LOS ANGELES DISTRICT: SALT LAKE FIELD. 191 
Typical well log near the Jlexure, on its northwestern flank, Salt Lake field— Continued. 
“Adobe;” layer of soft clayey shale at 960 feet. 
“Adobe”. 
“Adobe’ and small streaks of white sand; some water. 
“Adobe;” some clayey shale and sand; “shell” at 1,040 feet. .. 
Fair showing of oil in “adobe;” small “shell” at 1,075 feet. 
Sandy shale; good showing of oil between 1,070 and 1,080 feet. 
Shale; much gas; oil still coming in.. 
Sand and shale; lots of oil. 
Shale carrying much oil. 
Shale and oil sand mixed; much gas and oil. 
Same formation; gas and oil. 
Broken shale formation; considerable oil.[. 
Shale and oil sand; considerable oil. 
Shale; gas increasing; oil. 
Shale and “adobe;” lots of oil. 
Shale; considerable oil.J” 
Passed through pulverized slate from 1,310 to 1,315 feet, light oil showing under this . . 
Shale; oil still coming in. 
Gray shale; gas strong. 
Shale containing oil; pocket of gas at 1,340 feet. 
Shale. 
“Adobe;” considerable gas. 
“Adobe;” oil coming up on bit; gas flow heavy; well filled for 400 feet with mud,water, 
and oil. 
Big flow of gas; filled pipe 140 feet; good showing of oil. 
Light-colored shale; no mud and no oil. 
Light oil; large amount of gas; well filling rapidly with oil within 100 feet of top;- large 
“shell” at 1,495 feet, under this the heavy flow of gas and oil; another shell at 1,505 
feet. 
Well full of oil, commenced flowing; continues in oil sand. 
Struck shell; bottom of well; gushed to top of derrick; big flow at 1,495 feet. 
Thick¬ 
ness. 
Depth. 
Feet. 
Feet. 
42 
900 
22 
982 
40 
1,022 
29 
1,051 
25 
1,076 
24 
1,100 
10 
1,110 
22 
1,132 
40 
1,172 
44 
1,216 
9 
1,225 
5 
1,230 
20 
1,250 
18 
1,268 
28 
1,296 
12 
1,308 
11 
1,319 
19 
1,338 
*4 
1,342 
5 
1,347 
39 
1,386 
19 
1,405 
5 
1,410 
34 
1,444 
54 
1,498 
12 
1,510 
14 
1,524 
17 
1,541 
Oil zone, 490-t- feet (1,051 to 1,541+); thickness of producing sands, 347+ feet. 
Typical well log 1,500 feet northwest of the flexure, Salt Lake field. 
[Elevation about 200 feet.] 
Alluvium, clay, and sand; water at 28 feet, sulphur water at 49 feet 
“ Adobe ” or sandy shale. 
Hard “shell; ” salt water under “shell”. 
Clayey shale; 1 to 6 foot “shell” layers every 25 to 50 feet. 
Hard “shell;” salt water under “shell”.. 
“Adobe”. 
Tar sand. 
“Adobe” with occasional clayey shale layers.. 
Oil sand. 
Clayey shale. 
Oil sand. 
Clayey shale. 
Oil sand. 
Clayey shale. 
Oil sand.. 
Tough brown clay. 
Oil sand. 
Clayey shale... 
Oil sand.. - 
Clayey shale. 
Oil sand (main sand). 
Barren white sand. 
Sand with warm salt water and some 11° oil. 
Thick¬ 
ness. 
Depth. 
Feet. 
Feet. 
50 
50 
750 
800 
3 
803 
297 
1,100 
2 
1,102 
163 
1,265 
5 
1,270 
470 
1,740 
20 
1, 760 
30 
1,790 
10 
1,800 
20 
1,820 
20 
1,840 
2 
1,842 
123 
1,965 
10 
1,975 
25 
2,000 
10 
2,010 
10 
2,020 
86 
2,106 
129 
2,235 
150 
2,385 
10+ 
2,395+ 
Oil zone, 495 feet (1,740 to 2,235); thickness of producing sands, 337 feet. 
AREA SOUTH AND SOUTHEAST OF THE LAGOON. 
The underground geology in the area south and southeast of the 
lagoon is similar only in a very general way to that of the area to 
the north. The dip of the strata is probably toward the south or 
