Page 192 - 1915, Springs of CA.

176 SPRINGS OP CALIFORNIA.
improved except as drinking pools, but two camping and fishing re-
sorts, known as Koses Kange and Llewellyn Springs Camp, had been
established in the vicinity.
As in other portions of this region the rocks consist mainly of
altered sediments. Near the iron-bearing springs, however, glauco-
phane schist and float fragments of mica-garnet schist and pyroxene
were noticed.

JACKSON VALLEY MINERAL SPRINGS (MENDOCINO 6).
Three springs issue close together on the southern bank of Mud
Springs Creek, about 18 miles northwest of Sherwood. They are
about 2 miles northeast of Branscomb post office in Jackson Valley
and hence are locally known as Jackson Valley Mineral Springs. They
rise in rock-walled basins from sandstone. The principal spring is
moderately carbonated and also tastes distinctly alkaline, probably
of soda. Some iron is deposited in the pool, whose discharge is perhaps
2 gallons a minute. About three yards away there is a second basin
of smaller discharge in which a greater amount of iron is deposited.
The third spring, about 4 yards farther downstream, is apparently
little mineralized and discharges about 5 gallons a minute of cold
water.
Within recent years-the property has been made a small camping
resort, and water from the principal spring has been bottled and has
found a local market.
JACKSON VALLEY MUD SPRINGS (MENDOCINO 7).
Three-fourths of a mile northeast of Jackson Valley Mineral Springs,
on a knoll or bench on the northern side of the stream canyon, about
200 feet above the creek, a group of mud springs have built up the
small, well-formed craters shown in Plate XIII, A (p. 242). The mud,
which is light gray in color, covers a rudely circular area about 50
yards in diameter. In its southern half there are five craters, 2 to 4
feet high, but in 1909 only two of them had appreciable overflows.
The largest one was about 5 feet in diameter and 4 feet high and dis-
charged perhaps one-fourth of a gallon a minute of cool alkaline mud.
In summer the mud is said to be covered by a deposit of efflorescent
alkaline salts. The mud in the craters is kept in constant motion by
bubbles of gas, which is probably carbon dioxide though its character
was not definitely determined. The formation of the craters by mud
which is probably brought up by a cool gas instead of by steam, as is
usual in areas of mud volcanoes, is a unique feature of this locality.
In a gully on the eastern side of the knoll water that is milky with
suspended mud issues and forms a considerable stream. The rocks
exposed in this gully indicate that the knoll is composed of crushed
shale and sandstone, and this structure and topographic form of the