. Bulletin of the Buffalo Society of Natural Sciences. Natural history; Science. 44 GEOLOGY OF ERIE COUNTY Quaker Road bridge where it forms a cascade across one branch and a rapids across the other. Yet the shales for twenty feet above contain huge concretions, though they are gray. The Rhinestreet is exposed along the lake shore southward from Sturgeon Point as far as Dibble Bay, where the layer of concretions marking the top of the formation crops out at water level. Its lower beds and its contact with the Cashaqua are to be seen in Pike creek east of the road. The whole formation can best
. Bulletin of the Buffalo Society of Natural Sciences. Natural history; Science. 44 GEOLOGY OF ERIE COUNTY Quaker Road bridge where it forms a cascade across one branch and a rapids across the other. Yet the shales for twenty feet above contain huge concretions, though they are gray. The Rhinestreet is exposed along the lake shore southward from Sturgeon Point as far as Dibble Bay, where the layer of concretions marking the top of the formation crops out at water level. Its lower beds and its contact with the Cashaqua are to be seen in Pike creek east of the road. The whole formation can best be seen in the gorge of Eighteen Mile creek. The lowest layers appear first at the top of the cliff below the railway bridges. The contact with the underlying Cashaqua is well shown at several points above and. F. Houghton, Photo. Fig. 19. Fault in Rhinestreet shale, below Erie Railway bridge, south branch of Eighteen Mile creek. below the old mill and bridge a mile above the railways. From this point the cliffs and bed of the stream are cut in this formation, the harder black layers causing rapids in the stream. The banks for much of its course are sheer cliffs. At a point three miles above the railways the stream forks. Above this junction in the gorge of the north branch rows of immense concretions appear at intervals in the cliff, and at several points the stream bed is cumbered with them. The surfaces of layers exposed in the stream bed exhibit numerous plant remains. At the old McKee's mill a layer of large concretions crosses the stream and forms a 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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