Vm] x\xi x"1I': 



CONTOUR LINES. THE HADL OF THE FAULT ANO TKC EXTENT Of THf. TRAP BEDS ARE UNKNOW 



[;j TRAP RUBBISH. [^ POTTSTOWN SHALES. [3 L ANSDALE SHALES 1 ] NORRISTOWN SHALE 



Q TRAP IN PLACE □ PERKASIE SHALES. □ GWYNEDD SHAL ES. {[jjJIJ PA. NO. II LIMEST'N 



SCALE:- 2 MILES TO AN INCH, OR 1 : i;6720. 



N ! 



t— I — \ — I— H 



H \- 



6 MILES 



SECTION IN THE LINE A B. 



