Neotectonic control of mud diapirism in the Cartagena region, Colombia
Major structures of the Sinu and San Jacinto Deformation Belts (SSJDB)characterize the area and are represented by anticline and synclinal folds, NE-SW high angle thrust-faults, NW-SE left-lateral strike-slip faults and E-Wright-lateral strike-slip faults. Locally, there are diapiric features like m...
| Main Authors: | , , |
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| Format: | Online |
| Language: | spa |
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Universidad Pedagógica y Tecnológica de Colombia - UPTC
2009
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| Subjects: | |
| Online Access: | https://revistas.uptc.edu.co/index.php/ingenieria_sogamoso/article/view/894 |
| _version_ | 1801706678488399872 |
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| author | Aristizábal, Camilo Ferrari, André Silva, Cléverson |
| author_facet | Aristizábal, Camilo Ferrari, André Silva, Cléverson |
| author_sort | Aristizábal, Camilo |
| collection | OJS |
| description | Major structures of the Sinu and San Jacinto Deformation Belts (SSJDB)characterize the area and are represented by anticline and synclinal folds, NE-SW high angle thrust-faults, NW-SE left-lateral strike-slip faults and E-Wright-lateral strike-slip faults. Locally, there are diapiric features like mud volcanoes, sometimes associated to gas/oil seeps, previously attributed to fold structures orthogonal to regional compression based on geophysical data. In this case study, we identified a close relationship between diapiric features and morphostructural lineaments on the land area as well as on the continental shelf, mainly denoted by E-W and WNW-ESE direction structures. Seismic information also allowed the identification of a relationship between the lower mud level underlying the tertiary sedimentary sequence and pliocene-pleistocene diapiric features. The inversion stress analysis indicates that the E-W / NW-SE structures are related to a WNW-ESE regional compressional stress, so implying that the E-W structures are right-lateral strike-slip faults and the NW-SE structures are reactivated left-lateral strike-slip faults. In both cases, a normal component was detected and that suggests a transtractive character to these structures. The presence of mud volcanoes indicates that the lower mud levels submitted to overpressurization help to generate or/and reactivate secondary fractures and faults associated to the NW compression related to the E-Wdextral transcurrent binary. The E-W and WNW-ESE dextral transcurrent faults and the NW-SE sinistral transcurrent faults, which control the mud diapirism, act as fluid-conducting surfaces - or leaky faults - that must be taken into account on the studies aiming the characterization of hydrocarbon migration processes in the SSJDB. |
| format | Online |
| id | oai:oai.revistas.uptc.edu.co:article-894 |
| institution | Revista Ingeniería, Investigación y Desarrollo |
| language | spa |
| publishDate | 2009 |
| publisher | Universidad Pedagógica y Tecnológica de Colombia - UPTC |
| record_format | ojs |
| spelling | oai:oai.revistas.uptc.edu.co:article-8942017-09-07T23:28:38Z Neotectonic control of mud diapirism in the Cartagena region, Colombia Control neotectónico del diapirismo de lodo en la región de Cartagena, Colombia Aristizábal, Camilo Ferrari, André Silva, Cléverson continental edge neotectonics Sinu belt mud diapirism thin-skin tectonics margen continental neotectónica Cinturón Sinú diapirismo de lodo tectónica de membrana Major structures of the Sinu and San Jacinto Deformation Belts (SSJDB)characterize the area and are represented by anticline and synclinal folds, NE-SW high angle thrust-faults, NW-SE left-lateral strike-slip faults and E-Wright-lateral strike-slip faults. Locally, there are diapiric features like mud volcanoes, sometimes associated to gas/oil seeps, previously attributed to fold structures orthogonal to regional compression based on geophysical data. In this case study, we identified a close relationship between diapiric features and morphostructural lineaments on the land area as well as on the continental shelf, mainly denoted by E-W and WNW-ESE direction structures. Seismic information also allowed the identification of a relationship between the lower mud level underlying the tertiary sedimentary sequence and pliocene-pleistocene diapiric features. The inversion stress analysis indicates that the E-W / NW-SE structures are related to a WNW-ESE regional compressional stress, so implying that the E-W structures are right-lateral strike-slip faults