Proceedings of the

Yorkshire Geological Society

V O L U M E 4 6 P A R T 1 1 9 8 6

Yorkshire Geological Society FOUNDED 1 8 3 7

PATRONS: Britoil pic, Century Power & Light Ltd, Clyde Petroleum pic, Elf UK Ltd, Esso Exploration & Production UK Ltd, V. C. Illing & Partners, Moray Petroleum Holdings & Development Ltd, RTZ Oil and Gas Ltd, Sovereign Oil & Gas pic, Taylor Woodrow Energy Ltd.

C O U N C I L Elected 7th December, 1985

President Dr D. B. SMITH

Vice-Presidents Dr A. E. CURRALL Mr J. HARTLEY

General Secretary Mr J. M. NUNWICK

45 Boroughbridge Road, Northallerton DL7 8BG

General Treasurer Mr L. B. EAGLE

22 Moorfield Road, Ilkley, West Yorks, LS29 8BL

Editor Dr R. W. O'B. KNOX

British Geological Survey, Keyworth, Notts. NG12 5GG

Librarian Mr F. F. JOHNSTON

Department of Earth Sciences, The University, Leeds LS2 9JT

Dr N. S. ANGUS Mr A. C. BENFIELD Dr A. C. COOPER Prof. A. C. DUNHAM Dr B. N. FLETCHER

Other Members Dr M. D. MACMAHON Mr R. OSBORN Mr T. H. PETTIGREW Mr J. H. RIPPON Mr A. G. SHORT

Dr D. SKEVINGTON Mr P. STAINTHORPE (Asst Treas.) Dr R. K. TAYLOR Dr M. A. WHYTE (AsstSec.)

Assistant Editors Dr P. R. INESON Dr P. W. SCOTT Dr N. J. SOPER Dr J. E. POLLARD Dr J. R. SENIOR Dr R. K. TAYLOR Dr P. F. RAWSON Dr D. B. SMITH

Annual Subscription Ordinary Members £10.00 Students Members £5.00 Institutional Members £25.00 Associate Members £2.50

Forms of application and other information obtainable from the General Secretary.

Cover photograph: Clysiophyllum sp. A. Transverse section. Moel Hiraddug Limestone Formation (Arundian), Moel Hiraddug Quarry, North Wales. See Somerville et al, this volume, Figure 7c.

PROCEEDINGS OF THE

YORKSHIRE GEOLOGICAL SOCIETY

Volume 46

ISSN 0044-0604

Printed for the Yorkshire Geological Society by ARTHUR WIGLEY & SONS LTD., CANAL ROAD, BRADFORD

PROCEEDINGS OF THE YORKSHIRE GEOLOGICAL SOCIETY

C O N T E N T S O F V O L U M E 46

page

A H M E D , S. T .

Oxfordian and Lower Kimmeridgian ostracods from the South Ferriby Quarry, South Humberside . 267

ALLSOP, J . M .

Patterns of late Caledonian intrusive activity in eastern and northern England from geophysics, radiometric

dating and basement geology 335

ALLSOP, J. M. see Chroston, P. N., Allsop, J. M. and Cornwell, J. D.

ALLSOP, J. M. see Evans, C. J. and Allsop, J. M.

BANCROFT, A. J.

The Carboniferous cystoporate bryozoan Eridopora macrostoma Ulrich from the north of England . 23

BECKINSALE, R. D. see Pharaoh, T. C , Merriman, R. J., Webb, P. C , and Beckinsale, R. D.

BRIDGES, T . F.

Serpierite and devilline from the Northern Pennine Orefield (Short Communication) 169

B R I D G E S , T . F see Young, B., Bridges, T. F. and Ineson, P. R.

BRANNEY, M . J .

The Stockdale (Yarlside) Rhyolite — a rheomorphic rhyolite? Discussion 80 BRUNTON, C. H. C. and MUNDY, D. J. C. Some Dinantian chonopectinid productaceans (Brachiopoda) from the British Isles 1 CHROSTON, P. N., ALLSOP, J . M. and CORNWELL, J. D.

New seismic refraction evidence on the origin of the Bouguer anomaly low near Hunstanton, Norfolk . 311

COOPER, C. see Rock, N. M . S., Cooper, C. and Gaskarth, J. W.

CORNWELL, J. D. see Chroston, P. N., Allsop, J. M. and Cornwell, J. D.

