and lie on this prominent - It is believed,therefore, 
that the bluff represents te line of contact between 
he receding edge of the obe and the fan of outwash 
gravels from the northeast ec in front of it. 
This ice-contact sloze a5 mile south of, and is 
almost parallel in trend to, «= b marking the western end 
of the Sandwich moraine half a @ e25t Tightingale Pond in the 
Sagamore quadrangle. This irregular slope may likewise represent 
anotner part or the margin of the Buzzards Bay lobe. If so,ice cov- 
ered the western third of the Sagamore quadrangle while the Sandwich 
moraine was accumulating and crevented the Cape Cod ‘Bay lobe from 
pushing farther westward. in-other words, the Buzzards Bay lobe had 
only receced about a mile or two from thes western side of the Buz- 
zards Ray moraine before the Cape Cod Bay lobe readvanced to form 
the Sandwich moraine. The interval of time between the depos enon 
of the two moraines was, therefore, not very great, 
Till Deposits or Ground Moraine 
Deposits formed during Depait aaah Buzzards - Bay ‘lobe across 
the trough inwhich the narrow fan described above was built were 
not completely obscured by cutnash ea ‘of the fan. Irregular 
knobs of till coated with bouicers protrude at a number of places a- 
oe the surface of remnarts of the plain. The. largest ‘and highest 
-chese forms. an elliptical srea of hummocky ground, a mile anda 
quarter in lon ai orthern end of which lies about a 
mide south Se) Bourne Bridge. The summits 
of mobs in e ut 160 feet above sealevel 
and 60 t remnants of gravel plain. 
Two smaller lated massed of till in the 
Pocasset qu x 
There are also numerous. 
along the s 
catches of lo ae) in which sandy till may be 
seen at a few scatte Ss These patches occur in thé midst 
of gravel areas. Suc af @s8 appear in the Pocasset quadrangle: 
at the. northeastern side iimmevs Harbor and around. the marshes 
along Back River, in the centrai rart of rocasset, at Patuisset, and 
souta of NOR Falnouth near things-Poré. -In the Woods Hole quadran- 
epi éerli hills between the south end 
nd Wes bor, all of Chappaquoit is- 
land, a morainic aah edo 2 in diameter. just west of 
crocker Pond, and low are theast end of West ee 
z 
e blocks.that lies half s 
re quadrangle and is com- 
re ions probably represents 
Ferbor. A broad, low nill 
mile north of Nightingale Pond 
have rough surfaces full 
“ave been farmed when irregular 
upon -the surface as the ice 
masses such as the one west of the 
rensile,hills south of Old Silver 
