172 C. JV. Gould — Series of Transition Beds 



No. Feet. 



{b) Dark brown to yellow, rough, spongy clay-ironstone 

 with bands and pockets of clay, weathering into con- 

 spicuous buttresses. It is occasionally concretionary 

 or undulatingly stratified, and in places disappears.. 5 



(a) Shales and clays, greenish to yellow, containing 

 many strata of gray shaly sandstone 1 to 8 inches 

 thick. The clay contains many reddish-brown clay- 

 ironstone concretions often geodic and containing 

 clay. On weathering these break with a conchoidal 

 fracture, often forming round or angular, cup-shaped 



fragments with sharp edges 15 



(a), (b) and (c) form the Spring Creek clays 40-55 



1. Blue-black papyraceous shales with selenite crystals, 



not distinguishable from the Kiowa, and grading in- 

 sensibly into No. 2 : 1 5-15 



Section IY. 



On the second butte north of the mouth of Chatman creek 12 



miles northwest of Ashland, Clark county, Kansas. 

 No. Feet. 



6. Thin blanket of Tertiary on top of hill 2-277 



5. Black and brown sandstone often concretionary, weath- 



ering into round boulders __ _..... 5-275 



4. Yellowish gray sandstone and arenaceous shales usually 



quite soft, distinctly stratified, containing fossil leaves 



and twigs, probably conifers 10-270 



3. Dark brown sandstone, often cross-bedded, and more or 

 less conglomeratic, containing numerous white clay or 

 limestone pebbles. Numerous fragments of fossil 

 wood are imbedded in the sandstone. About two 

 hundred yards north are fragments of what appears 

 to have been a silicified log 15-260 



2. Kiowa shales with typical fossils 145-245 



1. Red Beds from the level of the mouth of Chatman 



creek* _ . 1 00-1 00 



Section Y. 



On Chatman creek where the road from Ashland to Day's ranch 

 crosses, 12 miles northwest of Ashland and 2 miles northeast 

 of Section IY. 



No. Feet. 



6. Tertiary to top of hill 20-112 



5. Dark brown or almost black, hard, fine-grained sand- 



stone, mostly weathered out in blocks, containing a 

 typical Dakota flora. The Dakota sandstone 25-92 



* Thickness of Nos. 1 and 2 from Prosser's section at Butte £ mile south. Loc. 

 cit., pp. 166-167. 



