Morphostructure at the junction between the Beata ridge and the Greater Antilles island arc (offshore Hispaniola southern slope)
Oblique 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 sou...
| Autores: | , , , |
|---|---|
| Tipo de recurso: | artículo |
| Fecha de publicación: | 2014 |
| País: | España |
| Institución: | Universidad Complutense de Madrid (UCM) |
| Repositorio: | Docta Complutense |
| Idioma: | inglés |
| OAI Identifier: | oai:docta.ucm.es:20.500.14352/34608 |
| Acceso en línea: | https://hdl.handle.net/20.500.14352/34608 |
| Access Level: | acceso abierto |
| Palabra clave: | 551.4 Caribbean plate Hispaniola block Beata ridge Muertos thrust belt Island arc Collisional tectonics Geodinámica 2507 Geofísica |
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Morphostructure at the junction between the Beata ridge and the Greater Antilles island arc (offshore Hispaniola southern slope)Granja Bruña, José LuisCarbo Gorosabel, AndrésLlanes Estrada, María PilarMuñoz Martín, Alfonso551.4Caribbean plateHispaniola blockBeata ridgeMuertos thrust beltIsland arcCollisional tectonicsGeodinámica2507 GeofísicaOblique 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.Elsevier, B.V.Universidad Complutense de Madrid20142014-01-0120142014-01-01journal articlehttp://purl.org/coar/resource_type/c_6501info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/20.500.14352/34608reponame:Docta Complutenseinstname:Universidad Complutense de Madrid (UCM)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2Atribución-NoComercial-SinDerivadas 3.0 Españahttps://creativecommons.org/licenses/by-nc-nd/3.0/es/info:eu-repo/semantics/openAccessoai:docta.ucm.es:20.500.14352/346082026-06-02T12:44:21Z |
| dc.title.none.fl_str_mv |
Morphostructure at the junction between the Beata ridge and the Greater Antilles island arc (offshore Hispaniola southern slope) |
| title |
Morphostructure at the junction between the Beata ridge and the Greater Antilles island arc (offshore Hispaniola southern slope) |
| spellingShingle |
Morphostructure at the junction between the Beata ridge and the Greater Antilles island arc (offshore Hispaniola southern slope) Granja Bruña, José Luis 551.4 Caribbean plate Hispaniola block Beata ridge Muertos thrust belt Island arc Collisional tectonics Geodinámica 2507 Geofísica |
| title_short |
Morphostructure at the junction between the Beata ridge and the Greater Antilles island arc (offshore Hispaniola southern slope) |
| title_full |
Morphostructure at the junction between the Beata ridge and the Greater Antilles island arc (offshore Hispaniola southern slope) |
| title_fullStr |
Morphostructure at the junction between the Beata ridge and the Greater Antilles island arc (offshore Hispaniola southern slope) |
| title_full_unstemmed |
Morphostructure at the junction between the Beata ridge and the Greater Antilles island arc (offshore Hispaniola southern slope) |
| title_sort |
Morphostructure at the junction between the Beata ridge and the Greater Antilles island arc (offshore Hispaniola southern slope) |
| dc.creator.none.fl_str_mv |
Granja Bruña, José Luis Carbo Gorosabel, Andrés Llanes Estrada, María Pilar Muñoz Martín, Alfonso |
| author |
Granja Bruña, José Luis |
| author_facet |
Granja Bruña, José Luis Carbo Gorosabel, Andrés Llanes Estrada, María Pilar Muñoz Martín, Alfonso |
| author_role |
author |
| author2 |
Carbo Gorosabel, Andrés Llanes Estrada, María Pilar Muñoz Martín, Alfonso |
| author2_role |
author author author |
| dc.contributor.none.fl_str_mv |
Universidad Complutense de Madrid |
| dc.subject.none.fl_str_mv |
551.4 Caribbean plate Hispaniola block Beata ridge Muertos thrust belt Island arc Collisional tectonics Geodinámica 2507 Geofísica |
| topic |
551.4 Caribbean plate Hispaniola block Beata ridge Muertos thrust belt Island arc Collisional tectonics Geodinámica 2507 Geofísica |
| description |
Oblique 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. |
| publishDate |
2014 |
| dc.date.none.fl_str_mv |
2014 2014-01-01 2014 2014-01-01 |
| dc.type.none.fl_str_mv |
journal article http://purl.org/coar/resource_type/c_6501 |
| dc.type.openaire.fl_str_mv |
info:eu-repo/semantics/article |
| format |
article |
| dc.identifier.none.fl_str_mv |
https://hdl.handle.net/20.500.14352/34608 |
| url |
https://hdl.handle.net/20.500.14352/34608 |
| dc.language.none.fl_str_mv |
Inglés eng |
| language_invalid_str_mv |
Inglés |
| language |
eng |
| dc.rights.none.fl_str_mv |
open access http://purl.org/coar/access_right/c_abf2 Atribución-NoComercial-SinDerivadas 3.0 España https://creativecommons.org/licenses/by-nc-nd/3.0/es/ |
| dc.rights.openaire.fl_str_mv |
info:eu-repo/semantics/openAccess |
| rights_invalid_str_mv |
open access http://purl.org/coar/access_right/c_abf2 Atribución-NoComercial-SinDerivadas 3.0 España https://creativecommons.org/licenses/by-nc-nd/3.0/es/ |
| eu_rights_str_mv |
openAccess |
| dc.format.none.fl_str_mv |
application/pdf |
| dc.publisher.none.fl_str_mv |
Elsevier, B.V. |
| publisher.none.fl_str_mv |
Elsevier, B.V. |
| dc.source.none.fl_str_mv |
reponame:Docta Complutense instname:Universidad Complutense de Madrid (UCM) |
| instname_str |
Universidad Complutense de Madrid (UCM) |
| reponame_str |
Docta Complutense |
| collection |
Docta Complutense |
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|
| repository.mail.fl_str_mv |
|
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1869420130182627328 |
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15,301629 |