Geological Magazine, Том 10Henry Woodward Cambridge University Press, 1873 |
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Ammonites appear Arthropleura augite base basin beds belong bones Boulder-clay British Cambrian carbonate Carboniferous Chalk character Clay coal Coal-measures containing Coprolites Cretaceous Crustacea crystals denudation deposits described Devonian district drift elevation Eocene Eurypterus evidence existence fault fauna feet flint Foraminifera formation fossils genera genus Geol GEOLOGICAL MAGAZINE Geological Society Geological Survey geologists glacial glaciers Graptolites gravel Greensand Halonia Hill inch Journ lakes Lepidodendron Limestone Llandeilo lode Lough Derg Lower Silurian marine mass matter Memoir miles mineral Miocene mountain Murchison observed occur Old Red Old Red Sandstone Oolite origin Palæozoic Paleozoic paper period Permian plates portion present probably Prof Pteraspis Red Sandstone referred remains remarkable river rocks sand Sedgwick shales shells side siliceous Silurian species specimens stone strata structure surface Tertiary thickness tion Upper valley