coos AND ESSEX DISTRICT. 



55 



The gray micaceous gneiss of the Montalban group outcrops 

 mer, south-west of the ponds, and there is a considerable area 



The relation of these rocks to those adjacent is shown in Fig. 



The common gneiss of Milan, which is prob- ^ 



ably an older rock than that just mentioned, has s- 



its most northern outcrop on the Androscoggin, 'i 



near the north line of the town. Its eastern ^ 



limit is in the extreme south-east corner of the r. 



town, and its western limit is on the Grand Trunk =. 



Railway, a mile above the Milan water-station. | 



A dark gneiss, that sometimes contains horn- | 



blende and epidote, outcrops two miles above ~ 



Milan water-station, and extends northward west | 



of Milan hills. A similar rock outcrops at Berlin x 



falls. The common gneiss outcrops at Jefferson i. 



hill, and it is quite probable that it forms a con- -; 



tinuous outcrop through Berlin to Milan. There s- 



are several outcrops on the road from the Waum- % = 



bek house to Lancaster, and it extends to within ^ | 



a mile of the village; thence it extends souther- |' I' 



ly, and sweeps around the south-east base of Mt. 3 i 



Pleasant. Its western limit southward in Lan- " i 



caster is near Blood pond. It occupies a great i 



part of the town of Whitefield, and the extreme l^ 



east part of Dalton. | 



Vermont. % 



The Notch mountains in Brunswick are well- 

 marked rocks of the Montalban group. The 

 rocks of Bluff mountain, north-west of Island 

 pond, are probably Montalban, but they are sep- 

 arated from Notch mountains by an extensive 

 area of intrusive granite. South of Notch moun- 

 tains there are outcrops of the Montalban at 

 Maidstone lake. North-east, between the Mont- 

 alban and the Connecticut, there is a small area 



in Dum- 



in Odell. 



5- 



n 



P H 5 



