. Annual report of the Regents. New York State Museum; Science. 520 NEW YORK STAT© MUSEUM quartzose rock about one foot thick and resembling a sheet of sheared, quartz-porphyry, cuts the foliation of the gneisses and extends for about 100 yards. It is an extremely persistent sheet and is illustrated for a portion of its extent by fig. 3. There is little question that it was originally a pegmatite dike that is now sheared and pinched in with the gneisses. The minerals present are chiefly quartz, orthoclase and Sheared dike, supposed to be pegmatite, on northwestern shore, South bay
. Annual report of the Regents. New York State Museum; Science. 520 NEW YORK STAT© MUSEUM quartzose rock about one foot thick and resembling a sheet of sheared, quartz-porphyry, cuts the foliation of the gneisses and extends for about 100 yards. It is an extremely persistent sheet and is illustrated for a portion of its extent by fig. 3. There is little question that it was originally a pegmatite dike that is now sheared and pinched in with the gneisses. The minerals present are chiefly quartz, orthoclase and Sheared dike, supposed to be pegmatite, on northwestern shore, South bay, Dresden. Series 6. The glacial drift is wide spread over the town. It may be assumed to be generally present in the depressions. Recognizable striae were noted just south of Snody dock, with a bearing N 60 E. While the grooving is in the same general direction as those noted in Putnam, the ice had swung around more to the southwest in its advance at this point. The Champlain clays fill all the embayments and fringe the rocky ridges along the Lake Champlain front. They form ter- races similar to those noted in Putnam. No fossils were observed in them. Whitehall Topography. Whitehall contains two parts much contrasted in topography and geology. The western third of the town con- sists of the crystalline rocks, which form the eastern half of a high ridge, lying between Wood creek and the Met- tawee river, the inlets of Lake Champlain, on the east; and the southern prolongation of South bay on the west. The latter is a deep valley, and forms a striking topographical feature whose development is involved in the early drainage relations. It only concerns Whitehall in the portion filled by the South bay itself and in this the steep cliffs of Mt Diameter and the bluffs along the northwest front of Death rock give every reason for believ-. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appear
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