3D electrical imaging of subsurface seismic deformations affecting the late roman archaelogical site of la Magdalena (central Spain)
- P.G. Silva
- P. Carrasco García
- M.A. Rodríguez Pascua
- Jorge L. Giner Robles
- J. Elez
- Elvira Roquero
- C. Heras
- M.A. Perucha
- A.B. Bastida
- O. Peña Pérez
- Ana Gomes (ed. lit.)
- Célia Gonçalves (ed. lit.)
- Lino André (ed. lit.)
- Nuno Bicho (ed. lit.)
- Tomasz Boski (ed. lit.)
Publisher: Asociación Española para el Estudio del Cuaternario ; Grupo de Trabalho Português para o Estudo do Quaternário (GTPEQ)
Year of publication: 2017
Pages: 121-124
Type: Book chapter
Abstract
This work presents the preliminary results of 3D geophysical imaging of subsurface deformations linked to surface coseismic damage recorded in the Late Roman (4th Century AD) la Magdalena archaeological site (Henares Valley, Central Spain). Five Electrical Tomography Resistivity profiles (ERT) displays soft-sediment deformation structures in the clayey Miocene substratum beneath the Holocene floodplain deposits. These appears upwarped and affected by severe liquefaction structures and suspect fractures as a consequence of seismic shaking. Observed deformations can not be only linked to the Late Roman seismic event, but to a complex and longer Holocene seismic history.