PLEISTOCENE MARINE SUBMERGENCE " 43 



described by Woodworth (82, pages i54-56,plate 15) ; and recently 

 by Barker (94, page 12). In passing north from Street road it 

 is seen that the south point of the hill is strongly wave-swept. At 

 the forks of the road is a terrace at 350 feet; then we find a bar- 

 cliff at 370, a good shelf-bar at 430 to 435 feet by the cemetery 

 and house, a strong bar at 460 under the house of W. J. Cross- 

 man, a heavy cobble bar-terrace at 480, the wave-smoothed edge 

 of the summit plain at 530 to 535, and a heavy summit cobble bar 

 at 540 feet. The theoretic summit of the sea-level waters here 

 is something over 550 feet. The rear side of the plain, next the 

 bare rock face of the mountain, is a few feet lower than the front 

 and smoothed by some stream flow past the ice margin that drained 

 the Crown Point embayment. Shallow kettles lie on the plain 

 and strong kettles at the edge. Woodworth gives a map of the 

 district (82, plate 15) and thought that the standing water did not 

 reach above 500 feet because of the unfilled kettles. But we have 

 multitudes of kettles in deltas and river plains, and abundant 

 evidence that drift-buried ice blocks may persist indefinitely as 

 long as the area is under water. The kettles were not produced 

 until the locality was lifted out of the estuary. The front of the 

 plain is capped with cobble beaches which have been made dis- 

 continuous by the slumping in production of the depressions. The 

 kettles have changed the surface as left by the waves, but have 

 not fatally obscured the record. From the edge of the plain, 540 

 feet, down to the lower silt plain, 340 feet, the front of the kame- 

 moraine is marked with bars and benches. 



The deep embayment in the mountain wall, west and southwest 

 of Crown Point, was partially filled with drift and stream detritus, 

 largely of fine and clayey material. When the district was lifted 

 these deposits were planed by the lowering waters, producing a 

 conspicuous display of terraces and flat-topped areas. The evi- 

 dence of standing water is found much above the marine plane, 

 and perhaps represents glacial waters held in the embayment. The 

 shifting outlet or control of the glacial waters is not determined, 

 but probably was along the steep east face of Buck mountain. It 

 is possible that there are unrecognized elements in the history of 

 this region. The high levels are best seen west of Crown Point 

 Center and at White Church, rising up to 610 to 615 feet. 



Barker's map (94, no. i) represents approximately the summit 

 level of the marine invasion. His maps are correlated to imaginary 

 outlets or flow-control which did not exist; and they attempt to 

 represent distinct water levels which are not recorded either there 



