The extended continental crust West of Islas Marías (Mexico)

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dc.contributor.authorNúñez Escribano, Diana
dc.contributor.authorAcosta Hernández, Jorge A.
dc.contributor.authorEscalona Alcáraz, Felipe de Jesús
dc.contributor.authorPilia, Simone
dc.contributor.authorNúñez Cornú, Francisco Javier
dc.contributor.authorCórdoba Barba, Diego
dc.date.accessioned2023-06-16T14:17:05Z
dc.date.available2023-06-16T14:17:05Z
dc.date.copyright© 2021 The Author(s). The authors gratefully acknowledge Wendy McCausland for her valuable comments and observations, including the English grammar revision that help to improve this article and Juan Luis Carrillo-de la Cruz for his help with bathymetric and 1-D velocity-depth profiles figures. The authors also truly appreciate the colaboration during the TsuJal project of NOC Cruise JC098, RRS James Cook (United Kingdom); COIP/COPO/UNAM J-GAP2013 Cruise (BO El Puma); Unidad de Tecnología Marina (Spain); Secretaría de Marina (Mexico) ARM Holzinger; Secretaría de Defensa Nacional (Mexico); Unidad Municipal de Protección Civil y Bomberos (Jalisco State, Mexico); Unidad Municipal de Protección Civil y Bomberos (Puerto Vallarta, Mexico); Unidad Estatal de Protección Civil y Bomberos (Nayarit State, Mexico); Reserva de la Biosfera (Islas Marías) CONANP-SEMARNAT; Secretaría de Relaciones Exteriores (Mexico); and Órgano Desconcentrado de Prevención y Readaptación Social de la SEGOP. Some figures were generated using the Generic Mapping Tools (GMT-6; Wessel et al., 2019). SP acknowledges support from the European Union’s Horizon 2020 research and innovation programme under Marie Skłodowska-Curie Grant Agreement 790203. This research was mainly funded by Consejo Nacional de Ciencia y Tecnología (CONACYT) –FOMIXJal (2012-08-189963) (Mexico), CGL (2011-29474-C02-01) (TsuJal Project) and RTI 2018-094827-B-C21 (KUK AHPAN Project) DGI Plan Nacional I + D + i (Spain); RESAJ network was funded by CONACYT–FOMIXJAL 2008–96538 (2009) (Mexico). JA-H was financially supported by a master fellowship from CONACyT with code 401435 and CVU 660422.
dc.date.issued2021-09-23
dc.description.abstractThe crustal structure around the Islas Marías Archipelago has been debated for a long time. An important unresolved question is where the Rivera-North American plate subduction ends and the Tamayo fracture zone begins, from SE to NW. Results from the TsuJal project have shed light on the northwesternmost part of the Jalisco block structure. It is now clear that Sierra de Cleofas and the Islas Marías Escarpment comprise the northwestern continuation of the Middle America trench. However, other questions remain. In this paper, we present the structure of the shallow and deep crust and the upper mantle of the Islas Marías western region through the integration of multichannel seismic reflection, wide-angle seismic bathymetric and seismicity data, including records of an amphibious seismic network, OBS, and portable seismic stations, purposely deployed for this project, providing an onshore-offshore transect of 310 km length. Our findings disclose new evidence of the complex structure of the Rivera plate that dips 8°–9° underneath the NW Jalisco block as revealed by two seismic profiles parallel to the Islas Marías Escarpment. Moreover, we find five sedimentary basins and active normal faults at the edges of tectonic structures of the E-W oriented West Ranges and the N-S trending Sierra de Cleofas. Furthermore, the Sierra de Cleofas is the beginning of the active subduction of the Rivera plate beneath North America. The oceanic crust thickens and submerges towards the south while is coupled with the continental crust, from 6 km at the northern ends of the seismic profiles to 15 km in the contact region and 24 km at the coast and southern ends of them. The continental Moho was not fully characterized because of the geometry of the seismic transects, but a low-velocity layer associated with Rivera Plate subduction was observed beneath the Jalisco Block. Our results constrain the complexity of the area and reveal new structural features from the oceanic to continental crust and will be pivotal to assess geohazards in this area.en
dc.description.departmentDepto. de Física de la Tierra y Astrofísica
dc.description.facultyFac. de Ciencias Físicas
dc.description.refereedTRUE
dc.description.sponsorshipConsejo Nacional de Ciencia y Tecnologia (España)
dc.description.statuspub
dc.eprint.idhttps://eprints.ucm.es/id/eprint/68672
dc.identifier.citationNúñez, Diana, Acosta Hernández, J. A., Escalona Alcáraz, F. J. al. «The Extended Continental Crust West of Islas Marías (Mexico)». Frontiers in Earth Science, vol. 9, septiembre de 2021. Frontiers, https://doi.org/10.3389/feart.2021.666272.
dc.identifier.doi10.3389/feart.2021.666272
dc.identifier.issn2296-6463
dc.identifier.officialurlhttp://dx.doi.org/10.3389/feart.2021.666272
dc.identifier.relatedurlhttps://www.frontiersin.org/articles/10.3389/feart.2021.666272/full
dc.identifier.urihttps://hdl.handle.net/20.500.14352/4518
dc.issue.number666272
dc.journal.titleFrontiers in Earth Science
dc.language.isoeng
dc.page.total16
dc.publisherFrontiers Media
dc.relation.projectID2012-08-189963
dc.relation.projectID2008-96538
dc.relation.projectID2011-29474-C02-01
dc.relation.projectIDRTI 2018-094827-B-C21
dc.relation.projectID401435
dc.relation.projectIDCVU 660422
dc.rightsAttribution 4.0 Internationalen
dc.rights.accessRightsopen access
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subject.cdu550.3
dc.subject.keywordGulf-of-California
dc.subject.keywordNorth-American plates
dc.subject.keywordJalisco block
dc.subject.keywordRiveraplate
dc.subject.keywordRift
dc.subject.keywordEarthquake
dc.subject.keywordSeismicity
dc.subject.keywordExtension
dc.subject.keywordPacific
dc.subject.keywordBasins
dc.subject.keywordIslas Marías archipelago
dc.subject.keywordCrustal structure
dc.subject.keywordBasins
dc.subject.keywordAmphibious seismic network
dc.subject.ucmGeofísica
dc.subject.unesco2507 Geofísica
dc.subject.unesco2507.05 Sismología y Prospección Sísmica
dc.titleThe extended continental crust West of Islas Marías (Mexico)en
dc.typejournal article
dc.volume.number9
dspace.entity.typePublication
relation.isAuthorOfPublication358a1128-ccfa-47b6-b29f-f17ef7a90316
relation.isAuthorOfPublicationcffa2cd2-cf96-4078-af3e-932de4f9f857
relation.isAuthorOfPublication.latestForDiscoverycffa2cd2-cf96-4078-af3e-932de4f9f857
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