The chronology, palaeogeography and archaeological significance of the marine quaternary record of the West Sussex Coastal Plain, Southern England, U.K.

Quaternary Science Reviews

Volumn 16, Issue 10, 1997, Pages 1227-1252

  Bates, Martin R ^a   Parfitt, Simon A ^b   Roberts, Mark B ^a  

^a UNIVERSITY COLLEGE LONDON   (United Kingdom)

^b DEPARTMENT OF LIFE SCIENCES   (United Kingdom)

Author keywords

[No Author keywords available]

Indexed keywords

HUMAN ACTIVITY; MARINE SEDIMENT; QUATERNARY SEDIMENT;

ENGLAND; UK; WEST SUSSEX;

EID: 0031411720     PISSN: 02773791     EISSN: None     Source Type: Journal    
DOI: 10.1016/S0277-3791(96)00119-9     Document Type: Article

References (118)

1. Allen, L.G. and Gibbard, P.L. (1993) Pleistocene evolution of the Solent River of southern England. Quaternary Science Reviews 12, 503-528.
2. Allen, L.G., Gibbard, P.L., Petit, M.E., Preece, R.C. and Robinson, J.E. (1996) Late Pleistocene interglacial deposits at Pennington Marshes, Lymington, Hampshire, Southern England. Proceedings of the Geologists' Association 107, 39-50.
3. Antoine, P. (1990) Chronostratigraphie et environnement du Paléolithique du bassin de la Somme. Publications du CERP 2.
4. ApSimon, A.M., Gamble, C.S. and Shackley, M.L. (1977) Pleistocene raised beaches on Ports Down, Hampshire. Proceedings of the Hampshire Field Club and Archaeological Society 33, 17-32.
5. Ashton, N.M., Bowen, D.Q., Holman, J.A., Hunt, C.O., Irving, B.G., Kemp, R.A., Lewis, S.G., McNabb, J., Parfitt, S.A. and Seddon, M.B. (1994) Excavations at the Lower Palaeolithic site at East Farm, Barnham, Suffolk, 1989-92. Journal of the Geological Society of London 151, 599-605.
6. Austin, L. (1994) The life and death of a Boxgrove biface. In: Ashton, N. and David, A. (eds), Stories in Stone, pp. 119-126. Lithic Studies Society Occasional Paper No. 4.
7. Balescu, S., Packman, S.C., Wintle, A.G. and Grun, R. (1992) Thermoluminescence dating of the Middle Pleistocene Raised Beach of Sangatte (Northern France). Quaternary Research 37, 390-396.
8. Bates, M.R. (1990) Amino acid geochronology of Quaternary non-marine molluses in North Western France. Unpublished Ph.D. thesis, University of London.
9. Bates, M.R. (1993) Quaternary aminostratigraphy in Northwestern France. Quaternary Science Reviews 12, 793-809.
10. Bellamy, A.G. (1995) Extension of the British landmass: evidence from shelf sediment bodies in the English Channel. In: Preece, R.C. (ed.), Island Britain: A Quaternary Perspective, pp. 47-62. Geological Society Special Publication No. 96.
11. Bergman, C.A. and Roberts, M.B. (1988) Flaking technology at the Acheulian site of Boxgrove, West Sussex (England). Revue Archaeologique de Picardie, 1-2 (numero special), 105-113.
12. Bergman, C.A., Roberts, M.B., Colcutt, S.N. and Barlow, P. (1990) Refitting and spatial analysis of artefacts from Quarry 2 at the Middle Pleistocene Acheulian site of Boxgrove, West Sussex. England. In: Czielsa, E., Eickhoff, S., Arls, N. and Winter, D. (eds), The Big Puzzle, pp. 256-282. Holos, Bonn.
13. Berry, F.G. and Shephard-Thorn, E.R. (1982) Geological Notes and Local Details for 1:10000 sheets SZ 98 NW, NE, SW and SE, SZ 99 NW and NE (West Sussex Coastal Plain between Selsey and Bognor). Institute of Geological Sciences, Keyworth.
14. Bone, A.E. (1996) The shaping of the Selsey coastline: a review of the geomorphology, archaeology and history. Tertiary Research 16, 5-14.
15. Bone, D.A. and Tracey, S. (1996) Aerial photography and geological mapping of Bracklesham Bay, West Sussex. Tertiary Research 16, 25-40.
16. Bowen, D.Q. (1994) Late Cenozoic Wales and South-West England. Proceedings of the Ussher Society 8, 209-213.
