. Bulletin of the Buffalo Society of Natural Sciences. Natural history; Science. BUFFALO SOCIETY OF NATURAE SCIENCES 47 projects from the lake cliff just north of the mouth of Silver creek. This is unsatisfactory, however, as it is the only exposure of this layer in the county. Luther (p. 1024 Rept State Pal. 1902) describes a black layer four feet above a gray nodular layer and seems to consider this the top of the Angola. There is really nothing to distinguish one from the other. If the Angola and Hanover shales are in the horizon of the Hatch shales of Canandaigua, this name should be retai
. Bulletin of the Buffalo Society of Natural Sciences. Natural history; Science. BUFFALO SOCIETY OF NATURAE SCIENCES 47 projects from the lake cliff just north of the mouth of Silver creek. This is unsatisfactory, however, as it is the only exposure of this layer in the county. Luther (p. 1024 Rept State Pal. 1902) describes a black layer four feet above a gray nodular layer and seems to consider this the top of the Angola. There is really nothing to distinguish one from the other. If the Angola and Hanover shales are in the horizon of the Hatch shales of Canandaigua, this name should be F. Houghton, Photo. Fig. 21. Sandstone ledge in Angola shale, Griffin's Mills, Cazenovia creek. The type exposure of Angola shale is in the cliffs of Big Sister creek from the cemetery at Angola to Pontiac. There are numerous exposures along the south branch of Eighteen Mile creek from the Erie railroad bridge to a point well beyond the State Road, and in a small gully debouching into the creek just above the Erie railroad. A fine exposure begins at the junction of the two branches of Cazenovia creek and extends upward beyond Griffin's Mills. The beds in detail may be seen in a small gully running from the west into Cazenovia creek at the bridge south of 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 Buffalo Society of Natural Sciences. Buffalo, N. Y. : Buffalo Society of Natural Sciences
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