THE LEVERETT-AMHEKST AREA. 2 1 U 



NORTH LEVERETT (GREENFIELD i^UADRANGLE. SOUTHEAST CORNER). 



Still farthiT south, and just south of the railroad crfissiiig over Locks 

 Pond Brook, the series appears in Stoddard Hill and t'ornis a narrow band 

 running- south between the gneiss and the red sandstone. It is largely cut 

 by granite, which has replaced it over great areas, and this rock shows often 

 the peculiar structure adverted to in the description of the Millers River 

 section (p. 295). The materials, of a very coarse peg-niatite, form a dis- 

 tinctly foliated mass from the parallel aiTaug-ement of the large muscovite 

 scales, and agree in dij) and strike with the suiTounding schists. It seems 

 also, where it comes in contact with the different beds of the series, to have 

 absorbed large quantities of their material into its mass, being near the 

 amphibolite a fine two-mica-grauite of coarse but very even texture, as 

 above the cemetei'v in Leverett, and finer-grained, more quartzose, and 

 almost free from mica in the neighljorhood of the quartzite, as north of the 

 cemetery in North Amherst. Furthermore, the granite seems to have 

 assumed a schistose character where it has intruded itself into the place of 

 the more schistose members of the series, as if by a kind of i)seudomorphisni 

 it had inherited their structure. 



The series in LeAerett is divided into two portions by an exceptionally 

 large mass of granite. The northern portion presents a section from east 

 to west as follows: («) Monson gneiss, (!>) basal quartzite, (c) mica-schist, 

 1i and r together representing the Rowe schist, (r/) Chester amphiVxdite, 

 (e) granite, here occupving the position of the whetstone (Savoy) schist, 

 (./') spangled or Conway mica-schist — all dipping westward from the gneiss. 

 East of E. G. Re\niolds' the quartzite is feldspathic and like the Beniardston 

 upper quartzite. The mica-schist (c) and the anqdiibolite ((/) agree com- 

 pletely with the con-esponding beds of the Northfield section. In Stoddard 

 Hill, 325 feet east of the railroad, the latter is a coarse hornblende-schist, 

 in places very biotitic, in places massive. 



The mica-schist (./'), which I identify with the Conway mica-schist, is 

 the first outcrop we meet, going south, of a rock which, from its expansion 

 across Amherst, I have called the Amherst feldspathic mica-schist. Its 

 appearance here in the same position as the Conway mica-schist of North- 

 field is one of the reasons for identifving the whole mass with the rock so 

 named across the river. The subject is fully discussed on page 222. 