17. Bowen, D.Q., Sykes, G.A., Reeves, A., Miller, G.H., Andrews, J.T., Brew, J.S. and Hare, P.E. (1985) Amino acid geochronology of raised beaches in South West Britain. Quaternary Science Reviews 4, 279-318.
18. Bowen, D.Q. and Sykes, G.A. (1988) Correlation of marine events and glaciations on the northeast Atlantic margins. Philosophical Transactions of the Royal Society of London Series B318, 619-635.
19. Bowen, D.Q., Hughes, S., Sykes, G.A. and Miller, G.H. (1989) Land-sea correlations in the Pleistocene based on isoleucine epimerization in non-marine molluscs. Nature 340, 49-51.
20. Bowen, D.Q. and Sykes, G.A. (1994) How old is 'Boxgrove Man'. Nature 371, 751.
21. Bridgland, D.R. (1994a) The Quaternary of the Thames. Chapman and Hall, London, 446 pp.
22. Bridgland, D.R. (1994b) Dating of Lower Palaeolithic industries within the framework of the Lower Thames terrace sequence. In: Ashton, N. and David, A. (eds), Stories in Stone. pp. 28-40. Lithics Studies Society Occasional Papers 4.
23. Bridgland, D.R. (1996) Quaternary river terrace deposits as a framework for the Lower Palaeolithic record. In: Gamble, C.S. and Lawson, A.J. (eds). The English Palaeolithic Reviewed, pp. 28-39. Trust for Wessex Archaeology Ltd, Salisbury.
24. Bridgland, D.R. (in press) Analysis of the raised beach gravel deposit at Boxgrove and related sites. In: Roberts, M.B. and Parfitt, S.A. (eds), The Middle Pleistocene Hominid Site at ARC Eartham Quarry, Boxgrove, West Sussex, U.K. English Heritage Monograph Series, London.
25. Bristow, C.R. and Wyatt, R.J. (1983) Geological Notes and Local Details for 1:10000 sheets TQ 01 NW, NE, SW and SE (Pulborough and Storrington). Institute of Geological Sciences, Keyworth.
26. Brown, R.C., Gilbertson, D.D., Green, C.P. and Keen, D.H. (1975) Stratigraphy and environmental significance of the Pleistocene deposits at Stone, Hampshire, Proceedings of the Geologists' Association 86, 349-365.
27. Calkin, J.B. (1934) Implements from the higher raised beaches of Sussex. Proceedings of the Prehistoric Society of East Anglia 7, 333-347.
28. Chapman, F. (1900) The raised beach and rubble-drift at Aldrington, between Hove and Portslade-By-Sea, Sussex. With notes on the microzoa. Proceedings of the Geologists' Association 16, 259-270.
29. Conway, B., McNabb, J. and Ashton, N. (1996) Excavations at Barnfield Pit, Swanscombe, 1968-72. British Museum Occasional Paper 94. British Museum, London.
30. Currant, A.P. (1989) The Quaternary origins of the modern British mammal fauna. Biological Journal of the Linnean Society 38, 23-30.
31. Curwen, E.C. (1925) Palaeolith from a raised beach in Sussex. Antiquaries Journal 5, 72-73.
32. Curwen, E.C. (1946) A hand-axe from the Chichester Gravels. Proceedings of the Prehistoric Society 12, 172-173.
33. Curwen. E.C. (1954) The Archaeology of Sussex. Methuen, London.
34. Davies, K.H. (1984) The aminostratigraphy of British Pleistocene beach deposits. Ph.D. thesis, University of Wales, Aberystwyth.
35. Davies, K.H. and Keen, D.H. (1985) The age of Pleistocene marine deposits at Portland, Dorset. Proceedings of the Geologists' Association 96, 217-225.
36. Dixon, F. (1850). The Geology and Fossils of the Tertiary and Cretaceous Formations of Sussex, London.
37. Everard, C.E. (1954) The Solent River: a geomorphological study. Transactions of the Institute of British Geographers 20, 41-58.
38. Fowler, J. (1929) Palaeoliths found at Slindon. Sussex Archaeological Collections 70, 197-200.
39. Fowler, J. (1931) Palaeolith from West Sussex. Sussex Archaeological Collections 72, 158-159.
40. Fowler, R. (1932) The 'One Hundred Foot' raised beach between Arundel and Chichester, Sussex. Quarterly Journal of the Geological Society of London 88, 84-99.
