654 E. O. ULRICH INDEX TO TLEYI5ION O] 



OuacMta-Stringtown shales hiatus. . . "" 



Overlap extinction of stratisraphic unite. 4->: 



I : - : : - - " - ■ • ^* 



Progressive. opposed to theory of current scoot 373 



Regressive — 



Strati graphic 



structure. General prevalence of ^~ 



i'-r-'.irj -z : r=i ■-::::> 38G 



Maximum thickness of "-4 



Overlaps in Mississippi Valley. . . 



Interfingerir. g 4 " > 



Stratigraph: 



Overlaps and troughs. Map showing Appalachian . . 293 



Overlaps and unconformities, Diagrams illustrating 191 



Overthrust troughs in New York and New England 442 



Overthrusting in Appalachian tract. - " " " 



Ozark dome, Stratigraphic sequence of 579 



Oiir£ — ri^ :: Br:ii::~i . --S 



Ozark uplift. 420 



Devonian and Waverlyan tilting of . ±- ' 



formations 27.29 



Ozarkia 335.336.338.47: *T4 " 471 " r 587 588.G67 



-_" " "i-.-rr.:.- ::: ; : ":Lrr_ z\ zz ^L : 



mvale outcrops of ! 



unconformities on southern slope 451 



':z' rz.: z -?1\ 



mparison of. with Ordovidan and Silurian GOT 



in Arbockle and Wichita uplifts 



m sarin] Texas 



in New York 



w York and New Jersey 



in southern Appalachian Valley 



in upper Mississippi Valley. . 

 in western North America .... 

 period in Newfoundland and Europe. 



period of system. Definition of 



relations to Cambrian ... 



Sandstones of 



submergence . . . 



thickness in Appalachian region. 



---■:" 

 "Ozarkian" of Hersbey 

 Ozarkian-Cambrian Man- 



Ozark: aii -Canadian bovndarj , 



Emergence of 



