The Carbon County news. [volume] (Red Lodge, Mont.) 1924-1931, 1930-08-21

dence point to the fact that we are
here dealing with the very edge Of
the overthrust mass which COM
prlses the present mountains and
rlateaus of the Beartooth Range.
This mass of very old rocks was
thrust. upward and outward over
the relatively younger rocks of the
/ Fort Union coal measures. The
results of this seasons work shows
thai the force which produced the
overthrusting was unequal in diff
ferent directions and as result
oestain portions of the mountain
front have moved outward farther
tnan others. The minor structures
resulting from the thrust move
laent are best shown in the strata
Of limestone which extend along
! the front of the mountains in a
bent and broken line. These are
IT. some places vertical, in others
turned almost completely over and
in others are slightly tilted. The
limestones are thus good indicators
of the intensity and direction of
mountain building movements in
this vicinity.
"A new, Interesting discovery
by the research group was that of
several intrusions of igneous rocks
If the thrust zone. Several small
bodies of porphyry, probably of
Tertiary age, were found intruded
into the limestone series. The dikes
of igneous rock intruding the coal
measures have been known for a
long time and are possibly of the
same age as the porphyrys, but no
connection has yet been establish
ed. The igneous rocks which Were
originally forced up into place in
molten condition and now form the
main mass of the Beartooth range,
are much older than the fault zone
porphyrys and in the vicinity of
Red Lodge are granite and diorite
for the most part.
"A few ore deposits have been
studied by the party, principally
under the direction of DR.. Samp-
son. The chromite deposits have
received the most attention and
while no conclusions have been
reached as to the present CONNER
clal value of the deposits they are
shown to be of much scientific in
terest and to resemble certain
South African deposits which were
previously thought to be unique.
The genetic relation of all the ore
deposits to the igneous rocks of
the region is very evident and a
future study of the latter may well
point out favorable areas for pros
pecting.
1T is hoped that a continued
study of the front range structure
and of the igneous rocks and ore
deposits of the Beartooth region
will enable US to make still more
far reaching conclusions as to the
geologic history and the mechanics
of mountain building in the region.
n. ?. Official Speaks on Work
Mr.. NJ. NJ. Goodsell, of the Nor
thern Pacific, stated in his talk
that the Northern Pacific was in
strumental in research work, and
told of being called to Princeton
! university to attend conference
with DR.. Thorn, DR.. Field and 9TH
ers. They unfolded their plans in
regard to carrying on research
Work in regions in the Rocky
mountains and the neighborhood
Of Thermopolis, Wyo., the center
of the Pryor mountains and other
districts. Mr.. Goodsell told them
about the Red Lodge district and
its scenic attractions. DR.. Thorn,
who for several years was the
head of the oil and gas division OF
the United States geological sur
vey, knew of this region and plans
were Immediately made to estab-
lish a summer school here. The
Northern Pacific went into the
| proposition for throja years, he
said. Goodsell stated that credit
was due to DR.. Siegfriedt for his
discoveries in the Eagle mine few
years ago, which was indirectly
the cause Of the party locating al
Red Lodge. He commented upor
the chromite deposits and the other
mineral resources of Carbon coun.
| ty, which are Of economic value tc
| both the state and nation. He as.
| sured the group that they coulc
count on the cooperation of the
| Northern Pacific in years to come
to carry out the geographical re-
search work in the Beartooth re.
| gion.
School of Mines Official Speaks
President Francis Andr "
Thomson of the State School o.
Mines, spoke briefly on the ma
tural resources and development o.
the state. He said in part.
america has been blessed will
an abundance of natural resources
| the development and utilization o.
| L. L L. L IL IL L =