: - 42 - 
yards away there are none of these chipse Tebttles of the same type 
were noted also at other pits in the area tetween the moraine ard 
Buzzards Baye These stones are a further indication that the mate~ 
rials composing the plain were spread southwestward from the Cape 
Cod Bay lobee os 
The northern end of the plain rises to merge with the southwest- 
err part of the Sandwich moraine in the area in which the latter 
overlaps the Buzzards Bay moraines Slumping of materials around many 
deep kettles in this territory makes the distinction between sandy 
till and coarse gravel impossitle. «©The boundary between material 
that should te designated as moraine, and that which should te called 
outwash is, therefore, very indefinite. Much coarse gravel is ex- 
posed in pits along Canal View Road in the southwestern part of the 
morainic drea. Jlarge. angular blocks scattered over the surface in 
this district also show that ice was nearby when these materials 
were deposited. High knobs,made of gravel inthis territory must 
have accumulated, therefore, more or less as kames. Patches of al- 
most boulderless terrain and exposures of gravel between tbouldery 
knobs of till, north and east of this, suggest that deposits made by 
the meltwaters may have extended far tack into the heart of the mo- 
rainee Such complex interfingering of deposits and irregularity in 
topozsraphy are to beexpected where. outwash deposits have accumulated 
against a moraine while it was under construction, and these coudi- 
tions are found in front of many modern glacierse 
Position of Buzzards Bay Lobe 
The gravel fan of the Bourne region was built against thick ice 
on its west side. This is inferred from the fact that the high grav- 
él deposits were not spread more directly westward into the trough 
of Buzzards Raye. As there are no indications that the present lower 
altitude of this broad trough was produced by erosion or slumping 
sirce the last glaciation, it is concluded that ice still occupied 
the trough and blocked westward drainage from the Cape Cod Bay lobe 
while the Sandwich moraine was deposited. 
There is, furthermore, some evidence to show that parts of the 
ice margin stood just east of the present eastern shore of the Ray 
during accumulation of these.gravels at Bournee A prominent tluff 
extends northeastward across Morument Beach, beginning near. the 
shore of Buzzards Bay at the southern erd of Phinneys Harbore West 
‘of it the lard is low-and sardy, but east of it lies an elongated, 
hummocky mound littered with boulders and underlain by till. North- 
east of this a similar bluff 40 to 60 feet high can be traced for a 
mile or more along the east side of C ounty Road northeast of Morument 
Beaches The material underlying the higher ground of this streteh is 
sand and gravel of the outwash fane Farther north near Bourne Vil- 
lage, remnants of the gravel fan drop off abruptly from surfaces ap- 
proximately 100 feet tolow sand plains only 10 to 25 feet above sea- 
level» Such an irregular but almost . continuous topog raptic break 
an not te attributed to erosional processes sirce the glaciatione 
Numerous large ‘toulders litter the surface of the gravel deposits 
