Geological Papers. 75 



ADDITIONAL OBSERVATIONS ON THE GEOLOGY OF 



KANSAS. 



By Lyman C. Wooster, Ph. D., Emporia. 



ILLUSTRATION OF CLASSIFICATION FORM. 

 Formations. Times. Rocks. 



Paleozoic Eon. Series. 



Carbonic Era. System. 



Coal Measures or Kansan Period. Group. 



Upper Coal Measures or Upper Kansan Epoch. Stage. 



Lower Coal Measures or Lower Kansan Epoch. Stage. 



Emporia Beds Hemera. Beds or substage. 



Carboniferous Bock System of the Carbonic Era. 



Thickness, 5655 feet. Time, about 2,500,000 years. 



The rock groups and the corresponding time periods: 

 I. Mississippian. 

 II. Coal Measures, or Kansan. 

 III. Permian. 



I. ROCKS OF THE MISSISSIPPIAN PERIOD. 



But one rock stage of the Mississippian period is represented 

 in Kansas, that of the Keokuk epoch. 



1.— Strata of the Keokuk Epoch. 



The rock beds found in southeastern Kansas. Thickness, about 400 feet. 



(1) Galena {Boone) ^e<is, thickness about 400 feet. These 

 consist of layers of bluish limestone. In the upper portion of 

 these beds the limestone has been extensively eaten out, probably 

 by water containing carbon dioxide, and great quantities of chert, 

 lead sulfide and zinc sulfide have been deposited in the cavities. 

 The ores of lead and zinc are extensively mined at Galena, and in 

 the vicinity of Joplin, Mo. The annual output is worth about 

 $10,000,000 for both metals. The ores are smelted at Cherryvale, 

 lola, Chanute, Neodesha, and Pittsburg. At about the close of 

 this epoch, the Galena beds were raised above the level of the sea 

 and deeply eroded by sub- aerial agencies. The amount of this 

 erosion is unknown. A deep well at Emporia reached the Galena 

 beds of the Mississippian limestone at a depth of 1920 feet. The 

 level of the surface at the mouth of the Emporia well is 1130 feet 

 above the level of the sea; the level at Galena above the same 

 datum plane is 870 feet. The distance from Galena to Emporia in 

 a straight line is 118 miles; therefore the dip of the Galena beds 



