Journal, Том 12 |
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andesite Anfield animals Anodonta Apatite crystals Apatites of Cornwall basement beds Birkenhead bivalves bones Bootle Britain bronze Bunter C. E. MILES C. F. Webb Calcite Camborne Cannock Chase cave Chalybite Characters of Quartz Cheadle chlorite Clague clay deposit colour Council Crag crystals of Apatite Erth Beds exhibited feet Felspar Field Club Fluor formation forms fossil fossil contents fragments fresh water mussel Geological Society Geologist Gilbertite granite Hayle HERBERT JONES hexagonal prisms hill inch interesting J. M. Barber kaolin Keuper large number Librarian LIVERPOOL GEOLOGICAL ASSOCIATION locality marked meet mineral Nassa origin Orthoclase PATERSON pebbles Prescot quarry quartz R. W. B. Roberts resemble Richard Williams river Runcorn Sandstone sea water sections Semmons Session shell species specimens Stoneycroft Storey surface T. R. CONNELL Tean Tourmaline traces Transactions Trias Unio veins W. H. Miles W. H. Read William Brown Street
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Стр. 20 - ... present. Had there been any connection with northern seas or colder waters, it would be difficult to understand the entire absence of those forms of Pleurotoma (Bela) so abundant in the Boreal seas of the Crag period and the present age, as well as the equally characteristic bivalves, Astarte and Cyprina. Some conflict of opinion exists upon the depth of water in which the St. Erth clays were deposited. In a letter to "Nature...