Active Tectonics, Quaternary Stress Regime Evolution and Seismotectonic Faults in Southern Central Hispaniola: Implications for the Quantitative Seismic Hazard Assessment
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Título: | Active Tectonics, Quaternary Stress Regime Evolution and Seismotectonic Faults in Southern Central Hispaniola: Implications for the Quantitative Seismic Hazard Assessment |
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Autor/es: | Escuder‐Viruete, Javier | Fernández, Francisco José | Pérez-Valera, Fernando | McDermott, Frank |
Grupo/s de investigación o GITE: | Cambios Paleoambientales |
Centro, Departamento o Servicio: | Universidad de Alicante. Departamento de Ciencias de la Tierra y del Medio Ambiente |
Palabras clave: | Active Tectonics | Quaternary Stress Regime Evolution | Seismotectonic Faults | Southern Central Hispaniola |
Fecha de publicación: | 22-feb-2024 |
Editor: | Wiley Periodicals |
Cita bibliográfica: | Geochemistry, Geophysics, Geosystems. 2024, 25(2): e2023GC011003. https://doi.org/10.1029/2023GC011003 |
Resumen: | Present-day convergence between Caribbean and North American plates is accommodated by subduction zones, major active thrusts and strike-slip faults, which are probably the source of the historical large earthquakes on Hispaniola. However, little is known of their geometric and kinematic characteristics, slip rates and seismic activity over time. This information is important to understand the active tectonics in Hispaniola, but it is also crucial to estimate the seismic hazard in the region. Here we show that a relatively constant NE-directed shortening controlled the geometry and kinematics of main active faults in southern central Hispaniola, as well as the evolution of the Quaternary stress regime. This evolution included a pre-Early Pleistocene D1 event of NE-trending compression, which gave rise to the large-scale fold and thrust structure in the Cordillera Central, Peralta Belt, Sierra Martín García and San Juan-Azua basin. This was followed by a near pure strike-slip D2 stress regime, partitioned into the N-S to NE-SW transverse Ocoa-Bonao-La Guácara and Beata Ridge fault zones, as well as subordinate structures in related sub-parallel deformation corridors. Shift to D2 strike-slip deformation was related to indentation of the Beata Ridge in southern Hispaniola from the Early to Middle Pleistocene and continues today. D2 was locally coeval by a more heterogeneous and geographically localized D3 extensional deformation. Defined seismotectonic fault zones divide the region into a set of simplified seismogenic zones as starting point for a seismic hazard modeling. Highest peak ground acceleration values computed in the Ocoa Bay establish a very high seismic hazard. |
Patrocinador/es: | The research was funded through PID2019-105625RB-C22 project of the MCIN/AEI/10.13039/501100011033 of the Spanish Government. Some works also received funding from the DR-T 1190 Project of the Banco Interamericano de Desarrollo (World Bank) and the FONDOCYT project 2015-1b3–118 of the MESCyT of the Dominican Republic Government. |
URI: | http://hdl.handle.net/10045/141207 |
ISSN: | 1525-2027 |
DOI: | 10.1029/2023GC011003 |
Idioma: | eng |
Tipo: | info:eu-repo/semantics/article |
Derechos: | © 2024 The Authors. Geochemistry, Geophysics, Geosystems published by Wiley Periodicals LLC on behalf of American Geophysical Union. This is an open access article under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made. |
Revisión científica: | si |
Versión del editor: | https://doi.org/10.1029/2023GC011003 |
Aparece en las colecciones: | INV - CP - Artículos de Revistas |
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Escuder‐Viruete_etal_2024_GeochemGeophysGeosyst.pdf | 13,09 MB | Adobe PDF | Abrir Vista previa | |
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