The Geology of Mt. Mansfield State ForestChristman, Robert A. (Robert Adam)
Science
The Geology of Mt. Mansfield State Forest
Christman, Robert A. (Robert Adam)
Geology -- Vermont -- Mount Mansfield State Forest
Between the Chin and Mount Mansfield Hotel are a number of interesting
trails. The Subway and Canyon trail on the west side of the mountain
follow, for part of the way, joints in the rock which have been enlarged
by the downhill slippage of the western block. Figure 11 shows the
nature of one of these passageways. On the east side of the mountain,
the Cliff trail passes through a similar joint called “Wall Street.” The
Cave of the Winds, reached by a trail just north of the Lower Lip, has
formed along another north-south joint. The block which has moved
downhill has tilted into the mountain and rubble has filled the gap at
the top to form the cave. Figure 12 shows the appearance of the cave as
seen from the eastern slope of the Chin. This photograph shows smaller
joints on the Chin which have just begun to be enlarged by slippage of
the downhill block. It is possible that some of these open joints date
back and partially owe their origin to glacial erosive action.
Drift Rock which is located along the Long Trail south of the Upper Lip
has already been described as an erratic boulder moved by the glacier.
The glacial striae may be seen in the bedrock northwest of the boulders.
Garnet crystals are very abundant in these boulders and specimens of the
small red garnets may be obtained here.
The Nose is easily reached along the trail from Mount Mansfield Hotel.
From the summit the view is excellent to the south towards Camels Hump,
which is one of the prominent peaks of the Green Mountain range. The
mica-albite-quartz schist on top of the Nose has many small folds and
crenulations.
South of the Forehead along the Long Trail, cliffs of an albite-rich
variety of the mica-albite-quartz schist form obstacles which have been
surmounted cleverly by the Green Mountain trail-markers.
In the southern part of Mount Mansfield State Forest the Long Trail
passes through Nebraska Notch in the vicinity of Taylor Lodge. This
notch also was formed by the erosive action of an ancient river that
flowed across the mountain at this point, but which has long since been
abandoned.
[Illustration: The cliffs at Smugglers Notch as seen looking south
from the west wall of the Notch.]
FOOTNOTES
[1]Rocks are classified as being either igneous, sedimentary, or
metamorphic. _Igneous_ rocks form by the solidification of molten
material; _sedimentary_ rocks form by the accumulation of sediments
derived from older rocks; and _metamorphic_ rocks form by
recrystallization of older rocks under conditions of high
temperatures and pressures.
[Illustration: MOUNT MANSFIELD STATE FOREST]
Transcriber’s Notes
—Silently corrected a few typos.
—Retained publication information from the printed edition: this eBook
is public-domain in the country of publication.
—In the text versions only, text in italics is delimited by
_underscores_.
Public-domain text, read in full here on John Shaqi.
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