Calcareous dionoflagellate cysts from surface sediments ...

In oceanic regions with high primary production, such as the Arabian Sea, the primary signals of proxies are often altered by diagenetic processes. The present study aims at assessing the effects of early diagenesis on calcareous dinoflagellate cysts, which represent a relatively new tool for reconstructing the paleoenvironmental conditions within the photic zone. For this purpose, surface sediment samples from within and below the oxygen minimum zone (OMZ) of the northeastern and southwestern Arabian Sea have been analysed quantitatively for their calcareous dinoflagellate cyst content. The c... Mehr ...

Verfasser: Wendler, Ines
Zonneveld, Karin A F
Willems, Helmut
Dokumenttyp: Dataset
Erscheinungsdatum: 2002
Verlag/Hrsg.: PANGAEA
Schlagwörter: Event label / Latitude of event / Longitude of event / Elevation of event / DEPTH / sediment/rock / Thoracosphaera heimii / per unit sediment mass / Leonella granifera / Calciodinellum albatrosianum / Calciodinellum sp. / Calciodinellum operosum / Cysts / spiny / Box corer / Counting / dinoflagellate cysts / NIOP-C1 / NIOP-C2 / NIOP-D2 / NIOP-D3 / Tyro / Geosciences / University of Bremen GeoB / Netherlands Indian Ocean Programme NIOP
Sprache: Englisch
Permalink: https://search.fid-benelux.de/Record/base-29159608
Datenquelle: BASE; Originalkatalog
Powered By: BASE
Link(s) : https://dx.doi.org/10.1594/pangaea.68679

In oceanic regions with high primary production, such as the Arabian Sea, the primary signals of proxies are often altered by diagenetic processes. The present study aims at assessing the effects of early diagenesis on calcareous dinoflagellate cysts, which represent a relatively new tool for reconstructing the paleoenvironmental conditions within the photic zone. For this purpose, surface sediment samples from within and below the oxygen minimum zone (OMZ) of the northeastern and southwestern Arabian Sea have been analysed quantitatively for their calcareous dinoflagellate cyst content. The calculated cyst accumulation rates (ARs), the relative abundances and cyst fragmentation values were compared to bottom water oxygen (BWO) content and ARs of organic carbon at the sample positions. Different patterns were found in the northeastern and southwestern part of the Arabian Sea. In the SW, no relationship between cyst ARs and BWO is distinguishable, and the distribution of cyst ARs is thought to largely reflect ... : Supplement to: Wendler, Ines; Zonneveld, Karin A F; Willems, Helmut (2002): Oxygen availability effects on early diagenetic clacite dissolution in the Arabian Sea as inferred from calcareous dinoflagellate cysts. Global and Planetary Change, 34(3-4), 219-239 ...