and the NW-SE structures are reactivated left-lateral strike-slip faults. In both cases, a normal component was detected and that suggests a transtractive character to these structures. The presence of mud volcanoes indicates that the lower mud levels submitted to overpressurization help to generate or/and reactivate secondary fractures and faults associated to the NW compression related to the E-Wdextral transcurrent binary. The E-W and WNW-ESE dextral transcurrent faults and the NW-SE sinistral transcurrent faults, which control the mud diapirism, act as fluid-conducting surfaces - or leaky faults - that must be taken into account on the studies aiming the characterization of hydrocarbon migration processes in the SSJDB. La región se caracteriza por la presencia de estructuras anticlinales, sinclinales, fallas inversas de alto ángulo de dirección NE-SW, fallas rumbo-destrales de orientación aproximada E-W y fallas transcurrentes de carácter sinistral de dirección NW-SE. Los rasgos diapíricos, localmente manifestándose como volcanes de lodo, asociados a exudaciones de gas, venían siendo vinculados a plegamientos ortogonales a la compresión regional, con base en datos esencialmente geofísicos. En el área fueron identificados rasgos diapíricos en forma de morros y colinas elongadas, domos y pliegues diapíricos, volcanes de lodo y exudaciones de lodo y gas. Los domos y colinas son comúnmente cubiertos por colonias de coral, constituyendo paleo-arrecifes, cuyas edades registradas indican formación desde el plioceno hasta el presente. Fue evidenciado claro control de rasgos diapíricos por lineamentos morfoestructurales de dirección E-W y, subordinadamente, por estructuras WNW-ESE, tanto en la zona costera como en la plataforma continental. Por interpretación de líneas sísmicas y datos estructurales, se corroboró continuidad de lineamentos en la zona inmersa, caracterizándolos, allí también, como rasgos morfotectónicos que controlan el diapirismo de lodo. También se identificó conexión entre los niveles de lodo infrayacentes y las geoformas diapíricas. La inversión de los datos de fallas y estrías indica que las estructuras E-W a NW-SE están relacionadas al esfuerzo regional compresivo orientado en dirección WNW-ESE, siendo las estructuras E-W fallas destrales que se presentan incipientes, y las NW-SE, fallas sinistrales reactivadas, tal como la falla del Canal del Dique, en la zona norte de Cartagena. En ambos casos se detectó componente normal. La ocurrencia de volcanes de lodo indica que los niveles de lodo inferiores están sometidos a alta sobrepresurización, tornando el lodo agente efectivo de fracturamiento hidráulico y de tectónica de membrana. Universidad Pedagógica y Tecnológica de Colombia - UPTC 2009-07-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf https://revistas.uptc.edu.co/index.php/ingenieria_sogamoso/article/view/894 Ingeniería Investigación y Desarrollo; Vol. 8 No. 1: enero-junio de 2009; 42-50 Ingeniería Investigación y Desarrollo; Vol. 8 Núm. 1: enero-junio de 2009; 42-50 2422-4324 1900-771X spa https://revistas.uptc.edu.co/index.php/ingenieria_sogamoso/article/view/894/893 Derechos de autor 2009 Ingeniería Investigación y Desarrollo |
| spellingShingle | continental edge neotectonics Sinu belt mud diapirism thin-skin tectonics margen continental neotectónica Cinturón Sinú diapirismo de lodo tectónica de membrana Aristizábal, Camilo Ferrari, André Silva, Cléverson Neotectonic control of mud diapirism in the Cartagena region, Colombia |
| title | Neotectonic control of mud diapirism in the Cartagena region, Colombia |
| title_alt | Control neotectónico del diapirismo de lodo en la región de Cartagena, Colombia |
| title_full | Neotectonic control of mud diapirism in the Cartagena region, Colombia |
| title_fullStr | Neotectonic control of mud diapirism in the Cartagena region, Colombia |
| title_full_unstemmed | Neotectonic control of mud diapirism in the Cartagena region, Colombia |
| title_short | Neotectonic control of mud diapirism in the Cartagena region, Colombia |
| title_sort | neotectonic control of mud diapirism in the cartagena region colombia |
| topic | continental edge neotectonics Sinu belt mud diapirism thin-skin tectonics margen continental neotectónica Cinturón Sinú diapirismo de lodo tectónica de membrana |
| topic_facet | continental edge neotectonics Sinu belt mud diapirism thin-skin tectonics margen continental neotectónica Cinturón Sinú diapirismo de lodo tectónica de membrana |
| url | https://revistas.uptc.edu.co/index.php/ingenieria_sogamoso/article/view/894 |
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