Movimientos en masa naturales o inducidosnuevas aportaciones al estudio de inestabilidad de laderas en la provincia de León
[EN] Mass movements are one of the geological processes with major socio-economic impact in the world. The strong topography and high rain- fall concentration in mountainous areas are two of the main determining and triggering factors involved in the slope instability directly affecting the province...
| Autores: | , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2018 |
| País: | España |
| Institución: | Universidad de León |
| Repositorio: | BULERIA. Repositorio Institucional de la Universidad de León |
| OAI Identifier: | oai:buleria.unileon.es:10612/21687 |
| Acceso en línea: | https://hdl.handle.net/10612/21687 |
| Access Level: | acceso abierto |
| Palabra clave: | Ingeniería de minas Mass Movement Slope Instability Roman Gold Mining Ancares La Cabrera. |
| Sumario: | [EN] Mass movements are one of the geological processes with major socio-economic impact in the world. The strong topography and high rain- fall concentration in mountainous areas are two of the main determining and triggering factors involved in the slope instability directly affecting the province of León. Until now, much of these mass movements were linked to the natural erosive action. In this work, we have analysed two landslides with similar morphological characteristics and litoestructural imprint in the areas of Ancares and La Cabrera. These valleys are charac- terized by the presence of Roman gold mining works that affect the entire valley. The geological and geomorphological mapping, and comparative photointerpretation of aerial images at different time records allow us to analyse the determining and triggering factors behind these mass move- ments, in which the rupture plane is characterised in both cases by the absence of tensile stress cracks and the presence of opposite dipping fresh quartzites and slates across the slope. Also, the existence of aligned depressions, channel structures and the superimposition of excavations on the slipped material, may support an anthropogenic origin for these mass movement, although further studies are needed to clarify their ori- gin and possible relation to human-induced activity. |
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