41. Gamble, C S. (1995) The earliest occupation of Europe: the environmental background. In: Roebroeks, W. and Kolfschoten, T. van (eds), The Earliest Occupation of Europe: Proceedings of the European Science Foundation Workshop at Tautavel, France, 1993, pp. 279-296. University of Leiden, Leiden.
42. Gamble, C.S. (1996) Hominid behavior in the Middle Pleistocene; an English Perspective. In: Gamble, C.S. and Lawson, A.J. (eds), The English Palaeolithic Reviewed, pp. 63-71. Trust for Wessex Archaeology Ltd, Salisbury.
43. Gamble, C.S. and ApSimon, A. (1986) 'Red Barns', Porchester, In: Colcutt, S.N. (ed.), The Palaeolithic of Britain and its Nearest Neighbours, pp. 8-12. University of Sheffield Department of Archaeology Publications.
44. Gibbard, P.L. (1988) The history of the great northwest European rivers during the past three million years. Philosophical Transactions of the Royal Society of London B38, 559-602.
45. Gibbard, P.L. (1995) The formation of the Strait of Dover. In: Preece, R.C. (ed.), Island Britain: A Quaternary Perspective, pp. 15-26. Geological Society Special Publication No. 96.
46. Godwin-Austin, R. (1857) On the Newer Tertiary deposits of the Sussex Coast. Quarterly Journal of the Geological Society of London 13, 40-72.
47. Green, C.P., Coope, G.R., Currant, A.P., Holyoak, D.T., Ivanovich, R.M., Jones, R.L., Keen, D.H., McGregor, D.F.M. and Robinson, J.E. (1984) Evidence of two temperate episodes in late Pleistocene deposits at Marsworth, U.K., Nature 309, 778-781.
48. Grinsell, L.V. (1929) The Lower and Middle Palaeolithic periods in Sussex. Sussex Archaeological Collections 70, 172-182.
49. Hamblin, R.J.O., Crosby, A., Balson, P.S., Jones, S.M., Chadwick, R.A., Penn, I.E. and Arthur, M.J. (1992) United Kingdom Offshore Regional Report: The Geology of the English Channel. HMSO for the British Geological Survey, London, 106 pp.
50. Hedberg, H.D. (1976) International Stratigraphic Guide. International Sub-commission of Stratigraphic Classification. Wiley, New York.
51. Heron-Allen, E. (1911) Selsey Bill: Historic and Prehistoric. Duckworth, London.
52. Hinton, M.A.C. (1907) On the existence of the alpine snow vole (Microtus nivalis Martin) in Britain during Pleistocene times. Proceedings of the Geologists' Association 20, 39-58.
53. Hinton, M.A.C. (1926) Monograph of the Voles and Lemmings (Microtinae). Living and Extinct. 1. British Museum (Natural History), London.
54. Hodgson, J.M. (1964) The low-level Pleistocene marine sands and gravels of the West Sussex Coastal Plain. Proceedings of the Geologists' Association 75, 547-562.
55. Hodgson, J.M. (1967) Soils of the West Sussex Coastal Plain. Bulletin of the Soil Survey of Great Britain, Number 3.
56. Keen, D.H. (1980) The environment of deposition of South Hampshire plateau gravels. Proceedings of the Hampshire Field Club and Archaeological Society 36, 15-24.
57. Keen, D.H. (1990) Significance of the record provided by Pleistocene fluvial deposits and their included mollusc faunas for palaeoenvironment reconstruction and stratigraphy: case studies from the English Midlands. Palaeogeography, Palaeoclimatology, Palaeoecology 80, 25-34.
58. Keen, D.H. (1993) Raised marine deposits. In: Keen, D.H. (ed.), The Quaternary of Jersey. Field Guide, pp. 12-17. Quaternary Research Association, Cambridge.
59. Keen, D.H. (1995) Raised beaches and sea-levels in the English Channel in the Middle and Late Pleistocene: problems of interpretation and implications for the isolation of the British Isles. In: Preece, R.C. (ed.), Island Britain: A Quaternary Perspective, pp. 63-74. Geological Society Special Publication No. 96.
