74 H. B. Miser — Llanoria, the Paleozoic Land 



by E. 0. Ulric]i22 and J. B. Woodworth.^^ The area of 

 bowlder-bearing beds in the Caney shale, according to 

 Taff, who carefully studied their character and distribu- 

 tion, extends from the vicinity of Atoka to within a few 

 miles of the Oklahoma-Arkansas line. The identity, 

 lithological and paleontological, of the bowlders mth a 

 large part of the Ordovician and Silurian strata in the 

 Arbuckle Mountains, and the local relations of the 

 Arbuckle and Ouachita mountains, according to Mr. Taff, 

 ^^ press toward the conclusion that the erratics had their 

 sources in a range or group of mountains in the region 

 now occupied by southern Indian Territory and northern 

 Texas. "-^ These mountains he considered a part of 

 a supposed southeastward extension of the present 

 Arbuckle uplift. 



Veatch on source of Paleozoic sediments in Ouachita Mountains. 



A. C. Veatch,^^ in a brief discussion, of the Paleozoic 

 rocks of the Ouachita Mountains, expresses the opinion 

 that the land area that furnished the material for these 

 immensely thick series of rocks lay to the south and 

 southeast. He continues, ''The relative position of the 

 continental and oceanic areas was therefore at this time 

 [Paleozoic era] somewhat reversed — the ocean occupying 

 the greater part of what is now the central and western 

 United States and the land the Coastal Plain of the east- 

 ern and southern United States and portions of the 

 Atlantic Ocean and Gulf of Mexico. ' ' 



Pennsylvanian rocks of north-central Texas. 



According to N. F. Drake-*^ most of the clastic material 

 that forms the Pennsylvanian rocks of the Colorado coal 

 field in north-central Texas appears to have been derived 

 from an extensive old land area to the east and northeast, 



-^Ulricli, E. O., Eevision of the Paleozoic systems, Geol. See. America, 

 Bull., vol. 22, p. 352 footnote, 1911. 



-' Woodworth, J., B., Bowlder beds of the Caney shale at Talihina, Okla- 

 homa, Geol. Soc. America, Bull., vol. 23, pp. 457-462, 1912. Abstract, 

 Science, new ser., vol. 35, p. 319, 1912. 



-* Taff, J. A., op. cit.. Science, new ser., vol. 21, p. 225. 



-^ Veatch, A. C, Geology and underground water resources of northern 

 Louisiana and southern Arkansas, U. S. Geol. Survev Prof. Paper 46, p. 17, 

 1906. 



^^ Drake, N. F., Report on the Colorado coal field of Texas, Texas Geol. 

 Survey, Fourth Ann. Eept., pp. 373-374, 1893. (Eeprint), University of 

 Texas, Bull. No. 1755, pp. 15-16, 1917. 



