Geology of dikes emplaced in terphra, SE Sierra de Pachuca
The present work is part of a cartographic project conducted in the southeast portion of the Sierra de Pachuca, in which the occurrence of andesitic dikes, preferentially oriented 245/31 and emplaced in tephra deposits, is reported. In addition, based on secondary structures associated with fault pl...
| Autores: | , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2022 |
| País: | México |
| Institución: | UNIVERSIDAD AUTÓNOMA DEL ESTADO DE HIDALGO |
| Repositorio: | PÄDI Boletín Científico de Ciencias Básicas e Ingeniería del ICBI |
| Idioma: | español |
| OAI Identifier: | oai:repository.uaeh.edu.mx:article/8212 |
| Acceso en línea: | https://repository.uaeh.edu.mx/revistas/index.php/icbi/article/view/8212 |
| Access Level: | acceso abierto |
| Palabra clave: | Cartography Dikes Sierra de Pachuca Tephra Paleo stress Recent Volcanism Cartografía Diques Tefra Paleoesfuerzos Volcanismo reciente |
| Sumario: | The present work is part of a cartographic project conducted in the southeast portion of the Sierra de Pachuca, in which the occurrence of andesitic dikes, preferentially oriented 245/31 and emplaced in tephra deposits, is reported. In addition, based on secondary structures associated with fault planes, the paleo stress regime was reconstructed, resulting in a normal fault regime with the main axis oriented: s1=336/74, s2=121/13 y s3=213/09. Where s2 y s3, are the medium extension and maximum compression, respectively. Considering that the emplacement of dikes parallels the maximum compression, two distinct stress regimes have been interpreted, with a difference of 112° measured along a plane oriented 202/39. Finally, tephra deposits are recognized as the youngest lithological unit and, consequently, postdated by the emplacement of dikes, constituting part of the most recent stage of volcanism in the study area. |
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