Journal
MARINE GEOLOGY
Volume 337, Issue -, Pages 98-111Publisher
ELSEVIER
DOI: 10.1016/j.margeo.2013.02.002
Keywords
1755 Lisbon tsunami; tsunami deposits; grain size distribution; X-ray fluorescence; X-ray tomography; anisotropy of magnetic susceptibility
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Funding
- French National Research Agency [ANR-08-RISKNAT MAREMOTI]
- Conseil Regional d'Auvergne [TSUNAMIX]
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A multi-proxy approach using trench sediment analysis on the southwestern coast of Spain (Los Lances Bay, Andalusia) provides a high-resolution record of the 1755 Lisbon tsunami and offers new means to interpret tsunami deposits. A combination of sedimentological (grain size, sorting, AMS), micromorphological (X-ray tomography and radiography, thin sections) and geochemical analyses (X-ray microfluorescence, ICP-AES) combines to provide a comprehensive reconstruction of the different phases of tsunami deposition and flow dynamics. Vertical variations in sediment texture, fabric and composition of the 1755 tsunami deposits in Los Lances are then discussed with reference to existing literature on diagnostic criteria commonly used for identifying and interpreting tsunami deposits. Finally possible leads for future investigation are proposed. (C) 2013 Elsevier B.V. All rights reserved.
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