HAWORTH AND BENNETT.| General Stratigraphy. 89 
prominent escarpments, stretching from a few miles north of 
the south line of the state and passing across the east line to 
the east and southeast of La Cygne. They are readily recog- 
nized throughout this entire distance, as they form the main 
mass of the hills from the water reservoirs at Coffeyville 
northeast throughout the entire distance named. At Pleasan- 
ton the schoolhouse hill, capped with the Bethany Falls lime- 
stone, is composed principally of the Pleasanton shales. To the 
east and southeast of this prominent line of escarpment they 
occupy the low ground at the outcropping of the Coffeyville 
limestone already given. 
Characteristics—The Pleasanton shales are quite variable 
in character at different places and at different levels. They 
contain large numbers of calcareous lentilles and concretionary 
masses, and also here and there have fairly well-bedded sand- 
stone layers. Just north of Pleasanton this sandstone is so 
well developed that it is extensively quarried for the markets. 
Oil and Gas in Pleasanton Shales.—These shales also are 
comparatively productive of oil and gas. They furnish these 
products at Rantoul, Paola, and a number of places to the west. 
Fauna.—See Doctor Beede’s chart, plate XLII. 
Bethany Falls Limestone.?5 
The name Bronson limestone was used by Adams to desig- 
nate the combination or assemblage of three distinct limestone 
formations which are definitely marked in the southern part 
of the state, but which come close together on the north by the 
thinning of the interbedded shales, so that from the middle of 
eastern Allen county northeastward they produce but one es- 
carpment. These limestones have caused more discussion and 
confusion in the use of names than any other formation in the 
state. In his report in 1866 Swallow confounded them with a 
number of overlying limestone formations, called them in 
places the Well Rock Series, and again the Spring Rock Series, 
and again included them in his Marais des Cygnes Coal Series. 
When this Survey first began investigations Bennett?* ran a 
geological section west from Fort Scott and encountered these 
three limestones in the prominent escarpments near Union- 
town. He recognized two shale partings, and therefore spoke 
of the limestones as forming a “triple system,” which term was 
25. Adams, Dr. George I.: U.S. G.S., Bull. 238, p. 17. Washington, 1904. 
26. Bennett, Rev. John: Univ. Geol. Surv., vol. 1, p. 95. Lawrence, 1896. 
