Morphostructure at the junction between the Beata ridge and the Greater Antilles island arc (offshore Hispaniola southern slope)

Simple item page
dc.contributor.authorGranja Bruña, José Luis
dc.contributor.authorCarbo Gorosabel, Andrés
dc.contributor.authorLlanes Estrada, María Pilar
dc.contributor.authorMuñoz Martín, Alfonso
dc.date.accessioned2023-06-19T13:54:54Z
dc.date.available2023-06-19T13:54:54Z
dc.date.issued2014
dc.description.abstractOblique convergence between the Caribbean plate's interior and the inactive Greater Antilles island arc has resultedin the collision and impingement of the thickened crust of theBeata ridge into southern Hispaniola Island. Deformation resulting from this convergence changes from a low-angle southward-verging thrust south of easternHispaniola, to collision and uplift in south-central Hispaniola, and to left-lateral transpression along theSouthern peninsula of Haiti in western Hispaniola. Using new swath bathymetry and a dense seismic reflectiongrid, we mapped the morphological, structural and sedimentological Elements of offshore southern Hispaniola.We have identified four morphotectonic provinces: the Dominican sub-basin, the Muertos margin, the Beataridge and the Haiti sub-basin. The lower slope of the Muertos margin is occupied by the active Muertos thrustbelt, which includes several active out-of-sequence thrust faults that, were they to rupture along their entirelength, could generate large-magnitude earthquakes. The interaction of the thrust beltwith the Beata ridge yieldsa huge recess and the imbricate system disappears. The upper slope of the Muertos margin shows hick slopedepositswhere the extensional tectonics and slumping processes predominate. The northern Beata ridge consistsof an asymmetrically uplifted and faulted block of oceanic crust. Our results suggest that the shallower structureand morphology of the northern Beata ridge can be mainly explained by a mechanism of extensional unloadingfrom the Upper Cretaceous onward that is still active residually along the summit of the ridge. The tectonicmodels for the northern Beata ridge involving active reverse strike–slip faults and transpression caused by theoblique convergence between the Beata ridge and the island arc are not supported by the structural interpretation.The eastern Bahoruco slope an old normal fault that acts as a passive tear fault accommodating the sharpalong-strike transition from low-angle thrusting to collision and uplifting.
dc.description.departmentDepto. de Geodinámica, Estratigrafía y Paleontología
dc.description.facultyFac. de Ciencias Geológicas
dc.description.refereedTRUE
dc.description.sponsorshipGeological Survey Coastal and Marine Geology Program
dc.description.sponsorshipDirección General de Minería of the Dominican Republic
dc.description.statuspub
dc.eprint.idhttps://eprints.ucm.es/id/eprint/78563
dc.identifier.issn0040-1951
dc.identifier.officialurlhttp://dx.doi.org/10.1016/j.tecto.2014.02.001
dc.identifier.urihttps://hdl.handle.net/20.500.14352/34608
dc.journal.titleTectonophysics
dc.language.isoeng
dc.page.final163
dc.page.initial138
dc.publisherElsevier, B.V.
dc.relation.projectIDCTM2006-13666
dc.relation.projectIDCGL2010-17715
dc.rightsAtribución-NoComercial-SinDerivadas 3.0 España
dc.rights.accessRightsopen access
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.subject.cdu551.4
dc.subject.keywordCaribbean plate
dc.subject.keywordHispaniola block
dc.subject.keywordBeata ridge
dc.subject.keywordMuertos thrust belt
dc.subject.keywordIsland arc
dc.subject.keywordCollisional tectonics
dc.subject.ucmGeodinámica
dc.subject.unesco2507 Geofísica
dc.titleMorphostructure at the junction between the Beata ridge and the Greater Antilles island arc (offshore Hispaniola southern slope)
dc.typejournal article
dc.volume.number618
dspace.entity.typePublication
relation.isAuthorOfPublication3e70d521-0ccb-4af3-8e4c-5c243c232d24
relation.isAuthorOfPublication0b951829-65a7-4e09-ba68-d53c60e74bfb
relation.isAuthorOfPublication63f0523e-8097-40e9-b43c-63ed0ca786d9
relation.isAuthorOfPublication70f369a3-b3cd-43cb-874e-a7888da25de1
relation.isAuthorOfPublication.latestForDiscovery3e70d521-0ccb-4af3-8e4c-5c243c232d24
Download
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
Granja et al_2014_Beata-1.pdf
Size:
10.35 MB
Format:
Adobe Portable Document Format
downoload Download
Collections
Artículos