Cox, B. M., LOTT, G. K., THOMAS, J. E. and WILKINSON, I. P.

Upper Jurassic stratigraphy of four shallow cored boreholes in the U.K. sector of the southern North Sea 97

DAGGER, G. W. see Harris, P. & Dagger, G. W.

DICKSON, J. A. D . , F O R D , T . D. & SWIFT, A.

Thestratigraphy of the Carboniferous rocks around Castleton, Isle of Man . 203 EVANS, C. J. & ALLSOP, J. M. Some geophysical aspects of the deep geology of eastern England 321 FLETCHER, B. N. see Lott, G. K., Fletcher, B. N. & Wilkinson, I. P.

PROCEEDINGS OF THE YORKSHIRE GEOLOGICAL SOCIETY

CONTENTS OF VOLUME 46 (continued) page

FORD, T. D. see Dickson, J. A. D., Ford, T. D. & Swift, A.

FORTEY, N. J., see Young, B., Fortey, N. J. & Nancarrow, P. H. A.

GASKARTH, J. W. see Rock, N. M. S., Cooper, C. & Gaskarth, J. W.

HARRIS, P. & DAGGER, G. W.

The intrusion of the Carrock Fell Gabbro Series (Cumbria) as a sub-horizontal tabular body . . . . 371

INESON, P. R. see Young, B., Bridges, T. F. & Ineson, P. R.

IXER, R. A. & STANLEY, C. J .

A silver-nickel-cobalt mineral association at Tynebottom Mine, Garrigill, near Alston, Cumbria . . 133

KlMYONGUR, M. see Scott, P. W., Kimyongur, M. & Middleton, R.

KIRBY, G. A. & SWALLOW, P. W .

Tectonism and sedimentation in the Flamborough Head region of north-east Yorkshire 301

LAWRENCE, D. J. D. see Millward, D. & Lawrence, D. J. D.

LOTT, G. K., FLETCHER, B. N. & WILKINSON, I. P.

The stratigraphy of the Lower Cretaceous Speeton Clay Formation in a cored borehole off the coast of north-east England 39 LOTT, G. K. see Cox, B. M., Lott, G. K., Thomas, J. E. & Wilkinson, I. P.

MERRIMAN, R. J. see Pharaoh, T. C , Merriman, R. J., Webb, P. C. & Beckinsale, R. D.

MIDDLETON, R. see Scott, P. W., Kimyongur, M. & Middleton, R.

MILLWARD, D . & LAWRENCE, D . J . D . The Stockdale (Yarlside) Rhyolite — a rheomorphic ignimbrite? Reply 81

MOTTRAM, H . B. Geochemistry & tectonic significance of the Lower Carboniferous Cockermouth lavas, Cumbria. Discussion 82

MITCHELL, M . , STRANK, A. R. E., THORNBURY,B. M . & SEVASTOPULO, G. D . The distribution of platform conodonts, corals and foraminifera from the Black Rock Limestone (late Tournaisian and early Visean) of Tears Point, Gower, South Wales 11

MITCHELL, M. see Somerville, I . D . , Mitchell, M. & Strank, A. R . E.

MUNDY, D . J. C. see Brunton, C. H. C. & Mundy, D . J. C.

NANCARROW, P. H. A. see Young, B., Fortey, N. J. & Nancarrow, P. H. A.

NOEL, M. The magnetostratigraphy of cave sediments in Masson Hill, Derbyshire 193

NUDDS, J. R. & SOMERVILLE, I. D. Two new species of Siphonodendron (Rugosa) from the Visean of the British Isles 293

PATTISON, J . & WILLIAMSON, I. T. The saltern mounds of north-east Lincolnshire (Short Communication) 77

ii

PROCEEDINGS OF THE YORKSHIRE GEOLOGICAL SOCIETY

C O N T E N T S O F V O L U M E 46 (continued) page

PEDLEY, H. M . The Handrian (Quaternary) Caerwys Tufa, North Wales: an ancient barrage tufa deposit . . . . 141

PHARAOH, T. C., MERRIMAN, R . J., WEBB, P. C. & BECKINSALE, R . D.

The concealed Caledonides of eastern England: preliminary results of a multidisciplinary study . . . 355

RIDING, J. B.

