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(Article of periodic en Anglais - 2014)

Document title

Holocene sea levels of Bonaire (Leeward Antilles) and tectonic implications

published at : Climatic signals in geomorphological systems

Authors(s) and Affiliation(s)

ENGEL M. (1) ; BRÜCKNER H. (1) ; SCHEFFERS A.M. (3) ; MAY S.M. (1) ; KELLETAT D.H. (1) ;
(1) Univ., Inst. of Geography, Köln, ALLEMAGNE

  • Univ. of Duisburg-Essen, Inst.of Geography, Essen, ALLEMAGNE
(3) Southern Cross Univ., Southern Cross GeoScience, Lismore, AUSTRALIE

Abstract

The AA. present a relative sea-level (RSL) curve for the island of Bonaire (S Caribbean). They used 42 C ages from 20 sediment cores taken from 9 different sedimentary archives along the coast. The sedimentary environment of each index point was linked to a palaeo-water depth based on literature and field observations. The index points trace a local RSL history of decelerating rise since 7000-6000 years ago and subsequent asymptotical approximation, similar to existing RSL curves from Curaçao and Venezuela. The results were compared to a simulation of Holocene sea-level history (reference model) which considers global effects and regional GIA (including consequences for geopotential and vertical position of earth surface). Even though the central and NW parts of Bonaire experienced slow tectonic uplift of up to 50 cm since the mid-Holocene and tentative correction for compaction was applied, the new RSL curve for Bonaire runs slightly below the reference model

Source

Thematical fascicle

published at : Zeitschrift für Geomorphologie / ISSN 0372-8854 / CODEN ZGMPAG

Editor : Gebruder Borntraeger, Stuttgart - ALLEMAGNE (1925)

Millesime : 2014, vol. 58, no 1 [pp. 159-178]

Bibliographic references : 48 ref.

Collation : fig., tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 8829

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1127/0372-8854/2012/S-00111

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2014
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