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Bembridge Beds : ウィキペディア英語版 | Bembridge Beds
The Bembridge Beds are strata forming part of the fluvio-marine series of deposits of Oligocene age, in the Isle of Wight and Hampshire, England. They lie between the Hamstead beds above and the Osborne beds below. The Bembridge marls, freshwater, estuarine and marine clays and marls (70–120 ft.) rest upon the Bembridge limestone, a freshwater pool deposit (15–25 ft.), with large land snails (''Amphidromus'' and ''Helix''), freshwater snails (''Planorbis'', ''Lymnaea''), and the fruits of ''Chara''. The marls contain, besides the freshwater ''Lymnaea'' and ''Unio'', such forms as ''Meretrix'', ''Ostrea'', and ''Melanopsis''. A thin calcareous sandy layer in this division has yielded the remains of many insects and leaf fossils. ==References== This cites "Geology of the Isle of Wight," ''Mem. Geol. Survey,'' 2nd ed. 1889.
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