Mesa free press., 1898-06-10
BULL DOG NINE.

Il
from those at the Mammoth. There
/! are here distinct and massive CROP
pings of quartz veins in close associ-
alton with beds of blue limestone; old
calaeozoic beds caught up by, and
penetrated with. the intrusive granite
and altered. CHANGED, and pene teate ed
also 10y quartz. The vein9at the mill
has been worked TO depth OF 96S W
100 feet and is reputed to have yield
ed some $4,000. 1t is stored to
the surface from the 100 foot level
up. There is also cross-cut of l3O
feet long over to the west to reach a
portion of the two veins thrown 10
the west along faulting plane which
appears to be vertical. A fine mill of
ten stamps with two large size Free
Vanners has been erected here but is
now idle. il has fine hni.cr and
Corllss engine in good order.
MABEL ANN
Beyond the Bull Dog northwafd a
similar quartz vein, and possibly an
extension of the Bull Dog, crops out
boldly and has been somewhat worked.
The vein shows thickness of from
four to six feet and carries consider
able lime spar and has inclusions or
horses of the intrusive granite. The
course of this vein is nearly north
and south and the dip is west.
HILLS SOUTH OF MESA.
From Mesa southwark the country
is open to the ella in some directions
and in others is interrupted by low
ranges and huttes rising isolated above
the plain, like islands from an ocean.
Gne of these buttes on the rightsbank
or north side of the Gila and in the
Indian reservation twenty miles or
more south of Mesa was visited and
was found 10 be made up of the an
cient mica slate formationv-the Ari
zonian-the equivalent of the Huron
ian. The states are much crinkled
and contorted together with pnmer.
Gus thin bedded layers Of quar'z. The
general direction of the lamination is
north ten degrees west
The relics of an ancient canal Just
north of this butte and evidences OF
aboriginal dwellings, show that the
place formerly had large population.
The direction of the bedding or
lSminations of the mica slate rocks
is not in any way favorable to artes-
ian conditions, tr,nding as il does
nearly at right angles with the gem
eral descent OF the valley, unless we
may regard the formation as lpdica-
tive of rugged underground topog 4
raphy, rising in underground ridges
across the valley tending to throw
any underground flow towards the
surface.
ABSENCE OF TRUE ARTEs1AS coNDI-
s TIoNs.
In the Salt and Gila valleys the
typical ideal Artesian conditions can
not be said to exist. even it stratified
formations like those essential to Ar
tesian water were to be fon ad on the
fanks of the mountains on both sides
of the great valley (as they arc not).
The essential abundant precipitation
of water on the higher SUBMITS, by
which the strata would receive sup
ply of water under pressure, does not
not exist. The valley is not bordercd
right and left by snow clad mountains
It may be said that water supply of
this nature is much further removed.
1t certainly is and is found at the
sources of both the .Gi..a and the Salt.
hut this supply is so far to the east
ward and on the other side of ranges
of mountains with strati6ed forma-
tions generally dipping eastward or
away from the westward slope that it
cannot be assumed to flow continu ;
ously through the strata to the Gila
valley; hence, We do not have the
stratiform conditions essential to a
true Artesian flow. But we do have