Stratigraphy of Kansas Permian— Beede and Sellards.g$ 
low it is 36 to 50 feet and Hay* finds it to be 25 feet thick 
on the Fort Riley military reservation. The Matfield for- 
mation is represented on the Fort Riley military reserva- 
tion by 52 feet of shales and limestones. § Meek and Hay- 
den give it a thickness of 67 feet in the Kansas river region. 
Hay assigns a thickness of 25 to 30 feet to the Florence 
flint, number 9 of his section, and 52 to 62 feet to the Fort 
Riley limestone, while Meek and Hayden estimated the 
thickness of the Florence flint at 38 feet. 
It is probable that Mr. Hill's footnote referring to 
number 14 of Hay's section to the Marion formation (now 
called the Winfield limestone) is correct. At the time of 
our visit the high hill where Hay probably obtained the 
uppermost members of his section was the target for daily 
artillery practice and the writers scrupulously refrained 
from the study of its rocks and fossils. 
On account of the condition of the exposure at the time 
of our visit and its accessibility a section of the rocks at 
Junction City is given below. The Wreford limestone in 
this section is hidden, occupying a terrace just above the 
mill. The section is located on the south side of the Smoky 
Hill river a little south of east of Junction City, beginning 
at the water level at the mill by the wagon bridge and fol- 
lowing the wagon road to the top of the hill. This section 
is diagonal to the east end of Hay's section* and crosses it 
in a southeasterly direction. 
SECTION AT THE MILL BY THE BRIDGE OVER THE SMOKY 
HILL RIVER A LITTLE SOUTH OF EAST OF 
JUNCTION CITY. 
38. Covered to the place where the road crosses 
the hill, limestone exposures on higher 
ground on either side of road 15 ft. inches. 
37. Limestone, shaly 15 " " 
36. Limestone, huffish brown with small pelecypods 2+ " " 
35. Limestone, shaly, 11 to 12 " " 
34. Limestone, light colored 1 " " 
33. Limestone, Fort Riley "main ledge" 5 "0 " 
32. Limestone, rough, with "car-links" on top.... 3 "6 " 
31. Shales, calcareous, yellow 9 " " 
t Bull. U. S. Geol. Surv., 137, p. 17. 
§ Hay, Loc. cit. p. 17. 
* Loc. cit. pi. ii. 
