IOWA ACADEMY OF SCIENCES. 87 



of Iowa, and the Erie limestones of Kansas are now known to 

 be merely the extensions of the Bethany of Missouri. 



In addition to the terrane being identical with the Bethany, 

 the name Erie has been jDreoccupied many times in geology. 



Thayer Shales. — The first special mention of these shales in 

 geology was by Broadhead* in 1884, in his account of the ' ' Car- 

 boniferous Rocks of Eastern Kansas." He described the for- 

 mation in practically the same extension as now understood, 

 gave a good detailed section of them near Thayer, in the west- 

 ern part of Neosho county, Kansas, and repeatedly referred to 

 them as the coal, sandstone or shales of Thayer, Attention 

 was also called to them at Chanute. 



The accounts of the work of the University geological sur- 

 vey of Kansas contain numerous references to these shales. 

 In the description of the Neosho River section, Haworth and 

 Kirkf call them the Chanute shales, and without definition 

 allude to their position between the Bethany and lola limestones. 

 In a subsequent article HaworthJ describes the shales rather 

 fully at Chanute and Thayer but does not give them a specific 

 name, except incidentally in another connection. The first 

 official publication of the survey§ gives them the name Thayer 

 without any allusion to the former name Chanute that was 

 applied. Although proposed independently by the Kansas 

 authors, the name and first description of the formation should 

 be properly credited to Broadhead. 



lola Limestones. — The first application of a distinctive geo- 

 graphical name to this terrane is by Haworth || in 1894. It 

 was not, however, defined in any sense of the word, and the 

 name was an extension of a rather widely known commercial 

 name of the chief quarry rock of the bed — the "lola Marble. " 

 A year later, Haworth*! gave a somewhat fuller account, and at 

 a subsequent date the same writer** gave a more complete 

 description, on account of which the name can really lay claim 

 to recognition. 



ParkvUle Shales. — For the shales lying between the lola and 

 Stanton (Plattsburg) limestones, along the Missouri river, the 

 title Parkville has been recently suggested, ff The peculiar 



* Trans. St. Louis Acad. Scl., Vol. IV. p. 481, 1884. 

 t Kansas Univ. Quart., Vol. II, p. 109. 1894. 



* Kansas Univ. Quart., Vol. Ill, p. 376, 1895. 



§ University Geol. Sur. Kansas, Vol. I, p. 157, 1896. 



II Kansas Univ. Quart., Vol. II, p. 109, 1894. 



H Ibid., Vol. Ill, p. 276, 1895. 



** University Geol. Sur. Kansas, Vol. I, p. 132, 1896. 



tt American Geologist, Vol. XXIII, p. 305, 1899. 



