Espeleosismología de la Cueva de los Casares, Guadalajaraevidencias de un posible paleoterremoto
- R. Pérez-López 1
- M. Alcaraz-Castaño 2
- M.Á. Rodríguez-Pascua 1
- P.G. Silva 3
- L. Luque 2
- M.A. Perucha-Atienza 1
- J. Elez 3
- J.L. Giner-Robles 4
- E. Roquero 5
- J. Alcolea-González 2
- 1 IGME
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2
Universidad de Alcalá
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- 3 Universidad Salamanca
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4
Universidad Autónoma de Madrid
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5
Universidad Politécnica de Madrid
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ISSN: 1576-5172
Argitalpen urtea: 2021
Zenbakien izenburua: X Congreso Geológico de España
Zenbakia: 18
Orrialdeak: 1020
Mota: Artikulua
Beste argitalpen batzuk: Geotemas (Madrid)
Laburpena
Los Casares Cave (Riba de Saelices, Guadalajara) represents an excellent Middle Palaeolithic archaeological site with evi- dence of Neanderthal –Sapiens different occupational stages (ca. 45±3 ka BP, Alcaraz-Castaño et al., 2017). Despite of the small karstic system spatial development (250 m length and E-W trend), a destruction layer was recognized affecting the spe- leothems. Different apparently coetaneous soda-straws, stalactites and even one stalagmite were broken. The location of this destruction layer is placed out from possible anthropogenic manipulation, in a hanging roof 6 m high. We have carried out a systematic measurement of broken soda-straws and samples were collected to be analysed by Uranium series. Preliminary results suggest the occurrence of a paleoearthquake either from far-field seismic source (> 50 km) of minimum magnitude M > 6, or near-field seismic source (< 10 km), and with magnitude M > 4.5. The age of this event could seed light about the hypothesis that the human communities living into the cave were affected by this earthquake.