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dc.contributor.authorSmith, Deborah K.  Concept link
dc.contributor.authorSchouten, Hans A.  Concept link
dc.date.accessioned2018-06-29T16:02:08Z
dc.date.available2018-10-24T08:22:13Z
dc.date.issued2018-05-08
dc.identifier.citationGeophysical Research Letters 45 (2018): 3942-3950en_US
dc.identifier.urihttps://hdl.handle.net/1912/10432
dc.descriptionAuthor Posting. © American Geophysical Union, 2018. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Geophysical Research Letters 45 (2018): 3942-3950, doi:10.1029/2018GL077555.en_US
dc.description.abstractAt the Galapagos triple junction, the westward propagating Cocos‐Nazca (C‐N) Rift breaks into ~0.5 Ma crust accreted at the East Pacific Rise. Rifting transitions to full magmatic seafloor spreading in the wake of the propagating tip. The 25‐km‐long Hess Deep rift is the transitional segment from rifting to spreading. Intrarift ridge (IRR), located within Hess Deep rift, is interpreted as a detachment fault, which exhumes deep‐seated rocks to the seafloor. Although transitional segments must have occurred throughout the westward propagation of C‐N Rift, IRR is the only obvious detachment fault along the base of the Rift scarps in the last ~5 Ma of its propagation. IRR formation may be in response to a decrease in spreading rate (~40 to <20 mm/yr) and presumed lower melt supply, resulting from the formation of the Galapagos microplate ~1.4 Ma, which now controls the opening at the C‐N Rift tip.en_US
dc.description.sponsorshipD.K.S. and H.S were supported in part by WHOI.en_US
dc.language.isoen_USen_US
dc.publisherJohn Wiley & Sonsen_US
dc.relation.urihttps://doi.org/10.1029/2018GL077555
dc.subjectSeafloor spreadingen_US
dc.subjectMid‐ocean ridgesen_US
dc.subjectOceanic triple junctionsen_US
dc.subjectOceanic detachment faultsen_US
dc.subjectGalapagos Triple Junctionen_US
dc.subjectGalapagos microplateen_US
dc.titleOpening of Hess Deep rift at the Galapagos triple junctionen_US
dc.typeArticleen_US
dc.description.embargo2018-10-24en_US
dc.identifier.doi10.1029/2018GL077555


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