136
Baumann et al.
GeoB 1028-5
- - SST COC)
14
28
Isotope stage
16
18
20
22
24
26
2
3
50
4
5
-_-.>i"
150
-6
Gephyrocaps:z oceanica
1"1" iii 111111111111
j " I I i Ii I " I I i Ii I Ii I I
o 2 4 6
8 10
o 2 4 6 8 10
Coccoliths/g sedimen t (* 109)
SST (present mean)
Cocco liths/g sediment (* 109)
--+Fig. 13. Oxygen isotope- and alkenone-derived SSTs for core GeoB 1028 over the last 200 kyrs (modified from
Miiller et al. 1997). Isotopic SST was calculated applying the paleotemperature equation of Epstein et al. (1953)
using a tolerance in salinity of 1 0/00. SST from the Uk'" were calculated using published relationships for Emiliania
huxleyi (solid curve, Uk'" =O.034T +0.039; Prahl et al. 1988) and Gephyrocapsa oceanica (dashed curve, Uk'" =O.049T0.52; Volkmanetal. 1995).
Baumann et al.
GeoB 1028-5
- - SST COC)
14
28
Isotope stage
16
18
20
22
24
26
2
3
50
4
5
-_-.>i"
150
-6
Gephyrocaps:z oceanica
1"1" iii 111111111111
j " I I i Ii I " I I i Ii I Ii I I
o 2 4 6
8 10
o 2 4 6 8 10
Coccoliths/g sedimen t (* 109)
SST (present mean)
Cocco liths/g sediment (* 109)
--+Fig. 13. Oxygen isotope- and alkenone-derived SSTs for core GeoB 1028 over the last 200 kyrs (modified from
Miiller et al. 1997). Isotopic SST was calculated applying the paleotemperature equation of Epstein et al. (1953)
using a tolerance in salinity of 1 0/00. SST from the Uk'" were calculated using published relationships for Emiliania
huxleyi (solid curve, Uk'" =O.034T +0.039; Prahl et al. 1988) and Gephyrocapsa oceanica (dashed curve, Uk'" =O.049T0.52; Volkmanetal. 1995).