68 OIL FIELDS OF TEXAS-LOUISIANA COASTAL PLAIN, [bull. 213. 
GEOLOGY OF THE OIL POOLS. 
ENUMERATION OF OIL DISTRICTS. 
The foregoing account of the Gulf Coastal Plain lias been given in 
some detail in order that the geologic environment of the oil pools 
might he readily understood. The latter, so far as they are now 
known, occupy an extremely small fraction of the region described. 
Excepting the Spindletop pool, their limits are in no case defined with 
any degree of accuracy. It is probable that the actually productive 
territory will be confined to small areas similar to the Spindletop pool, 
which may vary in extent from 200 to 2,000 acres. 
The districts which at present give promise of productiveness, and 
which will be described in the order given, are the following: 
In Texas: 
1. 
Beaumont district, including 
Spindletop. 
2. 
Port Arthur-Sabine Pass district. 
3. 
Sour Lake district. 
4. 
Saratoga district. 
5. 
Dayton district. 
('). 
High Island district. 
7. 
Columbia district. 
8. 
Velasco district. 
In Louisiana: 
9 
. Jennings district. 
10 
. Anse la Butte district. 
11 
. Sulphur district. 
12 
. Vinton district. 
13 
. Hackberry Island district. 
14 
. Minor Louisiana localities. 
It is not implied thai the districts mentioned above include all the 
productive territory in the Texas-Louisiana field. It will readily be 
understood from the geologic conditions already described that pre- 
diction in this field is exceptionally hazardous. On another page the 
most favorable regions for prospecting are indicated, but it is entirely 
within the range of possibility that elsewhere than in these apparently 
favorable localities oil may be found in commercial quantities. All 
that can be said with regard to the greater part of this field is that 
no evidence of the existence of such deposits has yet appeared, and the 
only way in which their presence or absence can be definitely deter- 
mined is by systematic and expensive drilling. 
BEAUMONT DISTRICT. 
This district includes the small area which is actually productive, 
generally known as Spindletop, and a much larger surrounding area 
in which active prospecting has been going on for more than a year, 
but which has not yet developed any paying wells. The Spindletop 
pool will first be described and then the surrounding unproductive 
portion of the district. 
