SECTION OF THE ROCKS 
NOTE. : FROM THE 
From B to C and from F to G, the scale F ' ° 
is exaggerated, the true scale being as shown, Triassic of Chester Co. to the Cretaceous of New Jersey, Lada aie 
een! F Gr Err. On a line about N.W. and S.E. passing through Philadelphia, Pa., . 
BY THEODORE D. RAND. 
North Sout CronValhy 
CVU. Chesier Valley. CVA. Wayne. S 
a R — Radaor Sta. Rosemont. Bryn Maur Merion Sta. = 
ms = 2 ae. % me ar 7 | 8 8 5 
-S age SS os OS a tae & sd Ms Philadephia e 8 
~ = 8 Seopa de SES XS oS eee 5 aos ag SchishECne: ae = 
Baa ax Se FE 3 SY ew. §§ S 2 See 8 Mica Hornblende SchishbOnesses. S 8 
Se Si RS - x \ Ny Ss Gs AS N S S§ OS ee “1 he uf R aS 
Nie wf ver \e Ne xe ag AS Q r wv: he 5 ee c Sia Vea ios \ \ ¥ ' \ , \ : 
oe : ° 
Ss a" ; 
{ 
