Insights on Formation of the Gulf of Mexico by Rayleigh Surface Wave Imaging

Simple item page
dc.citation.articleNumbere2022GC010566en_US
dc.citation.issueNumber12en_US
dc.citation.journalTitleGeochemistry, Geophysics, Geosystemsen_US
dc.citation.volumeNumber23en_US
dc.contributor.authorNguyen, Luan C.en_US
dc.contributor.authorLevander, Alanen_US
dc.contributor.authorNiu, Fenglinen_US
dc.contributor.authorMorgan, Juliaen_US
dc.contributor.authorLi, Guoliangen_US
dc.date.accessioned2023-01-27T14:47:13Zen_US
dc.date.available2023-01-27T14:47:13Zen_US
dc.date.issued2022en_US
dc.description.abstractWe used cross-correlation of ambient noise records from seismic stations in the US, Mexico, and Cuba to extract dispersion data of Rayleigh surface wave. Our derived 3D shear-wave velocity model of the greater Gulf of Mexico (GOM) region captures variations in the crustal and lithospheric structures across the continental margins of the US Gulf Coast and Yucatan, Mexico. The model shows a zone of reduced velocity in the mantle lithosphere underlying the extended continental margin of the northwestern GOM. We attributed this velocity reduction to extensional deformation and melt-induced weakening of the lithosphere during the Triassic continental rifting that preceded the seafloor spreading that formed the GOM. Melt extraction might have been hindered by the greater lithospheric thickness in the western region along the US Gulf Coast margin that resulted in the westward decrease of rift-related volcanism/magmatism reported from previous studies. The clear asymmetry between the US Gulf Coast and its conjugate Yucatan margin suggests extension along a shear-zone that focused more deformation on the North American plate prior to breakup. In contrast to the counterclockwise rotation of the Yucatan block during seafloor-spreading, our analyses using deformable plate models demonstrate that continental rifting occurred in a predominantly northwest-southeast direction. This change in plate motion is attributed to the development of mantle shear-zones in the western part of the rift. We estimated the depth of the lithosphere-asthenosphere boundary and determined that the extended continental and oceanic lithospheres have mostly regained their thickness since the time of breakup.en_US
dc.identifier.citationNguyen, Luan C., Levander, Alan, Niu, Fenglin, et al.. "Insights on Formation of the Gulf of Mexico by Rayleigh Surface Wave Imaging." <i>Geochemistry, Geophysics, Geosystems,</i> 23, no. 12 (2022) Wiley: https://doi.org/10.1029/2022GC010566.en_US
dc.identifier.digital2022-Nguyenen_US
dc.identifier.doihttps://doi.org/10.1029/2022GC010566en_US
dc.identifier.urihttps://hdl.handle.net/1911/114254en_US
dc.language.isoengen_US
dc.publisherWileyen_US
dc.rightsThis is an open access article under the terms of the Creative Commons Attribution-NonCommercial License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes.en_US
dc.rights.urihttps://creativecommons.org/licenses/by-nc/4.0/en_US
dc.titleInsights on Formation of the Gulf of Mexico by Rayleigh Surface Wave Imagingen_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpublisher versionen_US
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
2022-Nguyen.pdf
Size:
7.88 MB
Format:
Adobe Portable Document Format
Download
Collections
Faculty Publications
Earth, Environmental and Planetary Sciences Publications