350
70
Delamar Mine ~
60
50
~
Dewey Mine
~ 40
C)
::l
- C) 30
::I:
-5 20
I10
o
o
2
4
6
8
10
12
Kilometers downstream of Silver City
Fig. 10. Total Hg concentrations in jordan Creek sediments, southwestern Idaho
... Silver City
5
C) 4
::c
Delamar Mine
S 0
- 3
- 0
Q)
C)
ro 2
- r::
Q)
0
....
Q)
a..
0
0
2
4
6
8
10
12
Kilometers downstream of Silver City
P.j. Lechler
14
14
Fig. 11. Proportion of total Hg which is present in an exchangeable form in jordan Creek sediments