Pliocene-Quaternary tectonic activity in the Ocoa Bay (Hispaniola Island, NE Caribbean)
DOI:
https://doi.org/10.55407/geogaceta98192Keywords:
Caribbean plate, Dominican Republic, active tectonics, seismic faultsAbstract
The left-lateral Beata ridge (BR) and the right-lateral OcoaBonao-La Guacara (OB) fault zones transfer the Plio-Quaternary deformation that results from the NNE-indentation of the Beata oceanic escarpment under the southern margin of Hispaniola. An arcuate relief bound the Ocoa bay, and the current tectonic uplift accelerates the fluvial incision and modifies the fluvial network. Both are active seismic faults whose respective kilometric traces converge 20 km northeaster ward of Ocoa bay, under the San José de Ocoa basin and potentially might be generated large earthquakes. In detail, strain is accommodated by the brittle partition of the fault zones and segmentation of the main faults into minor faults that bounded kilometric blocks of a lozenge shape, with the development of two significant partitions: the Sabana Buey pull-apart basin and the extensional block southward the Azua area; according to the respective fault topology and the relative fault rate displacement. The avulsion of the Ocoa river by the Sabana Buey basin opening occurred during the late Pleistocene, according to the OSL age of a lower alluvial fan (ca. 16 ky) incised by the current floodplain into the river mouth.
References
Díez de Neira, J.A. y Solé Pont (2002). Acta Geológica Hispánica, v. 37, nº 2-3, 163-191.
Escuder-Viruete, J., Fernández, F.J., Pérez-Valera, F. y Medialdea, A. (2023). Tectonics. https://doi.org/10.1029/2022TC007618
Guerreri, L. y Vittori, E. Eds. (2007). Intensity Scale ESI-2007. Memorie Descriptive Della Carta Geologica D’Italia, 74. APAT, SystemCart Srl, Roma, Italia.
Heubeck, C. y Mann, P. (1991). En: Geologic and Tectonic Development of the North America-Caribbean Plate Boundary in Hispaniola. (Mann, P., Draper, G. y Lewis, J.F. Eds.). Cambrigde Geological Society of America Special Paper 262, 315–336.
Hernáiz-Huerta, P.P. y Pérez-Estaún, A. (2002). Acta Geológica Hispánica, v. 37, nº 2-3, 183-205.
Quigley, M. y Duffy, B. (2020). Geosciences, 10, 114. https://doi.org/10.3390/geosciences10030114
Ladd, J.W., Shih, Tai-Chang y Tsai, C.J. (1981). American Association of Petroleum Geologist Bulletin, 65, 466-489.
Mann, P., McLaughlin, P.P.Jr. y Cooper, J.C. (1991). En: Geologic and Tectonic Development of the North America-Caribbean Plate Boundary in Hispaniola. (Mann, P., Draper, G. y Lewis, J.F. Eds.). Cambrigde Geological Society of America Special Paper 262, 367-389.
Mann, P., Calais, E., Ruegg, J.C., Demets, C., Jansma, P.E. y Mattioli, G.S. (2002). Tectonics 21(6), 1-23. https://doi.org/10.1029/2001TC001304
Mercier de Lépinay, B., Mauffret, A., Jany, I., Bouysse, P., Mascle, A., Renard, V., Dtephan, J.F. y Hernandez, E. (1988). Comptes Rendus de l’Académie des Sciences. Paris, 307,1289-1296.
Pérez-Estaún, A. Hernaiz-Huerta, P.P., Lopera, E., Joubert, M., Escuder Viruete, J., Díaz de Neira, A., Monthel, J., García-Senz, J., Urien, P., Contreras, F., Bernárdez, E., Stein, G., Deschamps, I., García-Lobón, J.L. y Ayala, C. (2007). Boletín Geológico y Minero, 118, 157-174.
Pérez-Valera, F. (2010). Mapa Geológico de la Hoja a E. 1:50.000 nº 6070-I (Sabana Buey). Servicio Geológico Nacional, Santo Domingo, 96 pp. https://www.sgn.gob.do
Ryan, W.B.F., Carbotte, S.M., Coplan, J. O’Hara, S., Melkonian, A., Arko, R., Weissel, R.A., Ferrini, V., Goodwillie, A., Nitsche, F., Bonczkowski, J., y Zemsky, R. (2009). Geochemistry, Geophysics, Geosystems 10, Q03014. https://doi.org/10.1029/2008GC002332
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Copyright (c) 2023 Francisco José Fernández Rodríguez, Javier Escuder-Viruete, Fernando Pérez Valera, Pablo Valverde Vaquero, Mercedes Castillo Carrión, Álvaro Rubio Ordóñez, Alicia Medialdea
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