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(Article of periodic en Anglais - 2013)

Document title

Stratigraphic architecture and alluvial geoarchaeology of an ephemeral fluvial infilling : Climatic versus anthropogenic factors controlling the Holocene fluvial evolution in southeastern Spain drylands

Authors(s) and Affiliation(s)

GARCÍA-GARCÍA F. (1) ; BOHORQUEZ P. (2) ; MARTÍNEZ-SÁNCHEZ C. (3) ; PÉREZ-VALERA F. (1) ; CALERO J.A. (1) ; SÁNCHEZ-GÓMEZ M. (1) ;
(1) Dep. de Geología, Univ., Jaén, ESPAGNE
(2) Dep. de Ingeniería Mecánica y Minera, Univ., Jaén, ESPAGNE
(3) ArqueoTec, Murcia, ESPAGNE

Abstract

Two stages of depositional high-discharge fluvial environments are recorded in the infilling of a rock shelter in a canyon of the Segura River : (1) aggradational alluvial gravels in the lower part, interpreted as braided channel bars (7000 to 2030 cal BC), and (2) slackwater flood deposits in the upper part (between 2030 cal BC and after 900 AD) during a stage of main channel incision. Extreme palaeofloods that inundated the cave from the canyon inlet were successively higher and are correlated to quick-rising flash floods. The characteristics of cultural remains preserved by flood deposits reveal long periods of human cave occupation (and passage through the canyon) without extreme floods occurring. These long periods of low-discharge fluvial flow punctuated by catastrophic flash floods are linked to a torrential fluvial regime. The climatic versus anthropogenic factors affecting the fluvial development are discussed. Methodologically, the combination of fluvial palaeohydrology and geoarchaeology appears to be a robust tool to reconstruct long-term Holocene climate changes

Source

Article of periodic

published at : Catena / ISSN 0341-8162

Editor : Catena, Cremlingen-Destedt - ALLEMAGNE (1973)

Millesime : 2013, vol. 104 [pp. 272-279]

Bibliographic references : 36 ref.

Collation : 5 fig.

Language

Anglais

INIST-CNRS, Cote INIST : 16767

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1016/j.catena.2012.12.006

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2013
Refdoc record number (ud4) : 27624644 : Permanent link - XML version
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