Front Matter

Scottish Journal of GEOLOGY

Volume 22, Part 3, pages 289-432 1986

Published for the Geological Societies of Edinburgh and Glasgow by SCOTTISH ACADEMIC PRESS The Scottish Journal of Geology continues the Transactions of the Edinburgh Geological Society and the Transactions of the Geological Society of Glasgow, and is sponsored by the councils of the two Societies. It contains three parts per volume. The Journal is sent to members of both societies. Details of membership may be obtained from the secretaries, whose names appear below. The Societies gratefully acknowledge financial help from the Kilwarlin Trust. Contributions or legacies to assist towards the cost of publication of the Journal would be welcomed by the Editorial Board. Secretaries of Societies EDINBURGH GLASGOW A. A. MCMILLAN, British Geological Survey B. R. BELL, Department of Applied Geology, Murchison House University of Strathclyde, West Mains Road, Edinburgh EH9 3LA Glasgow Gi iXJ

The cover shows Pseudotealliocaris sp. (under revision), collected by S. P. Wood during the excavation of Carboniferous (Namurian) rocks in Bearsden by the Hunterian Museum, University of Glasgow, 1981-2. (Specimen no. G500, Zoology Museum, Cambridge). Photography by Neil Clark, who has made the above reconstruction of the shrimp from this specimen and others collected at Bearsden, East Kilbride and Granton.

Volume XXII

1986 Scottish Journal o GEOLOGY

Editors I. ALLISON A. OWEN G. M. BIGGAR J. D. PEACOCK S. BROWN N. H. TREWIN J. HALL D. GRANT

Volume XXII

1986

Published for the Geological Societies of Edinburgh and Glasgow by SCOTTISH ACADEMIC PRESS The Scottish Journal of Geology is a Journal continuing and amalgamating the Transactions of the Edinburgh Geological Society and the Transactions of the Geological Society of Glasgow, and is sponsored by the Councils of the two Societies.

Printed in Northern Ireland at The Universities Press (Belfast) Ltd. CONTENTS

VOLUME XXII PART I (Published 20 May 1986)

WILLIAMS, P. J. Petrology and origin of iron-rich silicate-magnetite-quartz rocks from Flowerdale near Gairloch, Wester Ross .... i

BALLANTYNE, c K. Protalus rampart development and the limits of former glaciers in the vicinity of Baosbheinn, Wester Ross.... 13

TIPPING, R. A late-Devensian pollen site in Cowal, south-west Scot land 27

RUSHTON, A. W. A., STONE, P., SMELLIE, J. L. and TUNNICLIFF, S. P. An early Arenig age for the Pinbain sequence of the Ballantrae Complex 41

ROBINS, N. S. and BALL, D. F. Groundwater resources in the Orkney Islands . . 55

SIMON, j. B. Provenance and setting of some Ordovician and Silurian conglomerates in Northern Ireland 63

GASTALDO, R. A. An explanation for lycopod configuration, 'Fossil Grove', Victoria Park, Glasgow 77

BATTEN, D. J., TREWIN, N. H. and TUDHOPE, A. W. The Triassic-Jurassic junction at Golspie, Inner Moray Firth Basin 85

BANCROFT, A. J. A new Carboniferous fenestrate bryozoan genus 99

ROCK, N. M. S., MACDONALD, R., szucs, T. and BOWER, j. The comparative geochemistry of some Highland pelites (Anomalous local limestone-pelite successions within the Moine outcrop; II) 107

SHORT COMMUNICATIONS TANTRIGODA, D. A. Interpretation of magnetic anomalies over the Blackstones

Bank Igneous Centre, West Scottish shelf 127

MUNRO, M. Mylonite zones in the Insch 'Younger Basic' Mass .... 132

LETTERS TO THE EDITORS RUSSELL, M. J., ALLISON, I., ANDERTON, R. and HALL, A. j. Metamorphic lime stones of the Great Glen area: comments 137 ROCK, N. M. S., MACDONALD, R. and JEFFREYS, L. A. Metamorphic limestones of the Great Glen area: reply 140 VOLUME XXII PART II {Published 1 October 1986)

SUTHERLAND, DONALD G. A review of Scottish marine shell radiocarbon dates, their standardization and interpretation 145

BOYD, w. E. Fossil Lithothamnium (Calcareous algae) rhodoliths from Late Quaternary raised coastal sediments, Irvine, Ayrshire 165

ROCK, N. M. S., MACDONALD, R., DREWERY, S. E., PANKHURST, R. J. and BROOK, M. Pelites of the Glen Urquhart serpentinite-metamorphic complex of Loch Ness (Anomalous local limestone-pelite successions within Moine outcrop: III) 179

ALEXANDER, R. W. S., DAWSON, J. B., PATTERSON, E. M. and HERVIG, R. L. The megacryst and inclusion assemblage from the Black Rock vent, Ayrshire 203

NICHOLSON, KEITH. Mineralogy and geochemistry of manganese and iron veins, Arndilly, Banffshire 213

MITCHELL, JOHN G. and MOHR, PAUL. K-Ar systematics in Tertiary dolerites from West Connacht, Ireland 225

KEMP, ALAN E. S. Tectonostratigraphy of the Southern Belt of the Southern Uplands 241

GRAHAM, COLIN M. The role of the Cruachan Lineament during Dalradian evolution 257

HARPER, D. A. T. and OWEN, A. w, A shelly biofacies from the graptolitic mudstones of the Lower Balclatchie Group (lower Cara- doc) near Laggan, Girvan district 271

SHORT COMMUNICATION:

ROCK, N. M. S. and RUNDLE, C. C. Lower Devonian age for the 'Great (basal) Conglomerate', Scottish Borders 285

VOLUME XXII PART III (Published March 1987)

LAWSON, T. J. Loch Lomond Advance glaciers in Assynt, Sutherland, and their palaeoclimatic implications 289

NICHOLSON, KEITH and DURANT, GRAHAM P. Fluorite-baryte-calcite-dolomite- iron-manganese mineralisation at Craigmuschat quarry, Gourock; a historical review 299

HARRISON, T. N. The mode of emplacement of the Cairngorm Granite . . 303

SWALLOW, JOHN L. The seismic expression of a low angle detachment (sole fault) from the Beryl Embayment, central Viking Graben . 315 SCOTT, W. B. Nodular carbonates in the Lower Carboniferous, Cement- stone Group of the Tweed Embayment, Berwickshire: evidence for a former sulphate evaporite facies 325

PEACOCK, J. D. Alluvial fans and an outwash fan in upper Glen Roy, Lochaber 347

RICHARDS, PHILIP C. and BROWN, STEWART. Shoreface storm deposits in the Rannoch Formation (Middle Jurassic), North West Hutton oilfield 367

FORTEY, N. J. and SMITH, c. G. Stratabound mineralisation in Dalradian rocks near Tyndrum, Perthshire 377

BALLANTYNE, COLIN K. Late Flandrian solifluction on the Fannich mountains,

Ross-shire 395

SHORT COMMUNICATIONS:

FRIEND, c. R. L. and LAILEY, M. Evidence for early structures in xenoliths in the

South Harris anorthosite, Outer Hebrides 407

BOYD, W. E. A Late Devensian shoreline position in North Ayrshire . . 412

CONFERENCE REPORT:

Sedimentology and Hydrocarbon Potential of the Dinantian Oil-shales of Northern Britain , 417 INDEX 430