The Quarterly Journal of �9 �9

Mires and peats

Volume 19 No. 1 1986 ISSN 0481-2085 Encompassing Engineering Geology and Hydrogeology

G E O L O G I C A L SOCIETY President Secretaries Foreign Secretary Treasurer

Professor C H Hol land Dr K Coe, Dr W J French , Dr R G Park Mr F W Dunn ing Professor B E Leake

E N G I N E E R I N G J O U R N A L E D I T O R I A L B O A R D

Chairman and Scientific Editor: Mr A L Little, The Geological Society, Burlington House, Piccadilly, London W1V 0JU (Telephone: 01-734 2356). Sub Editor (Engineering Geology): Dr M H De Freitas, Imperial College, London SW7 (Telephone: 01-589 5111). Sub Editor (Hydrogeology): Mr K M Baxter, Water Research Centre, P.O. Box 16, Marlow, Bucks. (Telephone: 0491-57531). Dr J H Atkinson, Dr R D Barker, Mr J H Black, Dr L Clark, Mr K R Early, Professor P G Fookes, Mr W B Harris, Dr A B Hawkins, Dr R Herbert, Mr J WHooper . Dr R J W McDermott, Dr S D Priest. Mr R W Simpson, Dr B O Skipp, Dr D A Spears, Dr R K Taylor, Mr M J Tomlinson. Engineering Group Chairman: Mr D N Holt, Engineering Group Secretary: Mr J WHooper , Hydrogeology Group Secretary: Dr P Towler.

F E L L O W S H I P O F T H E G E O L O G I C A L S O C I E T Y

M E M B E R S H I P O F T H E E N G I N E E R I N G A N D

H Y D R O G E O L O G I C A L G R O U P S

Membership is open to all Fellows of the Society. There are no rigid requirements for election to Fellowship, although it is usually expected that candidates will be graduates in geology or an allied subject, or have equivalent qualifications or experience. The specialist groups arc open to all Fellows without additional charge. Enquiries concerning Fellowship of the Society and membership of the specialist groups should be sent to the Secretary, Geological Society, Burlington House, Piccadilly, London WlV 0JU. All Fellows of the Society are entitled to receive for their subscription either of the Society's two journals, the Quarterly Journal of Engineering Geology or the Journal of the Geological Society. On payment of an additional sum of s on the annual subscription, members may obtain copies of both journals.

T H E Q U A R T E R L Y J O U R N A L O F

E N G I N E E R I N G G E O L O G Y

The scope of the journal, within the fields of hydrogeology and engineering geology, is widely drawn. The journal is open to contributions from Fellows and non-Fellows of the Society, in this country and overseas. Papers will be considered which deal with any of the subjects within the field of geology as applied to civil engineering, mining practice, and water resources, including rock mechanics, soil mechanics and geotechnics; applied sedimentology, pedology, mineralogy and petrology: geohydrology and hydrogeology engineering seismology and the engineering application of geophysics.

Case histories and review articles of a more general character will also be considered, particularly if these are of a timely nature. It will be editorial policy occasionally to group several related papers together in the same issue.

�9 T h e G e o l o g i c a l S o c i e t y 1986

Authorization to photocopy for internal or personal use or the internal or personal use of specific clients is granted by the Geological Society for libraries and other users registered with the Copyright Clearance Center (CCC) Transactional Reporting Service, provided that the base fec of $02.00 per copy is paid directly to the CCC, 27 Congress Street, Salem, MA 01970, U.S.A. This consent does not extend to other kinds of copying, such as copying for general distribution, for advertising or promotional purposes, for creating new collective works or for resale. Special requests should bc addrcsscd to the Editor. 0481-2085 86 $02.(1().

1986subscription: s (UK), s (Overseas)~ U.S.$135.00 (North America): single numbers all issues s ($34 U.S.A.)" double numbers s ($68 U.S.A.). The journal is delivered to North America by accelerated surface post (a.s.p.) and subscribers there can expect to receive their copies within 2 weeks of British publication. Current issues for the Indian subcontinent, Australasia and the Far East are sent by air to regional distribution points from where they are forwarded to subscribers bv surface mail. Any back numbers are normally despatched by surface to all regions, except North America, where the}' are sent by a.s.p., and India, where they are sent by air freight.

Cover illustration: Section of the M5 Birmingham to Exeter Motorway, UK, through Court Hill ridge north-east of Clevedon in Somerset. The view looking north-east shows the split-level motorway flanked on the right by a rock cut in Carboniferous Limestone (Black Rock Group and Lower Shale Group) with bedding dips of 20 to 40 degrees into the rock face. This 30 m-high face which was formed by pre-split blasting prior to bulk excavation stands at slopes of between 1 on 1~ and 1 on 2. Weathered top-rock is retained by a thin tied-back reinforced concrete wall; revetment of the main rock-face has been by concrete plugging of solution cavities and rock bolting in adverse jointing locations. Photo by Freeman Fox & Partners.

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COLCRETE I N T E R N A T I O N A L

G E O T E C H N I C A L E N G I N E E R S

�9 Dam Grout ing �9 Ground Anchorages �9 Min i Pi l ing �9 Ground Treatment �9 Tunnel Grout ing �9 Diaphragm Walls �9 Jet Grout ing �9 Structura l Repair �9 Fabric Formwork �9 In jected Concrete

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Colou r - coded image of a sect ion of the R ive r Thu r so (black = very cold, red = cold, blue = cool . yel low = warm) .

Co lou r - coded image of a sect ion of Loch Leir t oge the r with a swa rm of dubh- lochs (black = very cold, red = cold, blue = cool , yel low = warm) .

THE Q U A R T E R L Y J O U R N A L OF ENGINEERING GEOLOGY

Vol. 19, No. 1 1986 Price s

Photographic feature: Infra-red linescan survey at Altnabreac, Northern Scotland 2

N. B. HOBBS: Mire morphology and the properties and behaviour of some British and foreign peats . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Notices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81

Special notice to authors . . . . . . . . . . . . . . . . . . . . . . . . . 83

The following papers will be published subsequently:

S. PURl: Exotic uses of aquifers

K. J. EDWORTHY & S. PvaI: Groundwater and aquifers--an overview of 'exotic' u s e s

P. F. WORTHINGTON: The relationship of aquifer petrophysics to hydrocarbon evaluation

A. W. HERBERT, D. P. HODGKINSON, D. A. LEVER, J. RAE & P. C. ROBINSON: Mathematical modelling of radionuclide migration in groundwater

P. COLE & P. A. COLLINS: Simulation of gas and oil flow in hydrocarbon reservoirs

C. R. ALDWELL: Energy potential of Irish groundwaters

R. KITCHING & B. ADAMS: Thermal energy storage studies in the Lower Greensand aquifer in Cambridgeshire

Indexed in Current Contents, ASCii, Science Citation Index

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