BULL. GEOL. SOC. AM. 



VOL. 20, 1908, PL. 50 



NORTH AMERICAN FALEOGiO&RAPHY 



BYCHARLES SCHUCHERT I909 



EXPLANATION OF SYMBOLS. 



LANDS ARE WHITE!. WATER AREAS ARE LINED. 

 FORMATION OUTCROPS SO LI D BLACK OR DOTTED. 

 KNOWN SHORE-LINES ARE SOLID LINES; PROBABLE ONES BROKEN 



PAC I F I C MARINE. 



ATLANTIC MARINE 



GULF MARINE 



ARCT \C MA R I N E 





MARINE GYPSUM, OR SALT OR BOTH 



INTERBEDDED MARINES CONTINENTAL DEPOSITS 



CONTINENTAL DEPOSITS 



VOLCANIC EXTRUSIVES 



EXPLANATION OF SYMBOLS 



