Person:
Muñoz Martín, Alfonso

Profile Picture
First Name
Alfonso
Last Name
Muñoz Martín
URI
https://hdl.handle.net/20.500.14352/75220
Affiliation
Universidad Complutense de Madrid
Faculty / Institute
Ciencias Geológicas
Department
Geodinámica, Estratigrafía y Paleontología
Area
Geodinámica Interna
Identifiers
UCM identifierORCIDScopus Author IDWeb of Science ResearcherIDDialnet IDGoogle Scholar ID

Filters

20044
Reset filters

Settings

Author: Muñoz Martín, Alfonso × End date: 2009 × Start date: 2003 × Subject: 551.24 ×

Search Results

Now showing 1 - 4 of 4
  • Thumbnail Image
    Item
    El cabalgamiento de Valdesotos: consecuencias de la acomodación del acortamiento cenozoico en el zócalo del Sistema Central
    (Geotemas, 2004) Olaiz Campos, Antonio José; Vicente Muñoz, Gerardo de; Vegas, Ramón; González Casado, José Manuel; Muñoz Martín, Alfonso; Álvarez, J.
    We describe and study structural evidences concerning to Alpine tectonics at NE sector o f the Spanish Central System (SCS). In Valdesotos area, the Hercynian basement is uplifted over Mesozoic sediments, throughout a main SW verging thrust. Fault population analysis and geological mapping has been used to look at the relation between structures in the basement and in the cover. As a consequence of accommodation of strains in the basement, kink folds are developed, such as secondary thrust and folds in the tegument. All these meso- and macrostructures seem to answer to a shortening in agreement with the Cenozoic deformation.
  • Thumbnail Image
    Item
    Análisis de la fracturación y campos de paleoesfuerzos en el centrooeste de la Península Ibérica.
    (Geotemas, 2004) Antón López, Loreto; Muñoz Martín, Alfonso; Vicente Muñoz, Gerardo de
    The Tormes Dome is a granitic massif emplaced during the Hercinian orogeny and later deformed by several posthercynian fracturation episodes. Three main paleostress fields have been obtained from stress inversion o f 1375 fault-slip data collected throughout the study area. The maximum horizontal stress (SHMAX) are oriented N-S, NE-SW and E-W with extensional and strike-slip stress regimes. Difficulties to determine age dating o f the three paleostress fields made necessary to enlarge the study area to the surrounding Cenozoic basins borders. In addition, geocronological information obtained form K-Ar dating o f fault gouges collected in the Tomes Dome has been used to establish the relative chronology of the three tectonic episodes from field data and determine their activity periods form Mesozoic to present time. An important result is that there is no relevant brittle tectonic activity associated with the recent NW-SE stress field in the western peninsula from Upper Miocene to the present times and some field evidences, as well as two focal mechanisms of earthquakes occurred in the area seem that in the Tormes Dome the recent stress field present an Shmax oriented N-S.
  • Thumbnail Image
    Item
    Los corredores de fallas de Regua-Verin y Vilariça: Zonas de transferencia de la deformación intraplaca en la Península Ibérica
    (Geotemas, 2004) Vegas, Ramón; Vicente Muñoz, Gerardo de; Muñoz Martín, Alfonso; Palomino, R.
    A substantial part of the intraplate deformation in the Iberian Foreland is transferred from the Cantabro-Pyrenean border by means of two strike-slip deformation belts, the Regua-Verin and Vilariça fault corridors. The Neogene and recent tectonic activity along these intraplate strikeslip belts is responsible for the onset of a geomorphic barrier between the Duero Basin and the Atlantic Margin.
  • Thumbnail Image
    Item
    Reactivación intraplaca de un relieve apalachiano: Las Sierras de Guadalupe y Montánchez
    (Geotemas, 2004) Álvarez, J.; Muñoz Martín, Alfonso; Vicente Muñoz, Gerardo de; Vegas, Ramón
    In this work, we reconcile structural data analysis with géomorphologie observations to better constrain the morphotectonic evolution of the Guadalupe and Montánchez intraplate ranges located in western central Iberia. Fault slip data analysis and geological mapping suggest a global episode of uplift and northwest tilting during Pliocene times. The Hercynian basement was then uplifted by a NW verging thrust developing Plio-Quaternary syntectonic alluvial fans "Raña deposits". The present-day landscape of these ranges should be interpreted as a result of the interaction of (neo) tectonic forcing and longitudinal fluvial erosion.