Universität zu Köln

Feist, Lisa ORCID: 0000-0001-6422-4175, Frank, Sebastian, Bellanova, Piero, Laermanns, Hannes, Caemmerer, Christoph, Mathes-Schmidt, Margret, Biermanns, Peter, Brill, Dominik ORCID: 0000-0001-8637-4641, Costa, Pedro J. M., Teichner, Felix ORCID: 0000-0003-4276-0983, Brueckner, Helmut, Schwarzbauer, Jan ORCID: 0000-0001-7307-9491 and Reicherter, Klaus (2019). The sedimentological and environmental footprint of extreme wave events in Boca do Rio, Algarve coast, Portugal. Sediment. Geol., 389. S. 147 - 161. AMSTERDAM: ELSEVIER. ISSN 1879-0968

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Abstract

In 1755 CE, a strong earthquake followed by a transatlantic tsunami destroyed large coastal areas; it also left its sedimentary imprints in the Boca do Rio valley (western Algarve, Portugal). This tsunami layer is very well preserved and has been analysed in several studies. Deposits of preceding extreme wave events, however, have rarely been described for the entire Algarve coast. In this study, we present a multiproxy analysis of seven sediment cores from the Boca do Rio region, organized in two crossing transects, one parallel and the other perpendicular to the coastline. The geochronological framework has been established by combining radiocarbon and optically stimulated luminescence dating with sedimentological and geochemical analyses (XRF, C/N, magnetic susceptibility, granulometry, micropalaeontology), and covers the palaeogeographical evolution of that area for the last four millennia. As expected, the 1755 CE tsunami was easily identified at all coring sites, as a sandwiched stratum between fine-grained alluvium. This event layer presents several tsunami characteristics, such as erosive basal contact, rip-up clasts, a fining-upward sequence, and a mud cap. At one coring site, a second extreme wave event layer of marine origin was detected within floodplain deposits, due to its granulometric, XRF, magnetic susceptibility and micropalaeontological properties. It is stratigraphically located below the 1755 CE Lisbon tsunami layer and can be associated with another yet undocumented extreme wave event, most likely dating to the mid or late 1st millennium CE. (C) 2019 Elsevier B.V. All rights reserved.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Feist, Lisa UNSPECIFIED orcid.org/0000-0001-6422-4175 UNSPECIFIED Frank, Sebastian UNSPECIFIED UNSPECIFIED UNSPECIFIED Bellanova, Piero UNSPECIFIED UNSPECIFIED UNSPECIFIED Laermanns, Hannes UNSPECIFIED UNSPECIFIED UNSPECIFIED Caemmerer, Christoph UNSPECIFIED UNSPECIFIED UNSPECIFIED Mathes-Schmidt, Margret UNSPECIFIED UNSPECIFIED UNSPECIFIED Biermanns, Peter UNSPECIFIED UNSPECIFIED UNSPECIFIED Brill, Dominik UNSPECIFIED orcid.org/0000-0001-8637-4641 UNSPECIFIED Costa, Pedro J. M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Teichner, Felix UNSPECIFIED orcid.org/0000-0003-4276-0983 UNSPECIFIED Brueckner, Helmut UNSPECIFIED UNSPECIFIED UNSPECIFIED Schwarzbauer, Jan UNSPECIFIED orcid.org/0000-0001-7307-9491 UNSPECIFIED Reicherter, Klaus UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-135864
DOI:	10.1016/j.sedgeo.2019.06.004
Journal or Publication Title:	Sediment. Geol.
Volume:	389
Page Range:	S. 147 - 161
Date:	2019
Publisher:	ELSEVIER
Place of Publication:	AMSTERDAM
ISSN:	1879-0968
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language SEA-LEVEL RISE; 1755 LISBON TSUNAMI; SEDIMENTARY RECORD; ROMAN TIMES; GUADALQUIVIR-ESTUARY; SW SPAIN; CADIZ; DEPOSITS; INUNDATION; SIGNATURES Multiple languages Geology Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/13586