Paleoceanography for the last 195,000 years in the Solomon Sea (ODP Site 1109) by means of calcareous nannofossils

Takahashi, Kyoma; Okada, Hisatake

doi:10.1016/s0377-8398(01)00010-x

Cited by 6 publications

(1 citation statement)

References 25 publications

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“…In most studies, small Noelaerhabdaceae (also small placoliths ;<3μm), including both SG and VSR, are grouped together to monitor past nutrient conditions (Aizawa et al, 2004;Takahashi and Okada, 2000;Takahashi and Okada, 2001) Fig. 9.6.…”

Section: Small Noelaerhabdaceaementioning

confidence: 99%

Evolución paleoceanográfica del Oceáno Austral (sectores subantárticos del Atlántico y Pacífico) durante el Plioceno tardio-Pleistoceno

Ballegeer¹

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This thesis examines the calcareous nannofossil record of Ocean Drilling Program (ODP) sites 1090 (South-Atlantic) and 1172 (South-Pacifi c) for the Plio-Pleistocene (3.5-1.8 Ma) time interval. Calcareous nannofossils (coccolithophores) are an excellent tool to monitor the surface water conditions of the Southern Ocean since they are sensitive to various environmental factors such as light, temperature, nutrient concentration. The records have been compared with the benthic isotope records to reconstruct the paleoceanographic changes of the Southern Ocean during the study interval. The main objectives of this study are: (i) to characterize the Plio-Pleistocene calcareous nannofossil assemblage of the Subantarctic Ocean, (ii) to identify changes in the Plio-Pleistocene Southern ocean circulation through the nannofossil record and (iii) to look for signifi cant changes/anomalies in the record that can be related to the Eltanin impact instead of being explained by orbital variations. The fragmentation of the coccoliths found in the sediments was related to dissolution and different dissolution proxies were calculated: (1) DL based on the disarticulation of Calcidiscus leptoporus, (2) DP based on the fragmentation Coccolithus pelagicus, (3) NF based on the number of fragments per fi eld of view and (4) SF based on the size of the fragments. These dissolution proxies confi rm that the nannofossil signal is not Contents Aims and structure of the thesis I. General Framework II. Objectives III. Structure of the thesis

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Section: Small Noelaerhabdaceaementioning

confidence: 99%

Evolución paleoceanográfica del Oceáno Austral (sectores subantárticos del Atlántico y Pacífico) durante el Plioceno tardio-Pleistoceno

Ballegeer¹

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Late Holocene shoreface evolution of the wave dominated Durban Bight, KwaZulu-Natal, South Africa: A mixed storm and current driven system

Green

Ovechkina

Mostovski

2012

Continental Shelf Research

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Late Quaternary paleoceanography deduced from coccolith assemblages in a piston core recovered off the central Japan coast

Aizawa

Oba

Okada

2004

Marine Micropaleontology

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Paleoceanography for the last 195,000 years in the Solomon Sea (ODP Site 1109) by means of calcareous nannofossils

Cited by 6 publications

References 25 publications

Evolución paleoceanográfica del Oceáno Austral (sectores subantárticos del Atlántico y Pacífico) durante el Plioceno tardio-Pleistoceno

Evolución paleoceanográfica del Oceáno Austral (sectores subantárticos del Atlántico y Pacífico) durante el Plioceno tardio-Pleistoceno

Late Holocene shoreface evolution of the wave dominated Durban Bight, KwaZulu-Natal, South Africa: A mixed storm and current driven system

Late Quaternary paleoceanography deduced from coccolith assemblages in a piston core recovered off the central Japan coast

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