66 _ University of Kansas Geological Survey. 
presence of iron. No fossils were found in the rocks at this vicinity, 
nor west of that town in the Marion. At this locality are mineral 
springs, while along the valley of Salt Creek above and below the 
Springs is an incrustation of salt. The porous rocks in this part of 
the Marion formation have been shown by other writers to contain 
the thick beds of rock salt of southern and central Kansas!. This 
has been recently very clearly stated by Professor Haworth as fol- 
lows: ““Well records have been obtained from many different parts 
of the salt region which, when drawn to scale and compared, show 
very conclusively that the salt beds lie above the heavy limestone 
beds, and below a bed of blue shale which in turn is below the ‘Red- 
beds.” As the blue shales so well developed in Sumner county and 
adjacent territory underlie the ‘Red-beds,’ and as the latter are ad- 
mitted to be the first above the Permian, it follows that the blue 
shales are Permian. But as the salt beds are below the blue shales, 
which approximate 300 feet in thickness, they are well within the 
Permian’.” For these salt and gypsum bearing rocks, evidently a 
portion of the salt bearing beds being in the vicinity of Geuda 
Springs, Professor Cragin proposed the name “Geuda salt-measures,” 
which, later he withdrew in favor of the prior name Marion forma- 
tion, as already stated. 
In the Anthony well, in Harper county, 404 feet of rocks have 
been referred to the “salt beds®,” though in the well section it would 
probably be a difficult matter to determine the exact line of division 
between the Marion and Chase formations. Professor Cragin has 
estimated that “the thickness of the outcrops probably varies from 
300 to 400 feet” and has concluded that the dip “in southern Kansas 
is southward and westward.” 
No attempt was made to trace the line of division between the 
Marion and Wellington formations across Sumner county which if 
accurately done would be an undertaking of some difficulty on 
account of the level nature of the county and the gradual transition 
from the lower to the higher formation. 
1 Robert Hay, Seventh Biennial Report Kansas State Board of Agriculture, 1891, 
pt. II, p. 83. Highth ibid., pt. II, p. 105. KH. W. Cragin, Colorado College Studies, Vol. 
VI, 1896, p. 9. 
2 University Geological Survey of Kansas, Vol. I, 1896, p. 191. 
33 Wowie, JPR, BOs 
4B. W. Cragin, Colorado College Studies, Vol. VI, p. 15. 
