CALHOUN COUNTY. 13 



but the fossils obtained here are too few and imperfect to enable one to identify 

 the strata with those at more northern localities, where fossils are abundant and 

 well preserved. From Reed's Landing to Farrowtown, this limestone forms a 

 continuous cliff, except where it is intersected by the vallies of the small streams, 

 the bluffs ranging from two hundred to two hundred and fifty feet in hight. 



These bluffs continue, with but slight interruption, to Hardin, where they 

 are fully two hundred and fifty feet in hight, the upper escarpment being formed 

 by the lower portion of the Burlington limestone, the sloping talus below cov- 

 ering shaly limestones and shales of the Kinderhook group, while near the 

 river level we find the upper portion of the Niagara limestone, overlaid by the 

 Hamilton. 



The following section shows the thickness, and order of succession of the 

 beds forming the bluff a half mile above the town : 



FEET. 



Loess capping the bluff. 30 to 40 



Burlington limestone 70 " 80 



C Thin bedded limestone and shale 80 " 85 



Kinderhook. .. < Slaty limestone 10 



(^ Fine grained, light blue limestone 5 



Hamilton limestones 8 " 10 







Niagara limestone 20 



These beds are mostly hidden beneath the sloping talus of the bluff, except 

 the upper and lower limestones, the former outcropping at the top of the bluff 

 and the latter on the river bank, and on the small creeks by which the bluffs 

 are intersected. 



Following down the river bluffs, below Hardin, these beds continue, with but 

 slight variation, to the south line of town 11 south, range 2 west, where the 

 high bluffs terminate on the eastern side of the county. At Mr. Belt's place, 

 about three miles above Monterey, the following measured section was made in 

 1853, on our first visit to this county : 



FT. 



Loess capping the bluff, not measured. 



Burlington limestone 50 



Shaly ash gray limestones 95 



Blue clay shale 18 



Hamilton limestone 12 



Slope covering Niagara limestone 40 



Two miles below this, the Burlington limestone disappears for about two 

 miles, and the bluffs, which are comparatively low, are formed by the older 

 formations, but a mile below Monterey, it comes in again, capping the bluff for 

 a short distance, with a strong dip to the northeastward from its proximity to 

 the Cap au Ores axis. It extends down to the southeast quarter of section 14, 

 town 12 south, range 2 west, which is the most southerly point where it was seen. 

 On the other side of the fault, on the northeast quarter of section 35, town 12, 



