CACTUS CRATER
ann
XC-1
“a
Keps ¥
fo2£8s
f
f
— eS ono
TG zt} Kees ¥
j
=
worn dt!”
50
_ a oe ene qe ee Gee
¥T
"100
=~ ares wee
ee ee
50 feet
SO feet
150
Viewed - Looking Nosthesst
7 —————— Past-chot Crates
———— ~ True Crater (?)
---=——— Solution Unconformity
FIGURE 5 Well logs of gamma radiation (expressed as K cps) from
dritl holes XC-? and XC-2 beneath Cactus Crater (Ristvet 1980).
The true crater may be defined by polnts. where Increased activities
occur beneath the fallback materfal In the crater.