60. Kellaway, G.A., Redding, J.K., Shephard-Thorn, E.R. and Destombes, J.P. (1975) The Quaternary history of the English Channel. Philosophical Transactions of the Royal Society of London A279, 189-218.
61. Kolfschoten, T. (1990) The evolution of the mammal fauna in the Netherlands and the Middle Rhine area (West Germany) during the late Middle Pleistocene. Mededelingen Rijks Geologische Dienst. 43, 1-69.
62. Kolfschoten, T. van and Turner, E. (1996) Early Middle Pleistocene mammalian faunas from Kärlich and Miesenheim I and their biostratigraphical implications. In: Turner, C. (ed.), The Early Middle Pleistocene in Europe, pp. 227-254. A.A. Balkema, Rotterdam.
63. Lovell, J.H. and Nancarrow, P.H.A. (1983) The Sand and Gravel Resources of the Country around Chichester and North of Bognor Regis, Sussex. Description of 1:25000 resource sheet SU 80 and 90. Mineral Assessments Reports, Institute of Geological Science 138.
64. Martin, E.A. (1937) A section in the Woolwich and Reading Beds, and in the '15-foot' raised beach at Worthing, Sussex. Proceedings of the Geologists' Association 49, 198-212.
65. Meijer, T. and Preece, R.C. (1995) Malacological evidence relating to the insularity of the British Isles during the Quaternary. In: Preece, R.C. (ed.), Island Britain: A Quaternary Perspective, pp. 89-110. Geological Society Special Publication No. 96.
66. Miller, G.H., Hollin, J.T. and Andrews, J.T. (1979) Aminostratigraphy of UK Pleistocene deposits. Nature 281, 539-541.
67. Miller, G.H. and Mangerud, J. (1985) Aminostratigraphy of European marine interglacial deposits. Quaternary Science Reviews 4, 215-278.
68. Oakley, K.P. and Curwen, E.G. (1937) The relation of the Coombe Rock to the 135-ft raised beach at Slindon, Sussex. Proceedings of the Geologists' Association 49, 317-323.
69. Palmer, L.S. and Cooke, J.H. (1923) The Pleistocene deposits of the Portsmouth district and their relation to Early Man. Proceedings of the Geologists' Association 34, 253-282.
70. Parks, D.A. and Rendell, H.M. (1992) TL Geochronology of brickearth from South East England. Quaternary Science Reviews 11, 7-12.
71. Preece, R.C. and Scourse, J.D. (1987) Pleistocene sea-level history in the Bembridge area of the Isle of Wight. In: Barber, K.E. (ed.), Field Guide to the Quaternary of Wessex and the Isle of Wight, pp. 136-149. Quaternary Research Association, Cambridge.
72. Preece, R.C., Scourse, J.D., Houghton, S.D., Knudsen, K.L. and Penny, D.N. (1990) The Pleistocene sea-level and neotectonic history of the eastern Solent, Southern England. Philosophical Transactions of the Royal Society of London B328, 425-477.
73. Prestwich, J. (1859) On the westward extension of the old raised beach of Brighton and on the extent of the sea-bed of the same period. Quarterly Journal of the Geological Society of London 15, 215-221.
74. Prestwich, J. (1892) The raised beaches and 'Head' or 'rubble drift' of the South of England; their relation to the valley drifts and to the Glacial Period; and on a late postglacial submergence. Quarterly Journal of the Geological Society of London 43, 263-343.
75. Reid, C. (1892) The Pleistocene deposits of the Sussex Coast and their equivalents in other districts. Quarterly Journal of the Geological Society of London 43, 344-361.
76. Reid, C. (1897) Geology of the Country around Bognor. Memoirs of the Geological Survey of Great Britain.
77. Reid, C. (1902) Geology of the Country around Ringwood. Memoirs of the Geological Survey of Great Britain.
78. Reid, C. (1903) Geology of the Country around Chichester. Memoirs of the Geological Survey of Great Britain.
79. Reid, C. and Strahan, A. (1889) The Geology of the Isle of Wight. Memoirs of the Geological Survey of Great Britain.
