. Bulletin of the British Museum (Natural History) Geology Supplement. 22 MESOZOIC AND CAINOZOIC DINOFLAGELLATE CYSTS Studland Bay. One of the most westerly outcrops of the London Clay is found at Studland Bay in Dorset, where conditions in the Lower Eocene fluctuated between marine and fresh-water, being very close to, and at times marking, the shoreline of the London Clay sea. As with all cliff sections of the London Clay, difficulty is experienced in collecting because of slumping. This obscures most of the London Clay but fortunately both lower and upper junctions with the Reading and Bags
. Bulletin of the British Museum (Natural History) Geology Supplement. 22 MESOZOIC AND CAINOZOIC DINOFLAGELLATE CYSTS Studland Bay. One of the most westerly outcrops of the London Clay is found at Studland Bay in Dorset, where conditions in the Lower Eocene fluctuated between marine and fresh-water, being very close to, and at times marking, the shoreline of the London Clay sea. As with all cliff sections of the London Clay, difficulty is experienced in collecting because of slumping. This obscures most of the London Clay but fortunately both lower and upper junctions with the Reading and Bagshot Beds are exposed. Because of the poor exposures, samples could only be taken haphazardly, three (ST. 1-3) being collected within 10 feet of the base, and one (ST. 4) from only three feet below the junction with the Bagshot Beds. The London Clay at Studland is, at the base, an arenaceous yellow brown clay passing upwards into a friable yellow argillaceous sand ; the succeeding Bagshot Beds are almost pure quartz sands, bright yellow in colour and partly consolidated. Isle of Wight. The exposures of London Clay in the Isle of Wight at Alum Bay and Whitecliff Bay are of importance because they give the only continuous exposures through the whole London Clay, from the junction with the Reading Beds to the base of the Bagshot Sands. The dip of the beds is almost vertical and they strike at right angles to the exposure, thus providing comparatively easy conditions for collecting. The main difficulty is slumping or slipping, which is a common occurrence in the Alum Bay section, less frequent at Whitecliff. Only the White- cliff section has been studied because it is less affected by slumping and the junction of the London Clay and Bagshot Beds can be more precisely placed. Sheppey. h Studland Whitecliff Fig. 6. Map of South-east England, showing in black the outcrop of the London Clay. The localities from which samples were collected are shown by the Please note that thes
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