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  4. Late Quaternary pelagic aragonite preservation in the Arabian Sea and its paleoceanographic implications
 
Zitierlink URN
https://nbn-resolving.de/urn:nbn:de:gbv:46-diss000102782

Late Quaternary pelagic aragonite preservation in the Arabian Sea and its paleoceanographic implications

Veröffentlichungsdatum
2005-12-21
Autoren
Klöcker, Ralph  
Betreuer
Henrich, Rüdiger  
Gutachter
Ganssen, Gerald  
Zusammenfassung
In the course of the Quaternary the carbon dioxide concentrations of the atmosphere showed large fluctuations related to the oceanic carbon cycle and carbonate system. The production, accumulation, and dissolution of pelagic aragonite constitutes a considerable part of the oceanic carbonate system. Variations in water mass properties, atmospheric and oceanic circulation, which lead to changes in bioproductivity in the upwelling areas influence the preservation of aragonite and therefore the preservation of pteropod shells. This project is concerned with Late Quaternary preservation of pteropods in sediments of the Arabian Sea. To this purpose 15 surface sediment samples and two high resolution sediment cores from the Arabian Sea have been analysed by means of the pteropod shell preservation index LDX (Limacina inflata dissolution index, Gerhard and Henrich, 2001) in respect to the aragonite preservation state. One objective was to test and apply the newly developed LDX on sediments from the Arabian Sea and to trace spatial and temporal variations in pteropod preservation.
Schlagwörter
Arabian sea

; 

pteropods

; 

Limacina inflata

; 

carbonate preservation

; 

aragonite dissolution

; 

Late Quaternary

; 

Somali basin
Institution
Universität Bremen  
Fachbereich
Fachbereich 05: Geowissenschaften (FB 05)  
Dokumenttyp
Dissertation
Zweitveröffentlichung
Nein
Sprache
Englisch
Dateien
Lade...
Vorschaubild
Name

00010278.pdf

Size

6.98 MB

Format

Adobe PDF

Checksum

(MD5):502f97bfa9607ede209d9d32d5acaccb

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