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Holocene coastal stratigraphy, coastal changes and potential palaeoseismological implications inferred from geo-archives in Central Chile (29-32°S)

Reconstructing and modeling of paleotsunami events. Multi-proxy approaches, geophysical studies, numerical simulations

Auteur(s) et Affiliation(s)

MAY, S.M.
Inst. of Geography, Univ., Cologne, Allemagne
PINT, A.
Inst. of Geography, Univ., Cologne, Allemagne
RIXHON, G.
Inst. of Geography, Univ., Cologne, Allemagne
KELLETAT, D.
Inst. of Geography, Univ., Cologne, Allemagne
WENNRICH, V.
Inst. of Geology and Mineralogy, Univ., Köln, Allemagne
BRÜCKNER, H.
Inst. of Geography, Univ., Cologne, Allemagne
VÖTT, A.
Natural Hazard Research and Geoarcheology, Inst. for Geography, Johannes Gutenberg Univ., Mainz, Allemagne
Inst. of Neotectonics and Natural Hazards, RWTH Univ., Aachen, Allemagne
Lab. of Mineralogy and Geology, Dept. of Geological Sciences and Atmospheric Environment, Agricultural Univ., Athens, Grece


Description :
Using sedimentological, geomorphological and microfaunal evidence, coeval geomorphodynamic and palaeoenvironmental changes at 4 different locations between 29° 50' and 32° 20' S in Central Chile were identified in estuary systems, coastal swamps and coastal plains. Changes of coastline elevation, morphodynamic activity and/or coastal environments, as well as the formation of a liquefaction layer took place during the last c. 400 years. Moreover, major flooding events related to strong El Niño conditions are assumed to have influenced the coastal stratigraphy by depositing high energy fluvial deposits. The results suggest that the coastal environment, geomorphology and stratigraphy are considerably influenced by tectonic processes in the study area; a relation of the presented findings to the 1730 Great Valparaíso Earthquake is assumed.


Type de document :
Article de monographie

Source :
Zeitschrift für Geomorphologie, issn : 0372-8854, 2013, vol. 57, n°. 4, Supl., p. 201-228, nombre de pages : 28, Références bibliographiques : 4 p.

Date :
2013

Editeur :
Pays édition : Allemagne, Stuttgart, Gebruder Borntraeger

Langue :
Anglais
Droits :
Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI)