The daily morning oasis., 1919-09-20
TEXAS GREAT OIL.

CONTINUED from Page Three)
that are penetrated by wells in the
Desdemona field, crop out IN San
Saba, the third county south from
Eastland County; and competent
geologists have mapped and identified
the upturmed edges of all the strata
living between the Desdemona- field
and the San Saba where they find as
phalt as termed usually, called how
ever "Chapopote," the geological
name of the residue from evaporated
oil Of the KIN, that is drawn from the
OF. bearing strata of this field. Then
results OF
Local Erosion
Have cut down and through some
of everything strata, leaving exposed
in hillsides the edges so they may be
observed and studied, as were their
untitled edges farther south, and
measurement, comparison, contrast
caluculation and computation, with
regard to those exposed edges, give
definite information of the geologi-
cal horizon in which the surface is a
part. and what other horizons (as
strata are sometimes cal'ed) lie be-
low, and the distance to bore to get
the stratum of oil sands that is at
the surface in San Saba County, with
it's showing of asphalt. That COM
putation is complicated somewhat
with discoverable local seismic dis
turbance discussed under the next
subhead; but that has been worked
out and determination made that oil
sands of the Bend Series in the Lo-
wer Pennsylvania Era are to be
penetrated in the Desdemon Field
by boring to depths approximating
5000 feet, which has been demonstrat
ed by numerous wells that have come
in already at those approximate
depths, with others coming in almost
daily.
Then whether simultaneously with
the movements described or in anoth-
er age. makes no difference to the
purposes of this article, as the Earth
shrank with colling, as an apple
shrinks and corrugates with age
when left hanging on tree, there
occurred foldings of straca with
Great Upthrusts
OF older and lower form ations,
which bent and raised all the strata
above them causing great domes to
rise upon the surface. Sometimes in
such movements the upthrust of older
rocks comes clear through to the sur
face, or erosion exposes it afterward.
Where that has not occurred, or where
erosion has not cut superimposed
strata down to the apex Of the up
heaval, the uncut formations persist
in dome structure all the way down,
and the stratum of oil sands is dome
like also. That has been taken into
account also in computing depth in
these fields.
Erosion through most recent times
has removed in part the tops of the
domes described, but the missing
parts the geologist visualizes and de-
scribes by taking the anticlinal pitch
es of corresponding strata facing
across a valley or depression, and
carrying their lines on curves to the
center of the imaginary parabola
above. The forces that
Thrust Up The DOmes
Made in the strata great cross
folds, extending northeasterly and
southeasterly across the main or
great original monocline described,
with their edges exposed in the coun-
ties southwark.
Now, then, as described hereinbe-
fore, the great deposits of organic
remains imprisoned in the Bend Sc
ries of rocks, generated gas and oil,
natural tendencies of which elements
are to arise along the lines of the
least resistance, which with impervi-
Gus formations both above and below
would be to follow the uptilted
stratum in which generated; and with
an edge exposed, as in San Saba
County, they would eventually all
work out out and be lost. That is
what has occurred in some oil bearing
sands. That some of those sub
stances have worked out in San Saba
county is manifest in discovery of |
asphalt where the oil sands crop out
upon the surface. Asphalt is the |
form assumed by one variety of crude
petroleum as it dries and solidifes up
on exposure to air. But in the