BEEDE: RECONNAISSANCE IN THE BLUE VALLEY. 197 



Deuuis Section, east of Bif/cloir. u^^^'ux. ft°*hl: 



14. Olive shales , 3—6 44—6 



13. Greenish-gray limestone, many small fragments of fossils, 



shaly in the middle 1—0 41—0 



12. Yellowish arenaceous shales 1 — 6 40—0 



11. Light gray, fine-grained sandstone — 6 38 — 6 



10. Green shales 10—0 38—0 



9. Three-inch layer of clayey limestone 0—3 28—0 



8. Olive to yellowish, mostly indurated shales, soft above, with 



small calcite nodules 10 — 27 — 9 



7. Mud-cracked limestone, a continuation of the stratum below, 5 — 17 — 9 

 6. Yellowish-gray, clayey limestone or indurated calcareous 



shale 0-6 12—9 



5. Yellow shale, fossiliferous ( Drrt)ija crassa ) 1 — 12 — 3 



4. Shaly argillaceous limestone, massive above, grading into 



stratum below 1 — 6 11 — 3 



3. Yellowish fossiliferous shale, about. 4 — 9^^9 



2. Cottonwood limestone layers, aggregating 5 — 9 5 — 9 



1. Covered slope to the little creek below, about thirty-nine feet. 



Some distance above this section the Strong Hint sets in. It 

 will be noticed that there is no limestone with a layer of flint 

 above in the above section, as given by Professor Knerr in the 

 section farther west, though the section rises considerably 

 higher above the Cottonwood limestone. However, there is 

 such a layer at Blue Rapids, in the creek west of the Great 

 Western Plaster Company's mill, on the road running north. 



Prof. G. C. Broadhead (loc. cit.) observed a section near Blue 

 Rapids which includes at least a part of the Neosho formation 

 and part of the Chase. He states that it is a general section. 

 It probably extends back into the hills a considerable distance. 

 The section is as follows : 



"The following is about a general section of the rocks seen at Blue Rapids, 

 ten miles further west [from Bigelow], and includes beds still above those just 

 named, and also Permian : 



"1. On hilltop a bed of limestone near summit. 



"2. One hundred feet probably all shale; some chert on slopes. 



"3. Four feet of magnesian limestone, in layers of four to twelve inches. 



"4. Fifteen feet shales with small geodes. 



"5. Four feet limestone in sixteen-inch layers; color whitish drab, with blue 

 chert between the layers. This limestone is much used in building in Blue Rap- 

 ids, and affords a handsome building rock. 



"6. Thirty feet shales. 



"7. One and one-half feet good bed of building stone, coarsely cellular; also 

 extensively used. 



"8. Thirty feet shales, red in lower part. 



"9. Four feet limestone. 



" 10. Four feet nodular shales. 

 14-K.U.Qr. A-ix3 



