Bulletin - New York State Museum . rg these glacial gravels take on the form ofa delta terrace deeply dissected by the Wappinger creek, andhave a sharply marked ice contact slope on the western andnorthwestern margin of the deposit. The carriage road leadingfrom the village northeastward to the top of the terrace has thisice contact slope on the right hand till the road surmounts the100 foot contour line; thence the terrace is traceable along theriver edge on the left hand, showing clearly that the ice frontwas at this point on the east side of the river probably crossing 120 NEW YORK STATE MU
Bulletin - New York State Museum . rg these glacial gravels take on the form ofa delta terrace deeply dissected by the Wappinger creek, andhave a sharply marked ice contact slope on the western andnorthwestern margin of the deposit. The carriage road leadingfrom the village northeastward to the top of the terrace has thisice contact slope on the right hand till the road surmounts the100 foot contour line; thence the terrace is traceable along theriver edge on the left hand, showing clearly that the ice frontwas at this point on the east side of the river probably crossing 120 NEW YORK STATE MUSEUM to the west just above the month of Wappingor creek, and ex-tending: to the west of Xowbnrg as above indicated. It is worthy of remark Ihm-c that tlie United States Coast Snrveysonndings of the bottni ot iho Ilndson show a well marked ridgecrossing tlie Hudson from the north side of Shermans dockabout 1 mile north of the steamboat landing at Newburg in anortheasterly direction to the east shore. Over thi-s ridge the I. Fijf. 13 Sketch map of the bed of the Hudson near Newburg N. Y., showing- I arcrossin^r the bottom of the Hudson. Kif,aires indicate depth of Mater in fathoms. C( n-Btructed from Tnited States Coast Survey chart no. 371 depth of water is 6 fathoms. North and south of this bar thechannel falls ofl to depths of 7J on the north and 8 fathoms onthe south and these depths are maintained for several miles down the river. There is no reason for sui>posing that thisbar is a iHtiiiial feature of the development of the river, and itis explicable apparently on one of two hypotheses, either that itis due to a reef of rock less eroded than the rocks north andsouth by glarinl aclion in tlie channel or that it is a deposit made PART OF THE RHINEBECK QUADRANGLE N, Y STATE M USEUM BULLETIN 84 PLATE 6.
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectscience, bookyear1887
