3
1O
T
T
T
10° +
~
§
>
XK
~
G
2
Q
g
=
x
S
3
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ww
G
MO
%
3
S
ww
Nw
o
$C
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8
Q
Q
2
10
-
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"
9s
-_—
0
4
Ss
107+
7
&
1
%
4
2
1O
3"
86
oF
7
31"
8
]
{
0.5
l
1.0
2
i
1.5
MEV
Fig. 7.
Gamma-ray spectra of depth increments of old soi
from the surface inch.
The origin of each spect
been arbitrarily separated from the preceding on
factor of ten to facilitate inspection of the fi
At