te Beaver Brook
met the drainage from Still River ice lobe in the valley north of
Shelter Rock, and as a result heavy deposits of stratified drift were
laid down. The peninsula-like mass of drift beyond the river north of
Shelter Rock appears from its form to have been built up as the delta
of southward and eastward-flowing streams; probably the drainage from
the hilltops united with streams coming down the two valleys. The
lobes of stratified drift extending from the ridge may have been built
first, and later the connecting ridge of gravel which forms the top of
the hill may have accumulated as additional material was washed in,
tying together the ridges of gravel along their western ends. The
mingling in this region of stratified drift of all grades of
coarseness indicates the union in the same basin of debris gathered
from several sources.

Between Danbury and New Milford no moraine crosses either the Rocky or
the Still valley, but the abundance of till which overspreads the
whole country indicates a slowly retreating glacier well loaded with
rock debris. The mounds of stratified drift scattered along the valley
doubtless represent the deltas of streams issuing from the ice front.
The waters of Rocky River were ponded until the outlet near Jerusalem
was uncovered and the disappearance of ice from the ravine below
allowed an escape to the Housatonic. Stratified drift is present in
greatest amount along the valleys of Still River and the west fork of
Rocky River, indicating that these were the two chief lines of
drainage. The uplands are practically without stratified drift.

Along the valley of the Housatonic, glacial material is chiefly in the
form of gravel terraces; they extend from Gaylordsville to New
Milford, in some places on one side only, in others on both sides of
the river. Part of these gravel benches are kame terraces, as shown by
their rolling tops and the ravine which separates the terrace from the
hillside; others may have been made by the river cutting through the
mantle of drift which was laid down in the period of land depression
at the time of glacial retreat,[15] or they may be a combination of the
two forms. In many places by swinging in its flood plain, the river
has cut into the terraces and left steep bluffs of gravel. The valley
of Womenshenuck Brook above Merwinsville contains heavy deposits of
stratified drift, indicating that this broad valley which extends from
Kent on the Housatonic to