http://www.cnr.it/ontology/cnr/individuo/prodotto/ID48980
Facies and faunal assemblage changes in response to the Holocene transgression in the Lagoon of Mayotte (Comoro Archipelago, SW Indian Ocean) (Articolo in rivista)
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- Label
- Facies and faunal assemblage changes in response to the Holocene transgression in the Lagoon of Mayotte (Comoro Archipelago, SW Indian Ocean) (Articolo in rivista) (literal)
- Anno
- 2005-01-01T00:00:00+01:00 (literal)
- Alternative label
Zinke J. (1) (4), Reijmer J.J.G. (5), Taviani M. (2), Dullo W.C. (1), Thomassin B. (3) (2005)
Facies and faunal assemblage changes in response to the Holocene transgression in the Lagoon of Mayotte (Comoro Archipelago, SW Indian Ocean)
in Facies
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- Zinke J. (1) (4), Reijmer J.J.G. (5), Taviani M. (2), Dullo W.C. (1), Thomassin B. (3) (literal)
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- ISI Web of Science (WOS) (literal)
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- (1) IFM-GEOMAR, Leibniz-Institut für Meereswissenschaften, Wischhofstrasse 1-3, Kiel, 24148, Germany;
(2)Istituto di Scienze Marine, Sez. Geologia Marina, Consiglio Nazionale delle Ricerche, Via Gobetti 101, 40129 Bologna, Italy;
(3) Centre d'Océanology de Marseille, Station Marine d'Endoume, Chemin de la batterie des Lions, 13007 Marseille, France;
(4) Vrije Universiteit Amsterdam, FALW, De Boelelaan 1085, 1081 HV Amsterdam, The Netherlands;
(5) Université de Provence (Aix-Marseille I), Centre de Sédimentologie-Paléontologie FRE, CNRS 2761 Géologie des Systèmes Carbonatés, 3, place Victor Hugo, Case 67, 13331 Marseille Cédex 3, France
(literal)
- Titolo
- Facies and faunal assemblage changes in response to the Holocene transgression in the Lagoon of Mayotte (Comoro Archipelago, SW Indian Ocean) (literal)
- Abstract
- This paper documents the facies change in response to the Holocene transgression within five sediment cores taken in the lagoon of Mayotte, which contain a Type-1 depositional sequence (lowstand, transgressive and highstand deposits underlain by an erosive sequence boundary). Quantitative compositional analysis and visual examination of the bioclasts were used to document the facies changes. The distribution of the skeletal and non-skeletal grains in the lagoon of Mayotte is clearly controlled by (1) the rate and amplitude of the Holocene sea-level rise, (2) the pre-Holocene basement topography and (3) the growth-potential of the barrier reef during sea-level rise, and the changes in bathymetry and continuity during this period. The sequence boundary consists of the glacial karst surface. The change-over from the glacial lowstand is marked by the occurrence of mangrove deposits. Terrigenous and/or mixed terrigenous-carbonate muds to sandy muds with a mollusc or mollusc-ostracod assemblage dominate the transgressive deposits. Mixed carbonate-siliciclastic or carbonate sand to gravel with a mollusc-foraminifer or mollusc-coral-foraminifer assemblage characterize the early highstand deposits on the inner lagoonal plains. The early highstand deposits in the outer lagoonal plains consist of carbonate muds with a mollusc-foraminifer assemblage. Late highstand deposits consist of terrigenous muds in the nearshore bays, mixed terrigenous-carbonate sandy muds to sands with a mollusc-foraminifer assemblage on the inner lagoonal plains and mixed muds with a mollusc-foraminifer assemblage on the outer deep lagoonal plains. The present development stage of the individual lagoons comprises semi-enclosed to open lagoons with fair or good water exchange with the open ocean.
(literal)
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