HAWORTH AND BENNETT.] General Stratigraphy. 117 
make it one of the most important stratigraphic horizons in 
the Upper Paleozoic rocks for at least two-thirds of the dis- 
tance across Kansas and into Nebraska.” 
Fauna.—See Doctor Beede’s chart, plate XLII. 
Garrison Formation.?° 
The Garrison formation, so named by Prosser, fills the inter- 
val between the Cottonwood and the Wreford limestone. 
FLORENA SHALES.—This name, Florena shales, was given by 
Prosser and Beede,®! from the exposure over the Cottonwood 
limestone in the quarries near Florena, in the Big Blue valley. 
THE NEOSHO MEMBER.—This was so called by Prosser. 
He says: ‘This member was originally termed the Neosho 
formation, from the excellent outcrop in the Neosho valley 
near Council Grove. The Florena shales and the Neosho mem- 
ber are now united to form the Garrison formation, so named 
on account of the good exposures from Garrison south in the 
Big Blue valley.” 
Thickness.—The Garrison formation is put at from 140 to 
150 feet in the volume so frequently quoted here, where Pros- 
ser also states that “the lower shales have a thickness of 13 
feet near Strong.” 
Area.—The Garrison formation very frequently is seen only 
in an escarpment which is capped by the Wreford limestone; 
while again they occupy the platform under which the Cotton- 
wood limestone lies. It extends from the Nebraska’ line to 
the southern part of the state. 
Characteristics.—The Florina shales are literally impreg- 
nated with a limited species of fine fossils in their entire out- 
crop. Near the base of the Neosho member in the Big Blue 
valley a bed of gypsum is found. This upper member is formed 
of green, chocolate and yellow shales, alternating with grayish 
limestones. 
Fauna.—sSee Doctor Beede’s chart, plate XLII. 
Wreford Limestone. 
The Wreford limestone was named by Hay from a little sta- 
90. Prosser, Chas. 8.: Jour. of Geol., vol. x, No. 7, p. 712. 1902. 
_ 91. Prosser, Chas. S., and Beede, J. W.: Jour. of Geol., vol. x, No. 7, p. 712, 
ulagram. 1902. 
92. Prosser, Chas. S.: Jour. of Geol., vol. 111, p. 764. 1895. 
93. Hay, Robert: Highth Bien. Rep. State Bd. of Agr., pt. II. 
