9.2 Chemical Denudation
o
km
,
TOTAL DISSOLVED
CONSTITUENTS
C
140
120
100
(mgli)
"
DRY SEASON
" ' ( WET SEASON
, ,
\
MAIN STREAM
OF AMAZON R.
ELEVATED SHIELD
LOW - LYING
SHIELD
431
CONCENTRA TlON OF TOS IN mg/l
10
100
1000
10000
LOWLAND SHIELD
_ NEGIIO AIVER
C"MP'HAc;: .... TING ..
b
LOWLAND SEDIMENTS
ELEVATEO SHIELD
ANDEAN DRAINAGES
10
100
1000
10000
DENUDATION RATE miMe
CLAYST. + GYPSUM
_
SAN OST . ± CARB . i'
d
80
TDS (g /l)
60
40
20
o
,
"
0
,
"- "- .... '/
•
-. ..... _TRIBUT ARIES
0\
•
0
o
•
• .,
00 "WET SEASON
•••
•
km
3000
2000
1000
A1NOES OIST ANCE FROM OCEAN
o
I
OCEAN
400
200
o
e
RIVER
MAIN