540 THE JOURNAL OF GEOLOGY. 
gravel, to which reference has already been made. It is com- 
posed of glacial gravel, derived from the till which covers this 
end of Long Hill. The elevation of its upper edge is 369 feet 
A.T. (6) A wave-built terrace of trap gravel, 100 to 150 yards 
wide, is found just north of Lyons Station, at the southern end 
of what was apeninsula. Northward from this terrace along the 
shore line rounded pebbles of local origin occur in considerable 
numbers. As the red shale rises to the lake level at Basking 
Ridge the shale pebbles become more abundant in the shore 
gravels, while the trap pebbles become proportionally less. 
(c) Southwest of Moore’s hotel, Basking Ridge, where the old 
shore line has an elevation of about 367 feet, there is a broad 
wave-built terrace at the head of what was a small bay. The 
gravel of which it is composed is chiefly from the local shale. 
(a2) Near the sag in Long Hill, a mile anda quarter west of New 
Providence, there is a short but pronounced spit. Northeastward 
it is continuous with what may be a wave-cut terrace, as else- 
where noted. The gravel is chiefly of red shale, derived from 
the subjacent terrane. In cross-section the lines of bedding are 
seen to dip outward, forming what may be called anticlinal strat- 
ification. (¢) Another short spit occurs about three-quarters of 
a mile west by north of Berkeley Station. Its elevation is 
somewhat (45-50 feet) less than the maximum level of the 
lake. 
The composition of these gravel beds, considered in relation 
to the underlying and adjacent indurated formations, is most 
significant. On Second mountain—a great trap ridge—the 
gravel deposits attributed to shore action are composed almost 
wholly of fragments or pebbles of trap, with only occasional for- 
eign pebbles. The same is true, in the main, of Long Hill, though 
on the south side of this ridge the red shale occasionally rises to 
the level of the lake. Where gravel beds are found on shale 
slopes instead of trap, shale has made the principal contribution. 
The spit west of New Providence is an instance in point. Where 
the shore of the lake was against a drift-covered slope the gravel 
beds are composed of drift gravel. The terrace in the cemetery. 
ee 
