Morphostructural analysis of the hydrographic basins of Sabana and Papagayo rivers (middle-lower third), Guerrero State, Mexico
This study presents the morphostructural patterns of the lower parts of the Papagayo and Sabana river basins, formed during the neotectonic (N-Q) stage. The structural framework consists of positive and negative blocks, which inherited their internal structure from different lithologic complexes and...
| Autores: | , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2012 |
| País: | México |
| Institución: | UNIVERSIDAD NACIONAL AUTÓNOMA DE MÉXICO |
| Repositorio: | Investigaciones Geográficas |
| Idioma: | español |
| OAI Identifier: | oai:ojs.pkp.sfu.ca:article/30093 |
| Acceso en línea: | https://www.investigacionesgeograficas.unam.mx/index.php/rig/article/view/30093 |
| Access Level: | acceso abierto |
| Palabra clave: | Morphostructure structural-geomorphological cartography Morfoestructura cartografía estructuro-geomorfológica |
| Sumario: | This study presents the morphostructural patterns of the lower parts of the Papagayo and Sabana river basins, formed during the neotectonic (N-Q) stage. The structural framework consists of positive and negative blocks, which inherited their internal structure from different lithologic complexes and from older phases of tectonic deformation. The morphostructures can be distinguished, among others: massive, on granite basement; blocks on folds and monoclinals, on terrigenous and calcareous rocks; chaotic, on gravitational deposits; unconsolidated, on young deposits; and others types. Neotectonics has acted differentially, determining diverse faulting styles. The designs of granitic and metamorphic foliations are superimposed on those styles, as a tectonically passive expression of lithology. Finally, the study found 32 types of morphostructures, associated in several geotectonic communities of blocks, among others: irregular system of blocks; system of stepped triangular horst, deformed by transcurrent faults; isometric system of stepped blocks; alternate asymmetral system of horst and graben; system of stepped blocks on circular and annular structures; and others. |
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