DESCRIPTION OF SECTIONS 17 



13 feet silty clay, homogeneous through disturbance. 



4 feet quicksand, slidden at the top, varves 4633 and 4634 



(cf. p. 79). 

 Silty clay, sandy at the top. Lamination good. 

 Depth to bottom unknown. 



Series measured: 4377-4549, 4556-4585, 4556-4585 

 (4586-4633). 



21. — 1}4 miles N of Northampton, brickyard on the railroad at 

 the sharp bend of the Connecticut River. 



The clay is covered by 3 feet of sand. The varves are very 

 distinct, but the clay has many and broad disturbed zones. 

 Depth to bottom is no doubt considerable. 



Series measured: 461 1-4633, 4611-4661, 4703-4772, 

 4703-4744, 4775-4798, 4801-4910, 4806-491 1, 4823-4840, 

 4832-4910, 4870-4902 4876-4909, 5243-5278, 5243-5269, 

 5396-5479, 5398-5479, (4565-4585). 



22. — Yi mile N of locality 21, slide on the western side of the big 

 oxbow of the Connecticut River. 



The clay is covered by 10 feet of sand. It is gray-brown in 

 ?olor and well laminated, but many and broad zones are 

 disturbed. About 20 feet above the river level the clay 

 passes into varve sand, which extends to unknown depth, 



Series measured: 4617-4683, 4628-4683, 5243-5416, 

 (4569-4594, 4818-4878, 5417-5497). 



23. — 2 miles ENE of Northampton, 1 mile S of Hadley, the 

 eastern bank of the Connecticut River at the sharp bend. 



The clay is covered by 15 feet of sand. It is fat, gray-blue, 

 well-laminated, though with one or two slidden zones. 

 Measurements extend down to 2 feet below river level. 

 The depth of the clay is unknown. 



Series measured: 4845-4877, 4854-4959, 4892-4952, 

 4892-5046, 4948-5170, 4995-5110, 5043-5209, 5141-5222, 

 5243-5280, 5244-5290, 5260-5446, 5455-5510. 