80. Roberts, M.B. (1986) Excavation of the lower Palaeolithic site at Amey's Eartham Pit, Boxgrove, West Sussex: a preliminary report. Proceedings of the Prehistoric Society 52, 215-246.
81. Roberts, M.B. (1990) Amey's Eartham Pit, Boxgrove. In: Turner, C. (ed.), The Cromer Symposium, Norwich, 1990, pp. 62-67. Field excursion guide. Cambridge.
82. Roberts, M.B. (1992) Boxgrove: The Lower Palaeolithic site in Amey's Eartham Pit (SU 924 085). In: Woodward, S. (ed.), The Archaeology of Chichester and District, pp. 21-24. Chichester District Council, Chichester.
83. Roberts, M.B. (1994a) The Middle Pleistocene Site at Boxgrove, West Sussex, UK. Association Française pour l'Etude du Quaternaire. Field Guide. CNRS, Caen.
84. Roberts, M.B. (1994) Reply to D.Q. Bowen and G.A. Sykes. 'How old is Boxgrove Man?'. Nature 371, 751.
85. Roberts, M.B. (1996) The age and significance of the Middle Pleistocene sediments at Boxgrove, West Sussex, UK and their associated archaeology. In: Beinhauer, K.W., Kraatz, R. and Wagner, G.A. (eds.), Neue Funde und Forschungen zur frühen Menschheitsgeschichte Eurasiens mit einem Ausblick auf Afrika. Mannheim/Sigmaringen: Beiheft 1 der Mannheimer Geschichtsblätter N.F.
86. Roberts, M.B., Stringer, C.B. and Parfitt, S.A. (1994) A hominid tibia from Middle Pleistocene sediments at Boxgrove, U.K.. Nature 369, 311-313.
87. Roberts, M.B., Gamble, C.S. and Bridgland, D.R. (1995) The earliest occupation of Europe: The British Isles. In: Roebroeks, W. and Kolfschoten, T. van (eds), The Earliest Occupation of Europe: Proceedings of the European Science Foundation Workshop at Tautavel, France, 1993, pp. 165-191. University of Leiden, Leiden.
88. Roberts, M.B. and Parfitt, S.A. (in press) The Middle Pleistocene Hominid Site at ARC Eartham Quarry, Boxgrove, West Sussex, UK. English Heritage Monograph Series, London.
89. Roebroeks, W. (1996) The English Palaeolithic record: Absence of evidence, evidence of absence and the first occupation of Europe. In: Gamble, C.S. and Lawson, A.J. (eds), The English Palaeolithic Reviewed, pp. 57-62. Trust for Wessex Archaeology Ltd, Salisbury.
90. Roebroeks, W., Conard, N.J. and van Kolfschoten, T. (1992) Dense Forests, Cold Steppes, and the Palaeolithic Settlement of Northern Europe. Current Anthropology 33, 551-586.
91. Roebroeks, W. and van Kolfschoten, T. (1994) The earliest occupation of Europe: A short chronology. Antiquity 68, 489-503.
92. Roebroeks, W. and Kolfschoten, T. van (1995) The earliest occupation of Europe: a reappraisal of artefactual and chronological evidence. In: Roebroeks, W. and Kolfschoten, T. van (eds), The Earliest Occupation of Europe: Proceedings of the European Science Foundation Workshop at Tautavel, France, 1993, pp. 297-315. University of Leiden, Leiden.
93. Roep, T.B., Hoist, H., Vissers, R.L., Pagnier, H. and Postma, D. (1975) Deposits of southwards flowing Pleistocene rivers in the Channel region, near Wissant, NW France. Palaeogeography, Palaeoclimatology, Palaeoecology 17, 289-308.
94. Salvador, A. (ed.) (1993) International Stratigraphic Guide. A Guide to Stratigraphic Classification, Terminology and Procedure, 2nd edn. The International Union of Geological Sciences and the Geological Society of America, Inc., 214 pp.
95. Scourse, J.D. and Austin, R.M. (1995) Palaeotidal modelling of continental shelves: Marine implications of a land-bridge in the Strait of Dover during the Holocene and Middle Pleistocene. In: Preece, R.C. (ed.), Island Britain: A Quaternary Perspective, pp. 75-88. Geological Society Special Publication No. 96.
96. 6 year scale. Quaternary Research 3, 39-55.
97. Shephard-Thorn, E.R. and Wymer, J.J. (1977) Guide to X INQUA Excursion A5; South-East England and Thames Valley. Geo Abstracts, Norwich, 76 pp.
