The Anaconda standard. [volume] (Anaconda, Mont.) 1889-1970, 1899-09-17

led the controverted ground as to It's
geological formations and the work.
ings. He was familiar with the sur
face lines and had examined all the UNI
derground workings save a few that ne
could not get into on account of their
condition.
Have you studied the formations
with a view to ascertaining the Sc
quence of their origin?" asked Mr.. Pat
terson.
Yes. SIR answered Mr. Bulky.
He was then asked to describe the
ground from that standpoint.
He said that the area involved by his
examinations is about 500 feet wide and
750 feet long, embraces the Rarus,
Jamestown and Pennsylvania claims,
and is part of the copper zone of Butte.
He said that the country rock is
granite, and that he had found a por-
phyry dyke running through it east
and west.
The porphyry dyke was formed by the
injection of melted rock matter from
below under pressure into the granite,
said the witness.
After the dyke was formed the whole
country was cracked and scanned by
west generally. Next, these assures
We're mineralized. After the formation
of the porphyry dyke and the east and
west assures and the naturalization of
the latter, two more assures were form
ed. These were the two cross assures.
The witness described the cross fis-
sureS as they appear, at the railroad
cut, ON the defendants apex map.
He described them as they appear at
points underground and said that the
east one has dip ofs45 degrees and the
west dip of AZ degrees, generally
speaking.
He said tina. the transverse assures
are quite distinct from the east and
west assures, but have a common char
acter between themselves.
On blackboard he drew an illustra
ton of a transverse section of north
drift, which runs through the east
fault. Then he said tina. the east wall
of the fault is solid rock, as shown in
the drift. To the west of this is a clay
slip, lying upon the sloping rock wall,
and it varies from an inch to a foot or
more in thickness. Next to this, going
west, is formation of broken matter
broken and rounded rock-filling the
whole width of the drift from. east to
west. This broken matter varies in
thickness at different places from two
feet to 10 feet.
Where such a condition as this is
found, motion along the crevice is sug-
gested," said the witness.
In answer to question he said that
the broken matter is in the fault crew
ice.
He next described grooves in the
walls of the faults that show past mo-
ton, according to his views.
He produced samples of the different
formations, and they were put in evil
dence. Some of these We're from the
clay selvage and showed grinding, and
some contained fragments of rocks
whose sharp edges had been rounded
I1,,. ~ i,,s, .,,l 1,aty eyit, If thGCa
were from the 450 level and 700 level.
A sample of clay selvage, containing
rounded pebbles and ore from the 700
level, was placed in evidence; also
similar sample from the 210 level
The broken, moved. dragged mate
rial was formed in the fault crevice
when the walls We're ground together
in the faulting, the witness said.
The movement was downward and to-
ward the north and west, as indicated
by the grooves in the walls of rock.
Portions of the veins had been drag
ged into the east fault crevlce, and the
movement had been to the north on the
west side of the fault.
The witness described bodies of por-
phyry found by him on different levels
of the ground in controversy.
A body of porphyry on the Rarus 100
level was described with the use of the
plan map of the level. A drift is run
west from the porphyry across both
faults into the ground to the west of
them. The drift shows no porphyry be-
tween the faults or west of them
The witness said that he takes 1t as
conclusive that the body found east of
the faults here is cut off at the west
end by the east fault.
The witness said it is fair to pre-
sumo that the bodies of porphyry found
on the different levels are portions of
the same dyke.
"why is it fair to presumed" asked
Because they are of the same COM
position, have the same direction and
thickness and are in the same vertical
plane" answered the witness.
From the bodies of porphyry found
on the various levels, and the relations
they bear to one another, the witness
holds the belief that continuous por-
phyry dyke once passed through the
controverted ground.
The witness next pointed out, on the
individual plan maps, bodies or por-
phyry on the $50, 300 and 500 levels that
he regards as corresponding parts of
this porphyry dyke.
Then he carried the connections be-
tween the bodies of porphyry from the
$50 level to the surface, having carried
them down to the 900 level previously.
He also described the porphyry on the
surface, going from the east end across
the ground to the west, and describing
the porphyry as shown in the different
surface openings.
Mr. Bulky explained that the drag
cling against each other of the walls of
rock after the intersection of the coun-
try by the faults, was produced by the
irregularity of the displacement. As
the ives. section moved north and the
east section south, the east end of the
first turned south and the west end
north, while the west end of the second
turned north and the east end south,
the ends or walls at the intersection
scraping together. The displacement Of
the west section was to the north
though it's east end scraped towards
the south.
The witness said that the fault crew
ices We're the planes of movement
There was a horizontal movement and
dislocation of the country. The extent
of the horizontal displacement was l9u
feet. The ground west of the faults
n {