DESCRIPTION OF SECTIONS 23 



43. — >2 mile WSW of Claremont Junction, N. H., clay pit on 

 the road. 



10 feet sand and silt. 



Sandy varve silt with very thin winter layers. Average 



thickness of varves 2^ to 3 inches. One or two zones 



disturbed. 

 Depth to bottom considerable. 



One series of 70 and another of 100 varves measured from 

 the same horizon. The series are not connected with 

 the normal curve. 



Localities in the Merrimac Valley 

 44. — 7 miles SSE of Concord (railroad station), N. H., old 

 brickyard halfway between Suncook and Hookset. 



The clay is covered by 5 feet of sand. It contains several 

 disturbed zones. Depth to bottom is unknown. 



Series measured: (5764-5791, 5804-581 1, 5850-5875)- 



45. — 4>2 miles SE of Concord, old brickyard on the brook 

 between the Merrimac River and Pembroke. 



3 feet weathered cla}^. 



Clayey silt with excellent lamination. 



3 to 6 feet down to till, which shows in the brook. 



Series measured: 5709-5749. 



46. — 2 miles S of Concord, clay pits 400 to 700 yards W of Bow 

 Junction. 



Surface of wash plain. 



10 feet sand. 



Sandy silt, varves somewhat wavy since deposited in too 



shallow water, numbers 6308-6352. Winter layers hardly 



distinguishable. 

 Excellent clay, varves 5771-6307. 

 Sand to silt, somewhat slidden. 14 varves of an average 



thickness of 5% inches. 

 8 to 10 feet down to till, which appears in the brook close by. 



The lowest horizons measured 700 yards W of Bow Junction, 



just N of the highway bridge across the brook. 



Series measured: 5771-6332, 6233-6352, 6305-6352. 



