Geological Papers. 'J'J 



For some fifteen or twenty miles north of the point of the com- 

 plete disappearance of the Cottonwood limestone it becomes so 

 changed as to make very little escarpment, and had it not been for 

 the limestone at the top of the Florena shales forming a prominent 

 escarpment it would not be possible to map the Cottonwood as far 

 south as mentioned. 



A section of the formation as it appears on the east-and-west road, three 



miles east of Cottonwood Falls, on the east side of the south fork of the 



Cottonwood river: 



About 100 yards to the south of the road, on top of the hill, the Cotton- 

 wood limestone is nicely exposed in a small quarry. 



7. The shale is well seen in the road; has first three to five feet of yel- 

 low shale, four to five feet of greenish-blue shale. 



6. A very red fossiliferous lime, one foot thick, probably not a continu- 

 ous formation. 



5. One foot in clay. 



4. About nineteen feet of blue shale to the Neva limestone. The latter 

 is composed of layers of limestone with shale between. The thickest layer 

 is about two feet thick. 



3. A foot of shale. 



2. Two feet of limestone. Only two massive layers are seen in the Neva 

 lime. The appearance of the fracture of this limestone is bluish in color 

 and quite hard; fossils are scarce. 



1. Forty-eight feet of a yellow shale down to the flood plane of the river. 



On the east side of the south fork of the Cottonwood, in the 

 northwest quarter of section 23, township 20, range 8, a very high 

 cliff is found. The Cottonwood limestone makes a very character- 

 istic layer here, and sixteen feet above it is a stratum of limestone 

 twelve to fifteen inches thick, which breaks up into massive blocks, 

 weathering in appearance very much like the Cottonwood. When 

 broken it contains reddish crystalline particles. This layer seems 

 to have thickened up somewhat here, it being the limestone at the 

 top of the Florena shales. On the east of Sharp's creek, in section 

 34, township 20, range 8, we find the lime above the Cottonwood 

 at least three feet thick, massive in appearance and forming a 

 prominent escarpment. It still has its characteristic blue and red 

 particles and weathers in holes. The Cottonwood limestone is very 

 near the bank of the creek. 



In the southeast quarter of section 25, township 20, range 9, at 

 the head of Jacobs creek, near the Chase county line, the Cotton- 

 wood for three miles north makes comparatively little escarpment, 

 the iron weeds marking its course; the Fusulina layer becomes 

 much softer; the other layer has the characteristic color, but ap- 

 pears as flagging. The lower layer has the appearance of the top 

 layer of the Neva. The rather porous layer in the Cottonwood 



