44 University Geological Survey of Kansas. 
gypsum horizon of southern Kansas. His section of the forma- 
tions is: 
HG OE LAL VISTOM Yikes neh e a ron ay smiaey rn iy ne baa aoa as 250 feet. 
CaverCreekeformra tio meen see eee enn RO) 166 
lowerseotichiale sane ee CORN SPAR Age RS Et I5O) 
CedarsAhllsisandstoness sae erie eee ne Uy 
SHUG IME AP INVESIUURES Ho lbcidicoulewoes Uooblleaae sade 15S) OF 
Harper sandstones inc titan aint mime ara cape nanunmmanen G50 ys 
TO Gade esse Ueto alice AY as Fe a A eR 1330 feet. 
The Kiger division includes the Red Beds that lie above the 
Medicine Lodge gypsum. The Cave Creek formation, near Medi- 
cine Lodge, consists of a single statum of massive gypsum, 
called the Medicine Lodge gypsum, but on Cave creek, in 
Comanche county, the lower portion is the Medicine Lodge 
eypsum, 50 feet thick, and separated by the Jenkins clay, 10 feet 
thick, from an upper or Shimer gypsum, 10 feet in thickness. 
The Flower Pot shales, as seen in the Gypsum Hills near 
Medicine Lodge, are variegated gypsiferous clays, with an in- 
terlacing selenite network. The Cedar Hills sandstone, found 
near the base of the Gypsum Hills, is about 50 or 75 feet thick. 
The Salt Plains measures are found in the southern part of the 
state and northern Oklahoma, and abound in salt plains, salt 
marshes, salt licks, and the like. The Harper sandstones form 
the lowest and thickest division and consist of red shales and 
sandstones. 
The caves and natural bridges resulting from the solution 
and erosion of the gypsum in the western part of Barber and 
eastern part of Comanche counties are carefully described. The 
gypsum belt of southern Kansas, Oklahoma and Texas is stated 
to be one of the greatest in the world. The formations are 
placed in the upper portion of the Permian and called the Cim- 
arron series. In this paper no reference is made to the origin 
of the deposit. 
The northern and central Kansas gypsum deposits are placed 
in Cragin’s Geuda measures, equivalent to the Marion of Pros- 
ser, though exception is taken to the lattername. The gypsum 
outcrop at Salina, called the Greeley gypsum, is placed 100 feet 
above the Hope’gypsum, found near Hope and Gypsum City. 
