GEOLOGY OF THE MERRIMACK DISTRICT. 48 1 



inclination is much less than that of the rocks farther north. In the 

 north part of the town the inclination is 15°, but it increases southward, 

 and near G. B. Wilson's it is 45°. 



In Croydon, except the mountain range on the west, and the protogene 

 gneiss and the quartz, all the rocks are the common or Lake gneiss. In 

 the south-east corner of the town the inclination of the strata is less 

 even than in Sunapee ; but we have here what is not common in this 

 gneiss, namely, coarse granite veins. There is one south-west of J. Ry- 

 der's ; and near H. Clark's there is one where the crystals of mica are 

 two inches across. Near Rock Bound pond the common gneiss has a 

 westerly dip — a thing quite rare. There is quite an area west of Croydon 

 branch, where the gneiss resembles the protogene more than the common 

 gneiss ; but west of this, as near W. Stockwell's, the common gneiss has 

 an easterly dip of 20°. Along the road from Croydon Flat to Brighton, 

 the strata seem to be horizontal, though the jointing may have made the 

 stratification obscure. The gneiss extends southward, and occupies the 

 whole of the town of Newport, except a strip about two miles wide along 

 the western border. The line separating the gneiss from the schists and 

 the quartzites is very direct ; it crosses the road near N. Gould's, east of 

 D. C. Story's, near T. M. Cutting's, east of Mt. Tug, and between L. P. 

 Tenney's and S. Wright'.3. The common gneiss is found on the high 

 hills in the east part of the town, and specimens were obtained between 

 Newport village and Kelleyville and near A. D. Pike's. We found here, 

 as in Sunapee, that the inclination of the strata is nowhere very great. 

 There is a large amount of drift along the Goshen branch and moraines 

 east of school-house No. 12. In Goshen, there are prominent outcrops of 

 the common gneiss, on the stream north of Mill Village, on Dodge hill, 

 east of the Goshen branch, and at the Four Corners. From Chandler 

 hill, northward, there is a fine-grained rock, which, in some places, is pyr- 

 itiferous; and south of A. D. Bartlett's there is granitic gneiss. This 

 small area belongs to the Montalban series, and is an outlier from, or con- 

 nected with, that in Sunapee. 



In Unity, the common or Lake gneiss is found in the entire east part 

 of the town, and extends west nearly to Unity Centre. The line that 

 separates the gneiss from the schists and quartzites extends southward 

 from Newport, and crosses the road near S. Pierce's, just west of S. 



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