SANTA CLARA VALLEY: OJAI VALLEY FIELDS. 
39 
Sulphur Mountain itself is perhaps an interfault block, a possible frac¬ 
ture existing at the line of contact of the Modelo and Fernando for¬ 
mations south of the ridge, although the succession maybe merely one 
of unconformity. The writer is inclined, however, to the view that 
a fault is present. The linear extent of the folds in Sulphur Mountain 
has not been determined. The east end of Sulphur Mountain presents 
a syncline at its crest, an anticline at its northern base coincident with 
the lower portion of Sisar Creek, and another anticline south of the 
mountain in the vicinity of the Adams Canyon oil wells. 
There is an anticline south of the western portion of Sulphur Moun¬ 
tain showing in the road which descends from the summit to the upper 
part of the Canada Larga. In the line of this anticline is a like fold 
at Ventura River, and it is possible that the two are continuous. 
Although the rocks involved in this fold belong mainly to the Modelo 
formation, gray and brown argillaceous shales and heavy sandstone, 
probably of the Fernando formation, lie immediately upon its south- 
may have become affected. 
ern flanks and locally 
OIL WELLS. 
The oil wells in the Ojai fields comprise those of the Union Oil Com¬ 
pany on the Pirie ranch, at the west end of Lion Hill; two in Lion Can¬ 
yon, about \\ miles southeast of the Pirie wells; a couple drilled by 
Langdell, Newmark & Roan near the summit on the north slope of 
Sulphur Mountain, and a group along the northeastern side of the 
Upper Ojai, sunk by the Whidden-Double, Sobra Vista, and Santa . 
Paula oil companies. 
PIRIE RANCH WELLS. 
Two groups of wells belonging to the Union Oil Company are located 
on the Pirie ranch south and southeast of Nordhoff, in the Lower Ojai 
Valley. The first group, consisting of three wells, is about a mile S. 
25° E. of the town, on the west end of Lion Hill; the second group lies 
across a small valley, about three-fourths of a mile S. 70° W. of the 
first. All the wells penetrate the red beds of the Sespe formation, 
those of the first group being about 100 feet south of the axis of the 
Lion Hill anticline, and those of the second on the south limb of the 
same anticline, at least three-eighths of a mile south of its axis. At the 
time of the writer’s visit the wells were abandoned and only one der¬ 
rick was standing. It was learned, however, that black oil accom¬ 
panied by considerable quantities of gas was struck in the wells of the 
first group, and that for a time they were pumped. Gas was heard 
rumbling in one of the holes and another contained water. No seep¬ 
ages were noticed in the locality of the wells. 
Five wells constitute the second group, four close together and a 
fifth about one-fourth mile to the southwest. The deepest of the four 
