. 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 m 200 THE CARBONIFEROUS BY8TEH. usual fossils and resting on coal. This is a case precisely similar to that which terminates our 23d group, except that in this last case the conditions favourable to the formation of bituminous limestone probably continued longer. The next is another barren group of chocolate and gray shales, with gray sandstone oc
. 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 m 200 THE CARBONIFEROUS BY8TEH. usual fossils and resting on coal. This is a case precisely similar to that which terminates our 23d group, except that in this last case the conditions favourable to the formation of bituminous limestone probably continued longer. The next is another barren group of chocolate and gray shales, with gray sandstone occasionally rippled, and with fragments of drift-wood. This is the filling up of the shell-fish-inhabited waters, in the manner already so frequently noticed. In one of its beds I observed rain- marks, and a series of footprints, probably of a small reptile; and it was here that Mr Marsh found the vertebra; of the largest reptile yet discovered at the Joggins, Eosaurus Acadianus. Subdivision XXVII. is another succession of underclays and small coaly layers. It is remarkable for the very pyritous character of many of its beds, an indication of the action of sea-water. The most remarkable part of this group is that represented in Fig. 41. It Fig. 41.âSection from the lower part of Subdivision 7 6 5 1. Shale. 2. Slialy coal, 1 foot. 3. Undcrclay with rootlets, 1 foot 2 inches. 4. Gray sandstone passing downwards into shale, 3 feet. Erect tree with Stigmarla roots («) on the coal. 6. Coal, 1 Inch. 6. Underclay with roots, 10 Inches. 7. Gray sandstone, 1 foot 6 inches. Stigmarla rootlets continued from tho bed above; erect Calamitet. 8. Gray shale, with pyrites. Flattened plants. includes a bed of erect Calamites and an erect tree with distinct Stig- marla roots. The underclays are here so crowded on the erect plants, that the rootlets of one underclay pass downward among the erect Calamites, and the rootlets of another paps beside and within the cast of the
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Keywords: ., boo, bookcentury1800, booksubjectgeology, booksubjectpaleontology
