48 OIL FIELDS OF TEXAS-LOUISIANA COASTAL PLAIN, [bull. 312. 
The log of the J. M. Guffey Petroleum Company's well is not avail- 
able. 
The section shown in the Galveston well has already been published 
in several places/* so need not be repeated here except to show the 
ages assigned to the various deposits. According to Harris 6 the 
deposits found appear to be as follows: 
Section of Galveston well. 
Feet. 
Pleistocene 46 to 458 
Doubtful 458tol,510 
Upper Tertiary -. 1,510 to 2,158 
Miocene (Upper) 2,158 to 2,920 
These have been partially correlated with the deposits found in the 
well at the State penitentiary at Ihintsville. 
DETAILED SECTIONS IN VICINITY OF NECHES AND SABINE RIVERS. 
Eastward from the Trinity the general features of the country are 
very similar to those of the seel ion last described, west of that river. 
The topography is that of a level plain, mostly prairie, but timbered 
along its northern margin and swampy along the Gulf coast. 
It is in this eastern division that the so-called hills, or more prop- 
erly prairie swells, which play so important a role in oil prospecting, 
are most extensively developed. Near the coast are High Island and 
Big Hill, in Jefferson County, while farther inland are the present oil- 
producing regions of Spindletop, Sour Lake, and Saratoga. In addi- 
tion to these there are several smaller and apparently less developed 
elevations, of which the more important is Fairchild Hill, situated 
about 4 miles west of Sour Lake station. It rises with considerable 
abruptness to an elevation of 25 to 30 feet above the general level of 
the country and covers approximately 50 acres. Small ponds or 
depresssions holding water are scattered over the top, and more or 
less gas appears in the neighborhood of these depressions. About 2 
miles southwest of Fairchild Hill lies another hill of about the same 
extent and elevation. This is of a somewhat irregularly oval form 
and is nearly covered by a single pond. The crest of the hill forms 
a natural embankment, and confines the water, which covers 2 or 3 
acres. Gas also occurs in the neighborhood of this pond. 
In Orange County occur several similar though smaller elevations, 
but these, as well as some others in other portions of the Coastal Plain, 
are not named. 
In the Louisiana region the most important elevations are Hack- 
berr}^ Island, in Cameron Parish, Vinton and Sulphur mine, in Cal- 
casieu Parish. Besides these are a number of other smaller and less 
noticeable elevations. 
« Fourth Ann. Rept. Geol. Survey Texas, 1893, p. 89 et seq. 
&Idem, p. 118 
