88 University of Kansas Geological Survey. 
the Red-Beds is exposed, it is a difficult matter to determine their 
thickness from the surface exposures. The well record at Anthony, 
however, affords reliable data for this portion of the terrane which 
gives 551 feet of the Red-Beds. All of this is referred by Professor 
Cragin to the Harper sandstones, while he considers Anthony as 
100 feet below the top of this division which would give a thickness 
of 650 feet for the Harper sandstones. The remaining divisions of 
‘the Red-Beds, Professor Cragin, from surface exposures, estimated 
to have a thickness of from 6380 to 680 feet, which would make the 
thickness of the entire series vary from 1280 to 1830 feet. If Pro- 
fessor Cragin’s interpretation of the record of the Pratt well be cor- 
rect, the total thickness of the Red-Beds must be fully as great as 
that just given, for the Pratt well passed through 626 feet of red 
shales and sandstones before reaching the Salt Plain Measures 
which are given as 155 feet thick. Consequently the Pratt well 
gives a thickness of 781 feet of Red-Beds before reaching the Harper 
division! If this 781 feet be added to the 650 feet of Harper sand- 
stones it will give a thickness of 1431 feet which must certainly be 
regarded as the maximum thickness of the Red-Beds in southern 
Kansas. Professor Hay first estimated the thickness of the Red- 
Beds, where not eroded, from Anthony westward as over 1000 feet.’ 
Later, he apparently considered this too great for in his table 
prepared in 1892 giving the thickness of the Kansas rocks, he gives 
to the Red-Beds which included the Wellington shales, a thickness 
of 900 feet.8 
The result of the studies of the various sections west of the 
Medicine Lodge river indicates a thickness of at least 590 feet of 
Red-Leds to the west of this valley, in the regions where the upper 
part of the beds has suffered the least erosion. Apparently all of 
the deposits west of the Medicine Lodge river are above the Red- 
3eds penetrated in the Anthony well, which would give a thick- 
ness of 1140 feet for the entire series. It seems to the writer that 
1 FEF. W. Cragin, Colorado College Studies, Vol. VI, p. 23. 
2 Robt. Hay, Bulletin U. S. Geological Survey, 1890, No. 57, p.: 26.. Washington. 
3 EHighth Biennial Report Kansas State Board of Agriculture, Pt. II, p. 101, To- 
peka, 1893. Under the description of the Red-Beds is the statement that from the 
top of the Salt Measures to the plateau above the gypsum in Barber county they 
are over 809 feet thick (p. 105). This of course did not include the 200 feet or more 
of Red-Beds now known above the gypsum in Clark county. 
