Page 258 - 1915, Springs of CA.

240 SPRINGS OF CALIFORNIA.
CARBONATED SPRINGS ON MIDDLE FORK OF SAN JOAQUIN RIVER
(MADERA 10).
A number of iron-stained lime carbonate deposits and carbonated
seeping springs are situated on the north side of Middle Fork of San
Joaquin River above the mouth of Cargyle Creek, 7 miles westward,
downstream from the spring in Fish Valley and 3 miles above the
Miller Bridge. They are in a steep portion of the canyon, however,
and are difficult to reach, so that they have been seldom visited.
CARBONATED SPRING ON NORTH FORK OF SAN JOAQUIN RIVER
(MADERA 9).
Near Sheep Crossing, 2^ miles in a direct line northwest of the
carbonated springs on Middle Fork of San Joaquin River, a short
distance below the bridge that here crosses North Fork of the San
Joaquin, on the western side of the stream and on the trail south-
westward from Reds Meadows, is a spring that, like the others, is
cool and strongly charged with carbon dioxide. Lava forms a prom-
inent volcanic terrace along the eastern side of the stream and
again suggests a relation between lava and carbonated water.

CARBONATED SPRINGS ON EAST FORK OF GRANITE CREEK (MADERA 7).
East Fork of Granite Creek is 3 or 4 miles west of North Fork of
San Joaquin River and flows southward nearly parallel with it. A
trail from the south follows up the northern part of the creek and
thence swings westward across Isberg Pass and northward to Yo-
semite Valley. Near the head of the creek is Sadlier Lake, at which
a small meadow affords good camp grounds. On the western side
of the creek, between it and the trail, small carbonated springs issue
at two places that are respectively three-fourths mile and 1J miles
south of the lake.
The upper spring issues from a crevice in massive granitic rock, 20
yards west of the creek. Its water is strongly carbonated and a notice-
able film probably of lime carbonate forms on a small pool below
the crevice. The rock surface over which the water flows is iron-
stained, and considerable areas of rock higher up the slopes are con-
spicuously stained, as if by the same means at a former period of
greater spring flow.
At the lower place the spring rises among the bowlders and gravel
of a small stream course, 15 yards east of the trail. The water
apparently issues from four small vents and forms a shallow pool
over whose surface a white filmy crust, probably of lime carbonate,
collects.
Like that of the upper spring, the water is strongly carbonated
and has deeply iron stained its channel, but the flow is small.