200 KANSAS UNIVERSITY QUARTERLY. 



A. T. Garrison is considerably west of Oketo, this showing a 

 slightly northerly dip of the strata, beside the usual dip of 

 twenty feet or more to the raile to the westward. Blue Rapids 

 is about due north of Garrison and four miles west of Oketo, 

 According to these data and the elevation of the bluffs at the 

 Great Western mill, the Florence flint and limestone should oc- 

 cupy a position there as low or even lower than that occupied 

 by the Strong flint, showing the anticline at this place to be 

 seventy-five or eighty feet. 



A similar fold occurs with its crest at Wymore, Neb. Ac- 

 cording to the direction of the river and the dip of the strata, 

 the Florence flint should be either in or beneath the bed of the 

 river at Wymore, while as a matter of fact it is high above 

 it ; the bluffs formed by it rising 90 or 100 feet above the 

 water. This is clearly brought out by Knight's determination 

 of ^the dip of the strata in this region, concerning which he 

 says: * "It was found that these rocks had a southern dip of 

 five feet to the mile." 



The study of the Nebraska portion is left largely to the Ne- 

 braska geologists, who, I was informed, made a very careful 

 survey of the region there the previous summer. Professor 

 Knight's paper brings out the salient features very clearly. 



The best section of this flint and limestone north of the Kan- 

 sas river is near the depot at Oketo. Here almost the entire 

 section is shown in a single vertical exposure. This section, 

 together with the quarries, gives an excellent idea of the ap- 

 pearance of this limestone and flint in the Nebraska and north- 

 ern Kansas area. It differs somewhat from the same rocks 

 farther south, as will be noticed in the following sections. 

 There is also some difference in appearance in the quarry sec- 

 tions and the weathered exposures. 



(Jkclo Section Ftorenvc Flint and Limestone, near the deiiot. 



stratum. Total, 

 ft. in. ft. in. 



13. Oolite, same as in the Moore quarry + 



12. Light-colored, calcareous, indurated shale 2 — 56—11 



11. Yellowish, irregular, perhaps siliceous limestone 2 — 54—11 



10. Massive limestone, similar to No. 9, but more yellow on 



weathering and is fossiliferous 4 — 5 51 — 11 



9. Massive limestone, cellular, or with little geodes, olive buflf, 



weathering to yellowish gray 5— 47 — i6 



8. Yellowish shale 5—0 42— 6 



*Loc. cit., p. 369. 



