Testing rock magnetic and AMS methods in tsunami and storm-induced deposits

Storm- and tsunami-deposits are generated by similar depositional mechanisms making their discrimination hard to establish using classic sedimentologic methods. A promising approach is to use rock magnetism techniques to search for new physical benchmarks of tsunami deposits and to integrate them into a multi-disciplinary study. To test our method, we investigate the 1755 Lisbon tsunami deposit from the Boca do Rio estuary and other Tsunami-induced deposits from Algarve (Portugal) and Huelva (Spain), as well as storm-like deposits for comparison. Magnetic methods repose on bulk (magnetic susceptibility, SIRM, Hc) and directional (AMS, paleomagnetism) magnetic properties.

Keywords

Rock magnetism Storm deposit AMS Tsunami deposit

URI

http://hdl.handle.net/10400.1/3305

Citation

Font, Eric; Duarte, Silvia; Veiga-Pires, Cristina; Simões, Nuno; Muñoz, Francisco Ruiz; Abad, Manuel; Pozo, Manuel; Nave, Silvia; Costa, Susana; Rebelo, Luis. Testing Rock Magnetic and AMS Methods in Tsunami- and Storm-induced Deposits, Trabalho apresentado em 13th Castle Meeting, In 13th Castle Meeting, Zvolen, 17-23 June, 2012.