BULLETIN OF THE GEOLOGICAL SOCIETY OF AMERICA 



Vol. 26, pp. 477-483 DECEMBER 4, 1915 



A STILVTIGliAPHIC DISTUl^EANCE TTTHOUGH THE OHIO 



VALLEY, EUNNING FEOM THE APPALACHIAN 



PLATEAU IN PENNSYLVANIA, TO THE 



OZAEK MOUNTAINS IN MISSOUPI.^ 



BY JAMIvS II. (JAUDNKi; 



(Presented before the Sovichj JJccrmher J'.i. J '■>!-'/) 



CONTENTS 



Page 



Relations and extent of the zone of (listurhjiiice 477 



Nature of the structure in the disturlciiuo zone 479 



Mapping of the line of weakness 470 



Intrusive materials 480 



Broad geologic features 481 



Kelations axd Extknt of pi IK Zone of Disturbance 



The ^\Titer in recent years has done considerable geologic work in 

 connection witli a study of tlie oil pools that lie along the extension of 

 the Camptori anticline and the Rongh Creek uplift, in Kentucky. The 

 result of these observations, added to the work previously done by others, 

 has served to show tliat there is a zone of disturbance in the Paleozoic 

 rocks Avhich completely crosses the State in an cast-west direction. To 

 the west it connects with the Shawneetowai fault and Bald Hill uplift, 

 which is slio\vn by F. A\'. DeWolf on the State geologic map of Illinois 

 as completely crossing southern Illinois into iMissouri. To the east it 

 connects with the Warfield-Chestnut Pidge '/.one of folding, which I. C. 

 White has, with a sliglit interruption, mapped across the State of West 

 Virginia into Pennsylvania, showing tlic position of ir on liis State geo- 

 logic map. From the south lino of P('iinsy]\inii;i. on northward to a point 

 west of Clearfield, this same fold is vouclicd for l)y P. P. Hice, State 

 Geologist of Pennsylvania. 



The distance now known to be traversed by this structure is approxi- 

 mately oGO miles. From Pennsylvania southwanl it is one of several 



' Manuscript received by the Secretary of tlio (!i'iil(iv;ical Sociol.v May 14, 1015. 



(477) 



