
70-11GPR Principles and Applications
An associated commercial application of sedimentary geology studies is the mapping of paleochan-
nels
fo
r
al
luvial
go
ld
an
d
di
amond
ex
ploration
. A co
mplete
un
derstanding
of th
e
pa
leouvial
en
viron-
ment
is cr
itical
to re
source
ex
ploration
an
d
pr
oject
ec
onomics
. Ex
ploration
is no
rmally
co
nducted
usi
ng
dr
ill
ho
les
an
d
tr
enching,
wi
th
se
ismic
or EM ge
ophysical
su
rveying
oc
casionally
em
ployed
. GP
R
is
in
creasingly
be
ing
tr
ialled
in su
itable
en
vironments
wh
ere
th
e
in
-lled
se
diments
co
nsist
of co
urse-
grained sands and gravels in order to map the ore-rich basal gravels. Figure 70.8 shows an example of a
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