Dinoflagellate cyst stratigraphy of the Nettleton Bottom Borehole (Jurassic: Hettangian to Kimmeridgian), Lincolnshire, England 231 R O C K . N . M . S., COOPER, C. & GASKARTH, J. W . Late Caledonian subvolcanic vents and associated dykes in the Kirkudbright area, Galloway, south-west Scotland 29

ROMANO, M . & WHYTE, M . A . A limulid trace fossil from the Scarborough Formation (Jurassic) of Yorkshire; its occurrence, taxonomy and interpretation 85

SCOTT, P. W., KIMYONGUR, M . & MIDDLETON, R . The mineralogy and petrology of the 'Coprolite Bed' phosphorite deposit (Lower Cretaceous) at Speeton,

North Yorkshire 123

SELDEN, P. A. see Siveter, D. J. & Selden, P. A.

SEVASTOPULO, G. D. see Mitchell, M., Strank, A. R . E., Thombury, B. M. & Sevastopulo, G. D.

SIVETER, D. J. & SELDEN, P. A.

A new, giant xiphosurid from the lower Namurian of Weardale, County Durham 153 SOMERVILLE, I. D. , MITCHELL, M. & STRANK, A. R . E.

An Arundian fauna from the Dyserth area, North Wales and its correlation within the British Isles . . 57

SOMERVILLE, I. D. see Nudds, J. R . & Somerville, I. D.

SOPER, N. J., W E B B , B. C. & WOODCOCK, N. H.

Late Caledonian (Acadian) transpression in north-west England: timing, geometry and geotectonic significance 175 STANLEY, C. J. see Ixer, R . A. & Stanley, C. J.

STARKEY, R . E. Duftite from the Northern Pennine Orefield (Short Communication) 289

STRANK, A. R . E. see Mitchell, M., Strank, A. R . E., Thornbury, B. M. & Sevastopulo, G. D.

STRANK, A. R . E. see Somerville, I . D., Mitchell, M. & Strank, A, R . E.

SWALLOW, P. W. see Kirby, G. A. & Swallow, P. W.

SWIFT, A. see Dickson, J . A. D., Ford, T. D. & Swift, A.

THOMAS, J . E. see Cox, B . M., Lott, G. K., Thomas, J . E. & Wilkinson, I . P.

THORNBURY, B. M. see Mitchell, M., Strank, A. R . E., Thornbury, B. M. & Sevastopulo, G. D.

WALKDEN, G. M., FRASER, N. C. & MuiR, J .

A new specimen of Steneosaurus (Mesosuchia, Crocodilia) from the Toarcian of the Yorkshire coast . 279 iii

PROCEEDINGS OF THE YORKSHIRE GEOLOGICAL SOCIETY

CONTENTS OF VOLUME 46 (continued)

page

WEBB, B. C. see Soper, N. J., Webb, B. C. & Woodcock, N. H.

WEBB, P. C. see Pharaoh, T. C , Merriman, R. J., Webb, P. C. & Beckinsale, R. D.

WOODCOCK, N. H. see Soper, N. J., Webb, B. C. & Woodcock, N. H.

WHYTE, M. A. see Romano, M. & Whyte, M. A.

WlGNALL, P. B. A biofacies analysis of the Gastrioceras cumbriense Marine Band (Namurian) of the central Pennines . I l l WILKINSON, I. P. see Cox, B . M . , Lott, G. K., Thomas, J. E. & Wilkinson, I. P.

WILKINSON, I. P. see Lott, G. K., Fletcher, B . N. & Wilkinson, I. P.

WILLIAMSON, I. T. see Pattison, J. & Williamson, I. T.

YOUNG, B . , BRIDGES, T. F. & INESON, P. R .

Supergene cadmium mineralisation in the Northern Pennine Orefield 2 7 5

YOUNG, B . , FORTEY, N. J. & NANCARROW, P. H. A.

An occurrence of tungsten mineralisation in the Eskdale Intrusion, west Cumbria 1 5

FIELD MEETING REPORT 1984-1985 170

FIELD MEETING REPORT 1 9 8 6 2 8 9

MEDAL PRESENTATIONS 8 2

OBITUARIES 1 7 3 , 2 8 9

SOCIETY ACTIVITIES 1985 8 3

SOCIETY ACTIVITIES 1986 3 8 1

INDEX FOR VOLUME 4 6 3 8 2 - 3 8 5

iv