. Bulletin - New York State Museum. Science. PLEISTOCENE GEOLOGY OF NASSAU CO. AND BOROTJGH OF QUEENS 629 A small exposure of a bed of till also existed in the summer of 1900 near Kocky point at the northwestern extremity of the so-called Center island in Oyster bay. The annexed sketches illustrate the varying conditions seen at this locality. In fig. 3 the beds in the bluff west of Rocky point show again the transition from till to stratified beds. A detail of the western part of the sec- tion is given in fig. 4, showing loesslike sands at top, inclosing boulders, beneath which comes a bed of
. Bulletin - New York State Museum. Science. PLEISTOCENE GEOLOGY OF NASSAU CO. AND BOROTJGH OF QUEENS 629 A small exposure of a bed of till also existed in the summer of 1900 near Kocky point at the northwestern extremity of the so-called Center island in Oyster bay. The annexed sketches illustrate the varying conditions seen at this locality. In fig. 3 the beds in the bluff west of Rocky point show again the transition from till to stratified beds. A detail of the western part of the sec- tion is given in fig. 4, showing loesslike sands at top, inclosing boulders, beneath which comes a bed of gravelly sand from 6 to 10 feet thick, Avith pockets of clay. A gravell}^ till 10 feet thick underlies this bed, below which again appear compound gravels and sand. Near the headland underlying blue clays rise up in a knob, with sands cut oS on the east, the whole being overlain uncon- formably by till with boulders up to 2 feet in diameter. At tlie headland on the southwest, the sections shown in fig. 5 and 6 exhibit an earthy gravel (as in fig. 6) evidently a phase of the till bed or the till as in fig. 5, resting unconformably on tilted yellow sands, which in turn repose on disturbed Fig. 2 Southwestern face of Barker point. A, cross-bedded ferruginous sands; B, the till bed 5 or 6 feet thick, resting unconformably on the sands, and overlain by sands; C, sands; D, surface tiil and boulders, the fine materials being largely rearranged sands. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original New York State Museum; New York State Museum. Albany : New York State Education Dept
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectscience, bookyear1887