98. Shephard-Thorn, E.R. and Kellaway, G.A. (1978) Quaternary deposits at Eartham, West Sussex. Brighton Polytechnic Geographical Society Magazine 4, 1-8.
99. Shephard-Thorn, E.R., Berry, F.G. and Wyatt, R.J. (1982) Geological Notes and Local Details for 1:10000 sheets SU 80 NW, NE, SW and SE, SU 90 NW, NE, SW and SE, TQ 00 NW, SW (West Sussex Coastal Plain between Chichester and Littlehampton). Institute of Geological Sciences, Keyworth.
100. Smith, A.J. (1985) A catastrophic origin for the palaeovalley system of the eastern English Channel. Marine Geology 64, 65-75.
101. Smith, A.J. (1989) The English Channel - by geological design or catastrophic accident?. Proceedings of the Geologists' Association 100, 325-337.
102. Smith, R.A. (1926) A Guide to the Antiquities of the Stone Age, 3rd edn. British Museum, London.
103. Stinton, F. (1985) British Quaternary fish otoliths. Proceedings of the Geologists' Association 96, 199-215.
104. Stuart, A.J. (1995) Insularity and Quaternary vertebrate faunas in Britain and Ireland. In: Preece, R.C. (ed.), Island Britain: A Quaternary Perspective, pp. 111-126. Geological Society Special Publication No. 96.
105. Sutcliffe, A.J. (1995) Insularity of the British Isles 250000-30000 years ago: the mammalian, including human, evidence. In: Preece, R.C. (ed.), Island Britain: A Quaternary Perspective, pp. 127-140. Geological Society Special Publication No. 96.
106. Sutcliffe, A.J., Currant, A.P. and Stringer, C.B. (1987) Evidence of sea-level change from coastal caves with raised beach deposits, terrestrial faunas and dated stalagmites. Progress in Oceanography 18, 243-271.
107. Warren, S.H. (1897) Notes on a section of the Pleistocene rubble drift near Portslade, Sussex. Geological Magazine 34, 302-304.
108. Wenban-Smith, F.F. (1995) The Ebbsfleet Valley (Baker's Hole) (TQ 615735). In: Bridgland, D.R., Allen, P. and Haggart, B.A. (eds), The Quaternary of the Lower Reaches of the Thames, pp. 147-164. Field Guide. Quaternary Research Association, Cambridge.
109. Wessex Archaeology (1994) The Southern Rivers Palaeolithic Project. Report No. 3, 1993-1994. The Sussex Raised Beaches and the Bristol Avon. Wessex Archaeology, Salisbury.
110. West, R.G. and Sparks, S.B. (1960) Coastal interglacial deposits of the English Channel. Philosophical Transactions of the Royal Society of London B243, 95-135.
111. West, R.G., Devoy, R.J.N., Funnell, B.M. and Robinson, J.E. (1984) Pleistocene deposits at Earnley, Bracklesham Bay, Sussex. Philosophical Transactions of the Royal Society of London B306, 137-157.
112. Whatley, R.C. and Kaye, F. (1971) The palaeoecology of Eemian (last interglacial) ostracoda from Selsey, Sussex. In: Oertli, H.J. (ed.), Paléoécologie Ostracodes, pp. 311-330. Bulletin du Centre Recherches Pau-SPNA 5 (suppl.)
113. White, H.J.O. (1913) The Geology of the Country near Fareham and Havant. Memoirs of the Geological Survey of Great Britain.
114. White, H.J.O. (1924) Geology of the Country around Brighton and Worthing. Memoirs of the Geological Survey of Great Britain.
115. Woodcock, A. (1981) The Lower and Middle Palaeolithic Periodx in Sussex. British Archaeological Reports, British Series 94.
116. Wymer, J.J. (1988) Palaeolithic archaeology and the British Quaternary Sequence. Quaternary Science Reviews 7, 79-98.
117. Wymer, J.J. (1996) The English Rivers Palaeolithic Survey. In: Gamble, C.S. and Lawson, A.J. (eds.), The English Palaeolithic Reviewed, pp. 7-23. Trust for Wessex Archaeology Ltd, Salisbury.
118. Young, B. and Lake, R.D. (1988) Geology of the Country around Brighton and Worthing. Memoirs of the British Geological Survey, Sheets 318 and 333. HMSO, London.