440
S. Wakeham
360.-----------------------------------------------------.
N. Gulf of Mexico
320
280
I
8~
Q. 240
200
160 I
i I
3
I 4
Sa
5b
5c?
o
W
40
i
60
80
100
Age (ka B.P.)
Fig. 19.15. Atmospheric Pco, over the last 100 ka derived from ol3C of alkenones extracted from
sediments of the Pigmy Basin, compared to the record from the Vostok ice core and a record that would
be obtained from bulk OC. Redrawn from Jasper and Hayes (1990)
400
350
E 300
' !Q
,a.
8
Q. 250
200
Estimated surface water Peo
at Site 1016-3,Angola Basin·
Vostoc ice core Peo
+70atm
- - 6 - after Rau et al. (1991)
------ after Popp et al. (1989)
150+1--.--.-'r-.--.--.--r--r-.--.--.--.--.--r-'--.-~--r--r-.
o
50
100
Age (ka)
150
200
Fig. 19.16. Estimated surface water Pco, derived from a core from the Angola Basin. The record obtained from the Vostok ice core is shown for comparison and has been adjusted by the average glacial
sediment-ice difference of 70 l1atm to facilitate comparison. This presentation emphasizes the disequilibrium during the period between 60 and 130 ka. Redrawn from Miiller et al. (1998)
S. Wakeham
360.-----------------------------------------------------.
N. Gulf of Mexico
320
280
I
8~
Q. 240
200
160 I
i I
3
I 4
Sa
5b
5c?
o
W
40
i
60
80
100
Age (ka B.P.)
Fig. 19.15. Atmospheric Pco, over the last 100 ka derived from ol3C of alkenones extracted from
sediments of the Pigmy Basin, compared to the record from the Vostok ice core and a record that would
be obtained from bulk OC. Redrawn from Jasper and Hayes (1990)
400
350
E 300
' !Q
,a.
8
Q. 250
200
Estimated surface water Peo
at Site 1016-3,Angola Basin·
Vostoc ice core Peo
+70atm
- - 6 - after Rau et al. (1991)
------ after Popp et al. (1989)
150+1--.--.-'r-.--.--.--r--r-.--.--.--.--.--r-'--.-~--r--r-.
o
50
100
Age (ka)
150
200
Fig. 19.16. Estimated surface water Pco, derived from a core from the Angola Basin. The record obtained from the Vostok ice core is shown for comparison and has been adjusted by the average glacial
sediment-ice difference of 70 l1atm to facilitate comparison. This presentation emphasizes the disequilibrium during the period between 60 and 130 ka. Redrawn from Miiller et al. (1998)