10.1594/PANGAEA.603886
Esper, Oliver
Oliver
Esper
https://orcid.org/0000-0002-4342-3471
Zonneveld, Karin A F
Karin A F
Zonneveld
https://orcid.org/0000-0002-3390-1572
Höll, Christine
Christine
Höll
Karwath, Britta
Britta
Karwath
Schneider, Ralph R
Ralph R
Schneider
https://orcid.org/0000-0003-1453-9181
Vink, Annemiek
Annemiek
Vink
https://orcid.org/0000-0002-5178-9721
Weise-Ihlo, Ilka
Ilka
Weise-Ihlo
Willems, Helmut
Helmut
Willems
Abundance of calcareous dinoflagellates of sediment cores from the South Atlantic Ocean
PANGAEA
2000
Supplementary Publication Series of Datasets
Gravity corer (Kiel type)
M9/4
M12/1
M23/3
M34/1
Meteor (1986)
Geosciences, University of Bremen (GeoB)
South Atlantic in Late Quaternary: Reconstruction of Budget and Currents (SFB261)
2000
en
10.1007/s005310050297
urn:nbn:de:gbv:46-ep000103156
3 datasets
application/zip
Creative Commons Attribution 3.0 Unported
Despite the increasing interest in the South Atlantic Ocean as a key area of the heat exchange between the southern and the northern hemisphere, information about its palaeoceanographic conditions during transitions from glacial to interglacial stages, the so-called Terminations, are not well understood. Herein we attempt to increase this information by studying the calcareous dinoflagellate cysts and the shells of Thoracosphaera heimii (calcareous cysts) of five Late Quaternary South Atlantic Ocean cores. Extremely high accumulation rates of calcareous cysts at the Terminations might be due to a combined effect of increased cyst production and better preservation as result of calm, oligotrophic conditions in the upper water layers. Low relative abundance of Sphaerodinella albatrosiana compared with Sphaerodinella tuberosa in the Cape Basin may be the result of the relatively colder environmental conditions in this region compared with the equatorial Atlantic Ocean with high relative abundance of S. albatrosiana. Furthermore, the predominance of S. tuberosa during glacials and interglacials at the observed site of the western Atlantic Ocean reflects decreased salinity in the upper water layer.
For data of sediment core GeoB1105-4 see Höll et al. (1998) dataset: doi:10.1594/PANGAEA.55381, sediment core GeoB2204-2 see Höll et al. (1999) dataset: doi:10.1594/PANGAEA.55382
Supplement to: Esper, Oliver; Zonneveld, Karin A F; Höll, Christine; Karwath, Britta; Schneider, Ralph R; Vink, Annemiek; Weise-Ihlo, Ilka; Willems, Helmut (2000): Reconstruction of palaeoceanographic conditions in the South Atlantic Ocean at the last two Terminations based on calcareous dinoflagllate cysts. International Journal of Earth Sciences, 88(4), 680-693
-14.89666
17.5433333333333
-35.125
-3.815
Equatorial Atlantic
Brazil Basin
Cape Basin
Southern Cape Basin