Excursion to St. Leonards

W.J. Lewis Abbott
1921 Proceedings Geological Association  
a river flowing inland which a few hundred ya rds from the shore is still carryi ng water northwards. A very fine t ransverse section of the river va lley had recentl y been exposed in the face of the cliff, some s eventy feet deep. Upon the shoulders of the valley Aurignacian implements of a beautiful orange-brown colour occur. Stranded bog-oak trunks lie buried in the ancient mud, the grain of the wood being well preserved . Th ese ar e overlain by river deposits e nding in a thick matted bed
more » ... a thick matted bed of the roots of the wat er iris. E ast and west of the hills t he newer sunken Valley Forest Beds occur in a depressed posit ion ext ending southwards under the sea, and also some six or eight miles up the valleys. In all the wells sunk by the Directo r in the va lleys up t o the foot of the ridge at Ashburnham these beds are in grea t evidence. In the Austin valley at Crowhurst , for instance, they are over 35 feet .thick. The peat in the bed is forest-peat , a mass of treetrunks, leaves and twi gs in which one can ofte n see nuts, acorns a nd the elytra of beetl es. Bronze implements and a very fine d eer-antler hammer h ave been found in the peat. The recent destructio n of the cliffs has rev ealed a fine section of the mottled clays of the Fairlight Series. It could be seen that the oxidation of the iron had taken place down vertical crac ks' which were often continuous for 15 feet or more, and as the cliff face pa ssed th rough varying angl es to the h orizontal floor, the pattern changed from vertical lines to a pat ch-work. The unaltered clay is of a blu e colour, du e t o ferrous compounds, a nd it was upon the oxida tion of the iron that the brilli ant reds
doi:10.1016/s0016-7878(21)80030-9 fatcat:dxqyabtfq5f57k2pfz2tmy7xhy