BROADHEAD — COAL MEASURES IN MISSOURI. 



311 



Coal Measures in Missouri. 

 By G. C. Broadhead. 



[Read May 6, 1862.] 



In the following pages I have endeavored to present some 

 of the principal facts relating to the Coal Measures of Mis- 

 souri, being the result of several years' careful observation of 

 the Coal Series in Northern Missouri, obtained during my 

 connection with the State Geological Survey. 



Covered, as these rocks often are, with deep Bluff deposits 

 and debris from sandstone and shale beds, the connection of 

 sections is sometimes attended with difficulty. Notwith- 

 standing these difficulties, I have succeeded in forming a 

 connected section of 2,065 feet of Coal strata, based upon 

 observations on the Missouri River, from the N.W. corner of 

 the State to Glasgow. 



Along the river bluffs in Atchison County a connected 

 section was obtained, but in Holt for 18 miles, extending 

 from the N.W. part of the county to near Forest City, the 

 rocks are hidden by the Bluff Formation; but, by crossing 

 the river at Yancton, observing the rocks there and above 

 White Cloud, a connected section was formed with rocks at 

 Forest City. Further down the river, connected sections 

 can generally be obtained at the river bluffs, and when there 

 is any doubt, the connection can generally be made by exam- 

 ining the bluffs along the small creeks. 



The following is presented as a complete section of the 

 rocks enumerated. From No. 172 to 275, I am indebted to 

 notes of Messrs. C. G. Wheeler and H. A. Ulffers' sections in 

 Ray and Carroll Counties. 



SECTION ON MISSOURI RIVER. 



3+ 

 10 



3 3 

 13 



Sandstone, soft and hard ; coarse green- 

 ish gray. 



Slope. This may include the following 

 section : 



No. 2 — 3 feet coarse and shelly bluish- 

 gray limestone; contains Cho- 

 netes. 



No. 3 — 6 ft. argillaceous shales, drab and 

 lead blue. 



No. 4 — 1 ft. blue, argillaceous and pyri- 

 tiferous limestone. 



No. 5 — 4 ft. blue argillaceous shales. 



Rock Creek. 

 Barton's mill. 



