Structural characteristics of the region between Punta Banda and Punta Santo Tomas, Baja California, Mexico

Structural characteristics of the region between Punta Banda and Punta Santo Tomas, Baja California, Mexico

The continuous reflection seismic profiles that are available of the onshore California continental borderland, between Punta Banda and Punta Santo Tomás, B.C., show a series of basins and topographical heights with a similar direction as the fault systems located in the continental region. From the...

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Hauptverfasser: Moldrano-Salgado, R, Wong-Ortega, V
Format: Online
Sprache:eng
Veröffentlicht: Iniversidad Autónoma de Baja California 1991
Online Zugang:https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/779
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spelling oai:cienciasmarinas.com.mx:article-7792024-01-18T20:14:15Z Structural characteristics of the region between Punta Banda and Punta Santo Tomas, Baja California, Mexico Structural characteristics of the region between Punta Banda and Punta Santo Tomás, Baja California, México Moldrano-Salgado, R Wong-Ortega, V The continuous reflection seismic profiles that are available of the onshore California continental borderland, between Punta Banda and Punta Santo Tomás, B.C., show a series of basins and topographical heights with a similar direction as the fault systems located in the continental region. From the analysis of these profiles, it has been possible to determine the marine expression of the Bahía Soledad fault zone, which mainly affects the sedimentary deposits of the Ensenada basin. Furthermore, evidence was found of extensional processes, such as negative flower structures associated to the main line of the San Isidro fault. From this, we infer that the study area is controlled by tectonic processes caused by the strike-slip fault systems located in the area and that are generally consistent with a right-lateral fault model characteristic of a region subjected to tensional stress. Los perfiles sísmicos de reflexión continua que se tienen de la porción interior del Borde Continental de California, comprendida entre Punta Banda y Punta Santo Tomás, B.C., muestran una serie de cuencas y altos topográficos con orientación similar a los sistemas de fallas emplazados en la región continental. Del análisis de estos perfiles se ha podido determinar la expresión marina de la zona de falla de Bahía Soledad, la que afecta principalmente a los depósitos sedimentarios de la depresión Ensenada. Además, se encontraron evidencias de procesos extensionales, tales como estructuras de flujo inverso (negative flower structure) asociados al trazo principal de la falla San Isidro. Esto último nos hace suponer que el área de estudio está controlada por los procesos tectónicos causados por los sistemas de fallas de rumbo emplazados en la zona y que en términos generales son consistentes con un modelo de fallamiento lateral derecho característico de una región sujeta a esfuerzos tensionales. Iniversidad Autónoma de Baja California 1991-03-06 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article Artículo Arbitrado application/pdf https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/779 10.7773/cm.v17i1.779 Ciencias Marinas; Vol. 17 No. 1 (1991); 79-97 Ciencias Marinas; Vol. 17 Núm. 1 (1991); 79-97 2395-9053 0185-3880 eng https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/779/705 Copyright (c) 1991 R Moldrano-Salgado, V Wong-Ortega https://creativecommons.org/licenses/by/4.0
institution Ciencias Marinas
collection OJS
language eng
format Online
author Moldrano-Salgado, R
Wong-Ortega, V
spellingShingle Moldrano-Salgado, R
Wong-Ortega, V
Structural characteristics of the region between Punta Banda and Punta Santo Tomas, Baja California, Mexico
author_facet Moldrano-Salgado, R
Wong-Ortega, V
author_sort Moldrano-Salgado, R
title Structural characteristics of the region between Punta Banda and Punta Santo Tomas, Baja California, Mexico
title_short Structural characteristics of the region between Punta Banda and Punta Santo Tomas, Baja California, Mexico
title_full Structural characteristics of the region between Punta Banda and Punta Santo Tomas, Baja California, Mexico
title_fullStr Structural characteristics of the region between Punta Banda and Punta Santo Tomas, Baja California, Mexico
title_full_unstemmed Structural characteristics of the region between Punta Banda and Punta Santo Tomas, Baja California, Mexico
title_sort structural characteristics of the region between punta banda and punta santo tomas, baja california, mexico
description The continuous reflection seismic profiles that are available of the onshore California continental borderland, between Punta Banda and Punta Santo Tomás, B.C., show a series of basins and topographical heights with a similar direction as the fault systems located in the continental region. From the analysis of these profiles, it has been possible to determine the marine expression of the Bahía Soledad fault zone, which mainly affects the sedimentary deposits of the Ensenada basin. Furthermore, evidence was found of extensional processes, such as negative flower structures associated to the main line of the San Isidro fault. From this, we infer that the study area is controlled by tectonic processes caused by the strike-slip fault systems located in the area and that are generally consistent with a right-lateral fault model characteristic of a region subjected to tensional stress.
publisher Iniversidad Autónoma de Baja California
publishDate 1991
url https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/779
_version_ 1792095490046689280

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