. Annals of the New York Academy of Sciences. Science. 10 ANNALS NEW YORK ACADEMY OF SCIENCES matter of deposition or erosion. An overloaded condition and the develop- ment of a flood plain was brought about in many of the New England streams at the end of the glacial period when a greater amount of detritus was provided than the stream could handle. The remnants of these flood plains are now to be seen in the terraces of the Connecticut, the Westfield, Merrimac and other New England streams. The cutting away of alluvial plains to form terraces has been studied here in detail and hardly any to
. Annals of the New York Academy of Sciences. Science. 10 ANNALS NEW YORK ACADEMY OF SCIENCES matter of deposition or erosion. An overloaded condition and the develop- ment of a flood plain was brought about in many of the New England streams at the end of the glacial period when a greater amount of detritus was provided than the stream could handle. The remnants of these flood plains are now to be seen in the terraces of the Connecticut, the Westfield, Merrimac and other New England streams. The cutting away of alluvial plains to form terraces has been studied here in detail and hardly any topic in physiography is more fascinating than this one. The Hudson River and Delaware River show similar features. In this connection there is the question of deltas built by streams. The teacher of physiography in this region can hardly cite any good deltas formed by streams entering the Atlantic Ocean at the present time, probably because the tides and currents are strong enough to pre- New England )cl_. 7~he Mac/*son f?/i/er at /-/arerstnz w. CP/e/cf sketch) Fig. 6.—View looking down the Hudson River at Haverstraw, New York The east side of the river is bordered by a portion of the New England upland ; the west side by the Palisades, which here swing around in a big arc. At their base may be seen a portion of the delta built into the estuary of the Hudson in glacial time. vent the accumulation of material, but he can cite several splendid examples built into the estuary of the Hudson River during glacial time, when its waters stood at a higher level than now. Croton Point is the remnant of a delta built by the Croton River; the clays that encourage the brick industry at Haverstraw come from a similar delta (Fig. 6), and finally there is the large delta built by the Mohawk River at the head of this estuary, whose flat surface is so well seen by one riding over it between Schenectady and Albany. Trenton, N. J., is built upon a similar delta and the very level coastal re
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