CORRELATION OF CARBONIFEROUS ROCKS 345 



As already stated, Mr. Beede has traced the .Burlingame 

 limestone from near Topeka to the Nebraska line, where it is, 

 apparently, exposed in the bluff on the northern side of the Great 

 Nemaha River, nearly due north of Robinson, Kansas. At the 

 base of the bluff, several feet below the limestone, coal has been 

 mined which Mr. Beede thinks probably represents the Silver 

 Lake coal, and his description of the stratigraphic position of 

 other coal beds in northeastern Kansas strongly supports this 

 correlation. 1 



On the Kansas River the Wabaunsee formation has a thick- 

 ness of 500 feet, and this, apparently, agrees quite well with the 

 thickness of the rocks included between the Burlingame lime- 

 stone in southeastern Nebraska and the limestone west of Auburn, 

 Nemaha county, which is considered to cap the formation and 

 is correlated with the Cottonwood limestone. Mr. Beede states 

 that it is but a short distance east of the exposure of Burlingame 

 limestone and coal in the bluff of the Great Nemaha to the 

 river's mouth, where Hayden saw the outcrop of coal and sand- 

 stone on the bank of the Missouri River. 2 This coal, according 

 to Mr. Beede, " is without doubt the same coal that is mined on 

 the north side of the Great Nemaha and, consequently, probably 

 of the same horizon as the Silver Lake coal." 3 



This is an important correlation, for Meek was inclined to con- 

 sider the outcrop at the mouth of the Great Nemaha as strati- 

 graphically above the famous Nebraska City section, stating 

 that: "lam inclined to believe this sandstone under the coal 

 the same bed seen at Peru and Brownville, and at the base of 

 the section at Aspinwall, though it may be another holding a 

 lower position. If it is the same, there can be little doubt but 

 the exposures here near Rulo hold a position in the series above 

 the horizon of the Nebraska City section." 4 Mr. Beede has 



1 Kans. Univ. Quar., Vol. VII, p. 232, and the forthcoming Vol. XVI, Trans. Ivans. 

 Acad. Science. 



2 Final Rep. U. S. Geol. Surv. Nebraska and portions of Adjacent Territories, 

 1872, pp. 115 and 116. 



3Trans. Kans. Acad. Science, Vol. XVI. 



4 Final Rep. U. S. Geol. Surv. Nebraska, etc., p. 116. 



