Grays HLL 
Shannon Win 
Malden Hill 
Foye Hill 
Abingdon 
Joppa 
Stemmons ttin 
© Fodonal Min 
Schoolhouse Will 
Timber Neck 
Contee 
Reform School, D.C, 
Overlook lon, D.C. 
Ft Washington 
MtVernonVa 
Tadinn Head 
LOOAT, COLUMNAR SECTIONS 
MONOGRAPH XLVI PLUXXX 
Seetion A-B 
Burtonsville to Devils Branch 
Section C-D 
LEGEND JURASSIC(?) 
Rarit) Patapseo Arundel 
tes 
x Cyea! 0 Fossil ete. localities 
-s 
Le 
YINVAIAEH Ee, 
MAP ae 
ANG THE AREAL DISTHIEMETTION ¢ 
sigs tp THE FORMATIONS 
on THe 
POTOMAC GROUP 
MARYLAND 
Hey ALCO UEETTE LESTE 
P ituxent 
: nis 
“cr plant rem 
~ Uther |} 
