dc.contributor.author | Stubseid, Håvard Hallås | |
dc.contributor.author | Bjerga, Anders | |
dc.contributor.author | Haflidason, Haflidi | |
dc.contributor.author | Pedersen, Leif-Erik Rydland | |
dc.contributor.author | Pedersen, Rolf B. | |
dc.date.accessioned | 2023-08-15T08:54:39Z | |
dc.date.available | 2023-08-15T08:54:39Z | |
dc.date.created | 2023-07-15T13:48:21Z | |
dc.date.issued | 2023 | |
dc.identifier.issn | 2041-1723 | |
dc.identifier.uri | https://hdl.handle.net/11250/3084042 | |
dc.description.abstract | Nearly 30% of ocean crust forms at mid-ocean ridges where the spreading rate is less than 20 mm per year. According to the seafloor spreading paradigm, oceanic crust forms along a narrow axial zone and is transported away from the rift valley. However, because quantitative age data of volcanic eruptions are lacking, constructing geological models for the evolution of ultraslow-spreading crust remains a challenge. In this contribution, we use sediment thicknesses acquired from ~4000 km of sub-bottom profiler data combined with 14C ages from sediment cores to determine the age of the ocean floor of the oblique ultraslow-spreading Mohns Ridge to reveal a systematic pattern of young volcanism outside axial volcanic ridges. Here, we present an age map of the upper lava flows within the rift valley of a mid-ocean ridge and find that nearly half of the rift valley floor has been rejuvenated by volcanic activity during the last 25 Kyr. | en_US |
dc.language.iso | eng | en_US |
dc.publisher | Nature | en_US |
dc.rights | Navngivelse 4.0 Internasjonal | * |
dc.rights.uri | http://creativecommons.org/licenses/by/4.0/deed.no | * |
dc.title | Volcanic evolution of an ultraslow-spreading ridge | en_US |
dc.type | Journal article | en_US |
dc.type | Peer reviewed | en_US |
dc.description.version | publishedVersion | en_US |
dc.rights.holder | Copyright 2023 The Author(s) | en_US |
dc.source.articlenumber | 4134 | en_US |
cristin.ispublished | true | |
cristin.fulltext | original | |
cristin.qualitycode | 2 | |
dc.identifier.doi | 10.1038/s41467-023-39925-0 | |
dc.identifier.cristin | 2162397 | |
dc.source.journal | Nature Communications | en_US |
dc.identifier.citation | Nature Communications. 2023, 14 (1), 4134. | en_US |
dc.source.volume | 14 | en_US |
dc.source.issue | 1 | en_US |