The Powder River County examiner and the Broadus independent. [volume] (Broadus, Mont.) 1919-1935, 1921-01-21
GEOLOGICAL REPORT
ON OIL PROBABILITY

a depth Of 453 feet. In the escarp-
ment east OF the Little Big Horn the
Fox Aills sandstone is either absent or
stones that have been previously re-
ferred to as marking the base Of the
Lance formation.
Information as to the character Of
the underlying formation in the west.
ern part Of the field is afforded by the
accompanying abridged we'll record:
Record Of Well M. I. Abaroka OH
"Record Of well No. l. Absaroka Oil
Gas Co, Sec. 16. T. s., r. 40 E..
montana: Feet.
Coal (Dietz No. bed CT
Sheridan coal >ficld) .. 155-- aOo
sha!e 49, s1sM M rs rs
Coal and water (Dietz No.
ueo) 25S-- 273
sand. clay and lime shells. $40 sS0 sSo
Coal (Dietz No. 3 bed) 360- sSS
FIRE clay. white ........ 800 3SS
sandstone and clay 39S- KS
coal (Monarch bed) ... 553- SS7
Gay ana shale ..... 57-. c2o
Coal In three benches, total
thickness is feet. with wa
shala 'tair"e. thi,, ned) ......... Gao 6S5
shells, and thin ccals cf51,cs
Sandstone with water 11G:,--i399
Coal and shale; lower cool
bench - feet thick 1osO,oen
Shale, gray. with thin Goals
ana dry sandstones in low
water sands. gray and blue '0V-
e snaIe ............ 1S0o,o4a IN
Shale, sandy ana dry sands. isV0--asa9" isstV0-isa"
Smell. hard and gas oa30-o5S.
Sna,e. san,s Drown and thin water
Water sands and thin shaiics 57sS-saSSaa
'i'ie' brown and gray slate 324O-34SS
For. the first 75o feet this well pen
ctrated Fort Union strata. The sands
which eitherre p resent the Fox Hill
cr constitute the base of the Lance
formation We're encountered between
1880 and 1910 feet. Below them come $
the. Pierre shale, the upper part Of
which is equivalent to the Bearpaw
between :.7s5 and 1920 feet are
roughly equivalent to the Par.iman
sandstone and approximately in the
formation.
East of Pinitle there is. at least in
places, a heavy sandstone in the Pierre
snail snale few hundred feet below it's TOP.
djvs ine gas an,n, ontained ne, at Baker and Glen-
l.gVo feet below the tcp OF the Pierre.
Wnlch presumably represent the park >
,rhn mhn,hau hsandstone: but it is not known
MnIerIfa "mIemfa Or or not sands at this horizon
! ley. '""er f.Ver VAL
western margins of the Wolf Noun
tain syncline the sands Of the Gel oratlo
and older formations. which yield oil
near Newcastle. lie too deep to be
reached by ordinary drilling opera
tions.
..r,. n,nn.ing anticline that va, nH' ~, ~
~ Starved TO Death Creek t no Sow,
l.sb,m, urcbably continues 70, 7cma
distance southeast od.ast;nnablv OF .nu lndi-
IT'S b'ih hN nertheasttr!y dip "es.fNS"
-, the southeast corner OF !, %, ~
Il. ii f.. and ny the ssst so"',Io Of Rosebud
liver, rnr The Bull Mountain Seasyht.iis ,s xis
a,so extends southeastward. It's ANS
crossing the fsliows,"dne farn and eontinning i,M
tSsSse Waee ana towara nes castle % Rock, probably
| ..w.im~iow scuthward and passing hea'
sana mnms'AIe Deer, The swnig in the a0utcrop
Of the Parkman sanasto,tt; ;,,ina, nos.
near the northeast corner of :. ! -,
| r "a p. A second nose exteIoi.s
eastward from the Prycr ,a mountain hatne!lr up,
strMcturai elevations that are very
small and probably OF no Importance
in relation to o,l a, or q gas ,,1ol< n1s pan and
Sarpy creeks. Just east OF Rcsebus
river at Lee there seems to be smai
anticline oriented in northeasteriH
!
Is miles the strata are essentially iiaI
but the Absaroka Oil 4 Gas Co.'S wei
is on long. narrow hntlci'ne wnici
strikes e about a. o. es degrees onSf ast 1T
and degrees northwest. From this
point to sheridan the dips are low
though variable and probably indicate
| the existence OF an eastward plungins
north of Dietz. In the Tongue river
valley above Rirney the dips ar,
below nirney: on the south side Of tn.
river. there is a 10 wanticlire trend.
ing northeast From Ashland north
ward on Tongue river the beds ar,
creek. a few miles southwest OF Miz,
pah postoffice. the northeny dip tha'
prevails from Niznah TO Terry, fiatiens
erors ,s GGe,rthaps reversed Sishly nt, for
to occupy a local synclne. and mino,
variations in dip may be noted in the
Mzpah creek valley. However. cas-
cline whose limbs probably dip .ne de
gree or less. This anticline seems t.
extend from the Butte creek vale,
point about four miles above row
northwest slope OF the major Blacl
Hills pplift. There also. seems tc, b,
from Boyes to the mouth of each,
creek. 10 miles above Broadus. Thi,
syn,cnne, h,ch In conjunction with the on,
river above Broadus. produces tn,
Broadus artesian basin. Between Pi
nieie and Ridge the formations dli,
Il seems possible that a small anti
GnnaI nose extends westward from tn,
Heck HILLS uplift past Ridge and u,
the valley CT Bowers creek.
"Of the several structural elevations
mentioned above the three which NOR
distinctly invite further investigation
are the anticlinal noses near Ridge
northeast of Hardin. and west
ttcularly promising"