. The geology of Nova Scotia, New Brunswick, and Prince Edward Island, or, Acadian geology [microform]. Geology; Geology, Stratigraphic; Paleontology; Geology, Economic; Géologie; Géologie stratigraphique; Paléontologie; Géologie économique. ^â [ ATLANTIC COAST or NOVA BCOTIA. 615 colour. In the coast metamorphic district of Nova Scotia, it appears in many and beautiful varieties. Talcose, chloritic, and hornblendic slates are comparatively rare in this district. 4. Quartz rock, or Quartztte, consisting of grains of flinty sand fused together, and with occasionally a little mica, occurs i
. The geology of Nova Scotia, New Brunswick, and Prince Edward Island, or, Acadian geology [microform]. Geology; Geology, Stratigraphic; Paleontology; Geology, Economic; Géologie; Géologie stratigraphique; Paléontologie; Géologie économique. ^â [ ATLANTIC COAST or NOVA BCOTIA. 615 colour. In the coast metamorphic district of Nova Scotia, it appears in many and beautiful varieties. Talcose, chloritic, and hornblendic slates are comparatively rare in this district. 4. Quartz rock, or Quartztte, consisting of grains of flinty sand fused together, and with occasionally a little mica, occurs in this series in very massive beds. 5. Clay slate, or argillaceous slate, abounds, and is usually in this district of gray and black colours, and varying very much in texture and hardness. It often presents indications of the original bedding in different planes from those of the lamination, the latter being an effect of causes acting at a time posterior to the original deposition, and, as already stated, pressure was probably the most efficient of these causes. Between these rocks there are many intermediate forms. Granite often passes by imperceptible gradations into gneissâthis into mica slateâthis into quartziteâand this into coarse or flinty clay slates. There appears every reason to believe that all these rocks, except the granite, are merely variously metamorphosed forms of common sand- stones and clays. The Lower Silurian rocks form a continuous belt along the Atlantic coast of the province, narrow at its north-eastern extremity, and at- taining its greatest development in the western counties. Its southern or coast side has a general direction of S. 68° W.; its inland side, though presenting some broad undulations, has a general direction of about S. 80° W. Its extreme breadth at Cape Canseau, its north- eastern extremity, where it is bounded on one side by the ocean, and on the other by Chedabucto Bay, is only about eight miles. In its extension we
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Keywords: ., boo, bookcentury1800, booksubjectgeology, booksubjectpaleontology
