Zn/Sr record of the Last Interglacial Transition in South Atlantic Ocean sediments
| Cobertura |
MEDIAN LATITUDE: -50.057500 * MEDIAN LONGITUDE: 2.278600 * SOUTH-BOUND LATITUDE: -54.790000 * WEST-BOUND LONGITUDE: -4.930000 * NORTH-BOUND LATITUDE: -45.090000 * EAST-BOUND LONGITUDE: 9.150000 * DATE/TIME START: 1970-12-14T00:00:00 * DATE/TIME END: 1971-01-01T00:00:00 |
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| Data(s) |
17/07/2000
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| Resumo |
We examined the zinc content of diatom frustules as an indicator of past changes in surface seawater Zn2+ concentration. Zn/Si data of samples from three cores located in the South Atlantic sector of the Southern Ocean spanning the last interglacial-glacial transition are presented. Changes in the Zn/Si record are linked to changes in the surface water Zn2+ concentration. The source of variation in Zn2+ concentration appears to be via changes in deep water upwelling and circulation. We rule out changes in phytoplankton productivity and aeolian dust input as a source of variation in the Zn/Si record. Likewise, the Zn/Si data are not linked to shifts in the diatom species composition of the sediment or sediment preservation effects. The Zn/Si results presented do not support the zinc hypothesis. There is no link between the uptake of CO2 by phytoplankton, as inferred from the d13C record, and the Zn/Si record. |
| Formato |
application/zip, 2 datasets |
| Identificador |
https://doi.pangaea.de/10.1594/PANGAEA.848245 doi:10.1594/PANGAEA.848245 |
| Idioma(s) |
en |
| Publicador |
PANGAEA |
| Direitos |
CC-BY: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted |
| Fonte |
Supplement to: Ellwood, Michael J; Hunter, Keith A (2000): Variations in the Zn/Si record over the Last Interglacial Glacial Transition. Paleoceanography, 15(5), 506-514, doi:10.1029/1999PA000470 |
| Palavras-Chave | #Al; Aluminium; Depth; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; Depth bot; Depth top; Event; Fe; Ge/Si; Germanium/Silicon ration; ICP-MS, Inductively coupled plasma - mass spectrometry; Iron; Variations in the measurement for aliquots taken during hours 2, 3, and 5 during the alkaline dissolution process; Zinc; Zinc/Silicon ratio; Zinc/Silicon ratio, standard deviation; Zn; Zn/Si; Zn/Si std dev |
| Tipo |
Dataset |
