Geometría y cinemática de la cizalla extensional de Santa Elena-Puente Génave (Zona Centroibérica, Sierra Morena Oriental)

  1. L.M. Martín Parra 1
  2. J. Matas 1
  3. D.J. Martínez Poyatos 2
  4. F. González Lodeiro 2
  1. 1 Instituto Geológico y Minero de España
    info

    Instituto Geológico y Minero de España

    Madrid, España

    ROR https://ror.org/04cadha73

  2. 2 Universidad de Granada
    info

    Universidad de Granada

    Granada, España

    ROR https://ror.org/04njjy449

Revista:
Geotemas (Madrid)

ISSN: 1576-5172

Año de publicación: 2004

Título del ejemplar: IV Congreso Geológico de España (Zaragoza, 12-15 julio, 2004)

Número: 6

Páginas: 89-91

Tipo: Artículo

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Otras publicaciones en: Geotemas (Madrid)

Resumen

We describe the existence of a late variscan extensional shear zone in the southeastern Central Iberian Zone. The shear zone is E-W oriented, exceeds 100 km along strike, and shows a top-to-thesouth sense o f movement. The location of the shearing is biologically controlled by a narrow band of 50-150 m o f Silurian ampelites in which deformation concentrates. The ampelites and underlying rocks, including a igneous body, show the characteristics of ductile to brittle simple shear deformation. The shear zone creates a maximum cartographic gap that makes superpose Lower Carboniferous rocks directly onto Silurian ampelites, and that ones onto Middle Ordovician rocks. The shear » zone and other structures present in the area (two perpendicular dike networks and late open folds parallel to the shear zone) are interpreted as formed during the same extensional episode.

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