The flow of time in the Connecticut valley : $b geological imprintsBain, George W. (George William)
Science
The flow of time in the Connecticut valley : $b geological imprints
Bain, George W. (George William)
Geology -- Connecticut River Valley
Mount Sugarloaf does not offer Mount Lincoln’s retreat from crowds nor
Mount Toby’s expansive landscape, but it is accessible, and it provides
an unrivaled view of the valley between South Deerfield and the Holyoke
Range. Its red sandstones and conglomerates rise almost sheer for 500
feet above the Sunderland-South Deerfield road. On the northwest and
southeast sides the cliffs are determined by nearly vertical joint
planes. During the Ice Age, the southward-moving glacier plucked away
the loosely attached blocks facing the South Deerfield and Sunderland
sections of the lowland, leaving Sugarloaf as a remnant between the
joint surfaces.
The great bites which the meandering Connecticut River has taken out of
the lowland are visible east of Sunderland village and south towards
Hatfield. Each arc in the edge of the scalloped flood plain is the
extremity of a meander loop which the wandering river carved in its bank
and then abandoned by breaking through the narrow base or tongue, as it
did at the Northampton ox-bow.
An area of low, rolling, sandy hills extends through the pine woods for
a mile southward from South Deerfield. The hills are dunes which formed
when the Connecticut was picking its channel across the newly exposed
and barren bed of glacial Lake Hadley.
[Illustration: Fig. 22. _Meander scarps form a margin to the
Connecticut River flood plain at Sunderland._]
The panorama from the west side of Mount Sugarloaf centers about the
deep gorge of the Deerfield River. The top of the gorge widens out into
a broad strath and affords a glimpse of the more remote upland. The
river, emerging from this canyon during post-glacial time, built a huge
delta into glacial Lake Hadley, and much of the delta still remains in
the terrace which is utilized by the Boston and Maine Railroad as it
descends into Greenfield.
_Turners Falls_
Rushing water has a fascination which was frankly recognized by the
highway engineers who made the parking place facing the Connecticut
where Route 2 passes along the north side of Turners Falls. Here the
river drops over a series of sandstone ledges into a deep and narrow
channel at the east base of the trap ridge. Waterfalls are not common in
rivers flowing through lowlands; they indicate disturbances of normal
stream development and sometimes change in course.
Public-domain text, read in full here on John Shaqi.
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