302
Chemical Oceanography, 4th Edition
Solution Rate (mg cm
–2 yr
–1
)
0.0
0.1
0.2
0.3
0.4
Depth (m)
0
1000
2000
3000
4000
5000
6000
Pacific Ocean
(19°N–156°W)
Lysocline
for Calcite
Weight Loss in 79 Days (%)
0
25
50
75
100
0
1000
2000
3000
4000
5000
6000
Atlantic Ocean
(32°N–55°W)
Cocco. Foram. Reagent
P t e r o p o d s
Lysocline for
Aragonite
Lysocline for
Calcite
Calcite
Spheres
Figure 7.39
Depth profiles for the rates of solution of calcium carbonate in the Atlantic and Pacific Oceans.
CaCO 3 Content of Surface Sediments (%)
40
50
60
70
80
90
100
Depth (m)
0
1000
2000
3000
4000
Calcite Weight Loss (%) and
Broken Foraminiferal Tests (%)
0
4
8
12
16
20
24
28
32
Pacific Ocean
Figure 7.40
Depth profiles of the calcite loss and surface sediment concentration of CaCO 3 in the Pacific Ocean.