es One 
in the region where the two moraines join, northrest of the apex of 
the Mashpee pitted plain. This area of overlap is as ir ce 
knobby as ary parts of either moraine thet 1 
The morainic topography extends northwestward 4 
Pond west of the Cape Cod Canale At this clunt 
a mile broad, but where the two moraines actual 
miles broade 
Many granite boulders are scattered over the surface of this 
western end-of the Sandwich moraine. There ere several clusters or 
such blocks along the transmission-line swath on either side of the 
Canal and at the southern edge of the “Guedrangles Th go 
est block is Sacrifice ‘Rock, half a of z i112 
fire tower near Bournedale. It has spiit into several huge slabs 
that-lie against one another. The dimensions of the origirel single 
tlock were at least 30 by 20 by 15 feet. Cuts made ty a tractor 
along the transmission::,lines and _ adjacent ‘cack roads have exposed 
sticky, tan to brown till with abundant buried blocks. Several grav- 
el pits located in this area of moraimic overlap disclose that strat- 
ified materials. also constitute part of the desositse On Canal View 
Road, both. north and south of the boundary tween the Pocasset and 
the Sagamore quedrangles,there are coarse gravel that 
includes waterworn-boulders up to k,....When the Cape 
e@ 
this area of over- 
reat Herring Pond, 
Cod: Canal was excavated through a lov portion 
lap, and along the natural drainage lire s : 
-it exposed sandy till with-huge emtedded blocks ore 
riying bedded sand 
‘and gravel. As in the Sandwich moraine to the east and the Buzsards 
Bay, moraine to the south, this till’ wes spread over earlier giacio- 
fluvial deposits, and some glacio-fluviai deposition accompanied its 
.formations 
Certain types of ree found ix 
1 the Buzzards Bay moraine are seen in 
areas. - These are chiefly chips of black 
gneiss, red arkose, and laminated qua 
occurrence of these pebbles is a ra 
Kendrick Road at the north edge of the F 
Ographic break along ‘this line,with higher 
to.-the south, adds emphasis to the ic 
limit. of material put in place by the i 
Sandwich morainee As this belt of what 
tension of the Sandwich moraine cuts ac 
Bay moraine and extends northwestward o& 
Cod Bay lobe must have pushed forward vhe ne 
raine after the ice of the Buzzards Ray 3 ed melted back from 
the -position it occupied while the Buzzards y¥ moraine wes “pailts 
(See page 43 for further consideration of the tin e relations between 
advances of those lobes of icee) 
Identification of rock types among the 
this area.of overlap indicates certain minor 
ences in the composition of the till th 
farther to the east or south. The fou 
western Ber emer Yhe Sandwich moraine indi 
