. Bulletin of the British Museum (Natural History), Geology. 394 PALYNOLOGICAL STUDY OF face of the pit, though debris and overwash cover the exposure at one end so con- ceaUng the true horizontal extent of the once exposed face. Information that has been obtained from quantitative palynological analysis of samples from both the horizontal extent of the exposed face and from a vertical section of the deposit make 500. 450- 400. 350. 300. 250. c 0) i 200. •5 E Q CO x: Q. O E o c 150. 100. ~> 1 1 1 1 1 1 1 I 1 I 1 1 1 1 1 1 1 1 1 I 12 3 4 5 depth (metres) within plant bed Fig. 4. The cha
. Bulletin of the British Museum (Natural History), Geology. 394 PALYNOLOGICAL STUDY OF face of the pit, though debris and overwash cover the exposure at one end so con- ceaUng the true horizontal extent of the once exposed face. Information that has been obtained from quantitative palynological analysis of samples from both the horizontal extent of the exposed face and from a vertical section of the deposit make 500. 450- 400. 350. 300. 250. c 0) i 200. •5 E Q CO x: Q. O E o c 150. 100. ~> 1 1 1 1 1 1 1 I 1 I 1 1 1 1 1 1 1 1 1 I 12 3 4 5 depth (metres) within plant bed Fig. 4. The change in Absolute Pollen Frequency with depth at Kenslow Top pit. Count of the total number of pollen and spores were obtained from macerations of samples taken every 80 mm. through most of the section, though at the 3 metre depth, samples from every 10 mm. were used. Details are given in Section III of the way in which a standard volume of clay was macerated to produce preparations of comparable pollen and spore concentration. this site more informative than that at Bee's Nest pit. The larger plant bed at Kenslow Top pit suggests that more of the plant bearing clay was let down into this sink hole during the process of collapse. The plant bearing bed here is not only thicker but the upper part has a smaller proportion of pale grey clay, whilst the lower. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original British Museum (Natural History). London : BM(NH)
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