U. S. GEOLOGICAL SURVEY. 



BLANDFORD. 



Sea Leveit.'. 



CHESTER AMPHIBOLITE. 



BLANDFORD. 



Sea 



HOOSAC SCHIST. 



TOLLAND. 



CHESTER AMPHIBOLITE 



GRANVILLE 



^^^P'^TTTrrrn 



Sea Lever.' 





Ml 



BECKET GNEISS. 



WASHINGTON GNEISS. 



HOOSAC SCHIST. SAVOY SCHIST. 

 CHESTER AMPHIBOLITE. 



TOLLAND. 



GRANVILLE. 



ill , 

 Sea Level.'/ 



'■ '■;:i;.'i I.'.' \\\\nhniii<///. 



WASHINGTON GNEISS. 



BECKET GNEISS. 



SCHIST. HOGS/ 



CHESTER AMPHIBOLITE. 



SECTIONS ALO^ 



