Jncc coastal Directories Project Region 11 The Western Approaches

consisting of Rhaetic (Triassic) and Liassic (Jurassic)
sediments.  Isolated inliers of Carboniferous rocks are
exposed on the coast at Barry.  Steep cliffs of Liassic
limestones and shales, locally fossiliferous, form the almost
continuously cliffed coastline west of Barry to Nash Point
and northwards to Ogmore-by-Sea.  These well-bedded
sediments are spectacularly exposed on the wide, sloping
foreshore of this coast.  Some minor valleys, such as at Nash
Point, are abruptly truncated at the coast. 
The Triassic and underlying Carboniferous rocks on the
northern flanks of the Bristol Channel syncline reappear at
Porthcawl, but the bedrock is concealed along much of the
eastern side of Swansea Bay by extensive sand dunes.
2.1.3  Further sources of information
A.  Maps
British Geological Survey.  1982.  Scilly.  Sheet 49°N-08°W.  Sea bed
sediments.  1:250,000 series.  Keyworth, British Geological
Survey.
British Geological Survey.  1982.  Scilly.  Sheet 49°N-08°W.  Solid
geology.  1:250,000 series.  Keyworth, British Geological Survey.
British Geological Survey.  1983.  Lizard.  Sheet 49°N-06°W.  Sea bed
sediments.  1:250,000 series.  Keyworth, British Geological
Survey.
British Geological Survey.  1983.  Lizard.  Sheet 49°N-06°W.  Solid
geology.  1:250,000 series.  Keyworth, British Geological Survey.
British Geological Survey.  1983.  Lundy.  Sheet 51°N - 06°W.  Sea bed
sediments.  1:250,000 series.  Keyworth, British Geological
Survey.
British Geological Survey.  1983.  Lundy.  Sheet 51°N - 06°W.  Solid
geology. 1:250,000 series.  Keyworth, British Geological Survey.
British Geological Survey.  1985.  Land’s End.  Sheet 50°N - 06°W.
Solid geology.  1:250,000 series.  Keyworth, British Geological
Survey.
British Geological Survey.  1986.  Bristol Channel.  Sheet 51°N - 04°W.
Sea bed sediments and Quaternary geology.  1:250,000 series.
Keyworth, British Geological Survey.
British Geological Survey.  1987.  Land’s End.  Sheet 50°N - 06°W.  Sea
bed sediments and Quaternary geology.  1:250 000 series.
Keyworth, British Geological Survey.
British Geological Survey.  1988.  Bristol Channel.  Sheet 51°N - 04°W.
Solid geology.  1:250,000 series.  Keyworth, British Geological
Survey.
British Geological Survey.  1991.  Geology of the United Kingdom,
Ireland and the adjacent continental shelf (south sheet).  1:1,000,000
scale.  Keyworth, British Geological Survey.
Geological Survey of Great Britain (England and Wales).  1977.
Bideford and Lundy Island (sheet 292 and parts of 275,276,291 and
308).  Solid and drift edition.  1:50,000 scale.  Keyworth, British
Geological Survey.
B.  Further reading
Section 7.4 lists the Geological Conservation Review (GCR) sites
occurring in the region.  Detailed descriptions of GCR sites in the
region can be found in volumes of the Geological Conservation
Review series.  
Campbell, S., & Bowen, D.Q.  1989. Quaternary of Wales.
Peterborough, Joint Nature Conservation Committee.
(Geological Conservation Review series, No. 2.)
Campbell, S., ed.  In prep.  Quaternary of south-west England.
London, Chapman and Hall.  (Geological Conservation Review
series, No. 14.)
Cleal, C.J., & Thomas, B.A.  1996.  British upper Carboniferous
stratigraphy.  London, Chapman and Hall.  (Geological
Conservation Review series, No. 11.)
Edmonds, E.A., McKeown, M.C., & Williams, M.  1975.  British
regional geology: south-west England.  London, HMSO for
Institute of Geological Sciences.
Ellis, N.V. (ed.), Bowen, D.Q., Campbell, S., Knill, J.L., McKirdy, A.P.,
Prosser, C.D., Vincent, M.A., & Wilson, R.C.L.  1995.  An
introduction to the Geological Conservation Review.  Peterborough,
Joint Nature Conservation Committee.  (Geological
Conservation Review series, No. 1.)
Evans, C.D.R.  1991.  The geology of the western English Channel and its
western approaches.  London, HMSO.  (British Geological Survey,
United Kingdom Offshore Regional Report.)
Flett, J.S., & Hill, J.B.  1946.  Geology of the Lizard and Meneage.
Memoir of the Geological Survey of Great Britain, Sheet 359
(England and Wales).
Floyd, P.A., Exley, C.S., & Styles, M.T.  1993.  Igneous rocks of south-
west England.  London, Chapman and Hall.  (Geological
Conservation Review series, No. 5.)
George, T.N.  1970.  British regional geology: South Wales.  London,
HMSO for Institute of Geological Sciences.
Goode, A.J.J., & Taylor, R.T.  1988.  Geology of the country around
Penzance.  Memoir of the British Geological Survey, Sheets 351 and
358 (England and Wales).
Gregory, K.J., ed.  In prep.  Fluvial geomorphology of Great Britain.
London, Chapman and Hall.  (Geological Conservation Review
series, No. 13.)
Green, G.W.  1992.  British regional geology: Bristol and Gloucester
region.  Keyworth, British Geological Survey.
Leveridge, B.E., Holder, M.T., & Goode, A.J.J.  1990.  Geology of the
country around Falmouth.  Memoir of the British Geological
Survey, Sheet 352 (England and Wales).
Steers, J.A.  1969.  The coastline of England and Wales.  Cambridge,
Cambridge University Press.
Tappin, D.R., Chadwick, R.A., Jackson, A., Wingfield., R.T.R., &
Smith, N.J.P.  1994.  The geology of Cardigan Bay and the Bristol
Channel.  London, HMSO, for the British Geological Survey.
(United Kingdom Offshore Regional Report.)
C.  Contact names and addresses
Type of information
Contact address and telephone no.
Geological information 
Coastal Geology Group, British 
for region and the whole
Geological Survey, Keyworth,
of Britain, including 
Nottingham  NG12 5GG, 
geological maps at 
tel: [phone]
1:50,000 scale 
Geological Conservation 
*English Nature Devon and 
Review sites, Devon & 
Cornwall Team, Okehampton,
Cornwall
tel: [phone]
Geological Conservation 
*English Nature Somerset and 
Review sites, Somerset 
Avon Team, Taunton, 
& Avon
tel: [phone]
Geological Conservation 
*Countryside Council for Wales, 
Review sites, Gwent, 
Cardiff, tel: [phone]
Mid Glamorgan & 
S. Glamorgan 
Geological Conservation 
*JNCC, Peterborough, 
Review
tel: [phone]
*Starred contact addresses are given in full in the Appendix.
Region 11  Chapter 2  Geology and physical environment
22

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