123
Minor Elements in Seawater
K Y = Y C / Y A
(3.13)
where Y A is the rate of transport of material from crustal rock, and Y C is the rate of transport from the oceanic reservoir. The value of Y A has been corrected for recycled sea spray.
The logarithm of the mean residence time was found to be a linear fraction of the log of
the partition coefficient:
log τ = 0.53 log K Y + 6.15
(3.14)
Biosphere
Atmosphere
B
Ocean
E
C
D
F
New Rocks
G
J
H
I
K
Old Rocks
A. Ocean to Atmosphere
G. Suspended Load from New Rocks
B. Atmosphere to Streams
H. Suspended Load from Old Rocks
C. Total Suspended Load of Streams
I. Flux from New Rocks to Old Rocks
D. Total Sediment Flux
J. Dissolved Load from New Rocks
E. Dissolved Load of Streams
K. Dissolved Load from Old Rocks
F. Total Flux Dissolved from Rocks
New Rocks
4800 × 10
20 g of
elements (150 × 10 6 y)
Biosphere
0.01 × 10
20 gC Living
0.04 × 10 20 gC Dead
Old Rocks
Atmosphere
0.065 × 10
20 g C
as CO 2
Ocean
500 × 10
20 g of
elements
8450 × 10
20 g of
elements (663 × 106 y)
A
Figure 3.32
The cycle of elements on the earth.