Caracterización estructural de la cordillera Chongón Colonche entre el cantón Guayaquil y Daule en el sector de Pascuales, Provincia del Guayas
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2019-09
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Facultad de Ciencias Naturales. Universidad de Guayaquil
Resumen
La presente investigación tuvo como objetivo determinar las características geológicas y estructurales de los afloramientos de la Cordillera Chongón Colonche en el sector Pascuales, ubicado entre los cantones Guayaquil y Daule en la Provincia del Guayas, mediante un estudio ejecutado a través de varias etapas metodológicas que se iniciaron con la recopilación bibliográfica y la elaboración de un mapa base, luego continuó con trabajos de campo en los que se describieron 84 estaciones ubicadas en canteras, senderos y cortes viales, dando como resultados la elaboración de un mapa geológico – estructural a escala 1:25.000 que contó con la información estructural de fallas que más tarde fueron interpretadas a través del software libre Faultkin. Se concluyó que la geomorfología actual está sujeta a procesos erosivos de paleoestructuras y mediante el análisis estadístico de todos los datos de fallas en una proyección estereográfica se identificó un régimen distensivo de sentido noroeste – sureste generando así tres sistemas principales de fallas de rumbo con sentido noreste – suroeste, noroeste – suroeste y un tercer sistema con sentido nornoroeste - sursureste, que corresponderían a fallas producto de una deformación tipo transtensión de una zona de cizalla.
The objective of this research was to determine the geological and structural characteristics of the outcrops of the Cordillera Chongón Colonche in the Pascuales sector, located between the Guayaquil and Daule cantons in the Province of Guayas, through a study carried out through several methodological stages that they began with the bibliographic compilation and the elaboration of a base map and continued with field work in which 84 stations located in quarries, paths and road sections were described, resulting in the development of a geological-structural map at scale 1: 25,000 that had the structural information of failures that were later interpreted through free Faultkin software. It was concluded that the current geomorphology is subject to erosive processes of paleo-structures and by means of the statistical analysis of all the fault data in a stereographic projection a northwest - noutheast sense distensive regime was identified thus generating three main systems of heading faults with northeast direction - southwest, northwest - southwest and a third system with a northwest - southwest direction, which would correspond to faults resulting from a deformation type transtension of a shear zone.
The objective of this research was to determine the geological and structural characteristics of the outcrops of the Cordillera Chongón Colonche in the Pascuales sector, located between the Guayaquil and Daule cantons in the Province of Guayas, through a study carried out through several methodological stages that they began with the bibliographic compilation and the elaboration of a base map and continued with field work in which 84 stations located in quarries, paths and road sections were described, resulting in the development of a geological-structural map at scale 1: 25,000 that had the structural information of failures that were later interpreted through free Faultkin software. It was concluded that the current geomorphology is subject to erosive processes of paleo-structures and by means of the statistical analysis of all the fault data in a stereographic projection a northwest - noutheast sense distensive regime was identified thus generating three main systems of heading faults with northeast direction - southwest, northwest - southwest and a third system with a northwest - southwest direction, which would correspond to faults resulting from a deformation type transtension of a shear zone.
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FALLAS, TRANSTENSIÓN, CORDILLERA CHONGÓN COLONCHE, ESFUERZO