the ridge reveal fractured Oceanic Layer 2 and thermally expanded and possibly serpentinized Oceanic Layer 3. The mature part of the crust has normal thickness and seismic velocities with no significant crustal thickness and seismic velocity variations. Mature Oceanic Layer 2 is in addition broken into several rotated fault blocks. Comparison with a profile acquired *40 km north of the segment center reveals significant differences. Along this profile, reported earlier, periods of slower spreading led to generation of thin crust with a high P-wave velocity (Vp), composed of a mixture of gabbro and serpentinized mantle, while periods of faster spreading led to generation of more normal gabbroic crust. For the profile across the segment center no clear relation exists between spreading rate and crustal thickness and seismic velocity. In this study we have found that higher magmatism may lead to generation of oceanic crust with normal thickness even at ultra-slow spreading rates.en_US
dc.rightsAttribution-NonCommercial CC BY-NCeng
dc.subjectKnipovich Ridgeeng
dc.subjectUltra-slow spreadingeng
dc.subjectCrustal structureeng
dc.subjectRefraction seismicseng
dc.subjectOcean bottom seismometereng
dc.subjectMultichannel seismic reflectioneng
dc.titleCrustal structure of the ultra-slow spreading Knipovich Ridge, North Atlantic, along a presumed ridge segment centeren_US
dc.typePeer reviewed
dc.typeJournal article
dc.rights.holderThe Author(s)en_US
dc.rights.holderCopyright The Author(s) 2010. This article is published with open access at Springerlink.comen_US
dc.subject.nsiVDP::Mathematics and natural science: 400en_US

Files in this item


This item appears in the following Collection(s)

Show simple item record

Attribution-NonCommercial CC BY-NC
Except where otherwise noted, this item's license is described as Attribution-NonCommercial CC BY-NC