horizontally, the ends of many masses 
form. The horizontal pressure which 
have been exerted at or near the ‘suri 
layers several feet below the clumps 
Such pressure may have resulted 
at the top of a stranded ice block. Fers 
Qu. 
ravidly-fluctuating air temperatures. is 
temperature far below freezing to aaa it svreads outwar a= 
other possible explanation is that streams on the outwash olein un- 
dercut the edges of these ice blocks, causing lerge masses of ice to 
fall and be dragged short distances in a stream channel. Churks of 
So 
stidiefrom the .ice -might).drop directly onto the gravel floor and. be- 
come squeezed into place under this ice. 
Subeeriel Furrows 
The surface of the Mashpee pitted ulair is 
by kettle-holes, but also by long furrows which 
the plain -and extend to its ourer edrce. fe 
miles long. The lower parts of the larg 
by small streams such as Coonamessett Rive 
Falmouth quadrangle, but these rivers are 
’ furrows today. . The lower end of €ach is floo 
has thus formed such long, narrow bays G 
* Bowens Fond, and Eel River on the south sg: 
Erosion rather than Gepostelom teres 
inasmuch as they are actually cut into th 
- the plein. : The truncated edges of gr 
sures on the walls of furrows. Two 
in 1939 in- roadcuts a quarter of a 
and a quarter of a mile southeast of Rou 
furrows have the form of stream-cut val 
narrow, shallow, V-shaped cut. Down vel 8 
increase to 1,000 feet in width end some 25 £ 
floors of the furrows are broad and sx LOOT  § 
taries enter the main valleys along their sides, 
a stunted dendritic pattern. like the veins of < narrow leaf. 
t lle) orientation of 
urrows 
one! of 
9 seen in expo- 
res were s¢éen 
oy 
ee eee th 
ach one heads ina 
ey, & 
The close spacing of the furrows anc subperae 
ali.their main: courses are surprising. Some adwacent furrows ere so 
close where they enter Nantucket and Vireverd Sounds oes the Slac= 
topped remnants between them are rarely as much as one half e mile 
Soroad. All of them are oriented within 20° of seuth, some trending 
he 
southeast and others southwest. Those near the western edce of % 
plain are nearly parallel to the Bu 5 i fre an are 
ag 
rangement of valleys is not like pattern 
formed by’ so many streams in New En 1 erefore, Aeeumiees 
some special explanation, 
What sort of erosion might carve such velie 
are not now occupied by streams, presenit-d 
edequate to account for these forms. AS %& h 
rectly connected with moraine areas,and es the peat 
