PROCEEDINGS OF THE GEOLOGICAL SOCIETY

VOL. 44, PART 4, NO. 35, PP.

INDEX TO VOLUME 44

ADAMS, A. E. , on Lower Carboniferous Beaumont lead mine, Allendale, 4 Renalcis from Cumbria, 327-331 Beckermonds Scar Borehole, 59 ff. Aegirine, 356 Asbian and Holkerian foraminifera from, Agrenocythere pliocenica, 317, Fig. 4.3 103-108; Alisocysta margarita, 356, 359, Fig. 2 correlation with Raydale Borehole and Allenheads Borehole, 102 , 62, Fig. 2; Allerston Quarry, Hackness Hills, 258 Dinantian macropalaeontology of, 86- Alston Block, 480 f£; 88; subsidence of, 191 ff. mineral flats in Dinantian of, 83-86; Alton Coal, 40 petrography of pre-Carboniferous rocks Alum Shales, 45 in context of magnetic anomaly at Alveolar texture, 172 site, 89-98, PL 7, figs. 1-4, PL 8, figs. Ammonites, zonation of the Upper 1 & 2 Oxfordian of the Vale of Pickering, vitrinite reflectance determinations from, Yorkshire, 53-58 99-102 Amoeboceras bauhini, PI. 6, fig. 1; Beedale Quarry, Hackness Hills, 258 A.freboldi, PI. 6, figs. 4 & 5; BENTON, M. j. & TAYLOR, M. A., on marine A. masoni, PI. 6, figs. 8, 9 & 10; reptiles from the Upper Lias (Lower A. rosenkrantzi, PL 6, fig. 2; Toarcian, Lower Jurassic) of the York• A. schulginae, PL 6, fig. 6; shire coast, 399-429 Amoeboceras sp., PL 6, figs. 3 & 7 BERRIDGE, N. G., on the petrography of the Antimony, trace element in galena, 153 pre-Carboniferous rocks of the Becker• Apatite, 438 monds Scar Borehole in the context of Apectodinium hyperacanthum, 358, 359, Fig. the magnetic anomaly at the site, 89-98 2 Birrenswark lava field, 190 Archaediscus grandiculm, PL 9, fig. 12; 'Blackshale Coal', 34. 37 A. stilus, PL 9, fig. 5; Blow Gill, 367 A. tataricus, PL 10, fig. 16 Blowgill Member (Middle Jurassic), 365- Arfvedsonite, 356 373 Arenig, in Beckermonds Scar Borehole, Bohemograptus bohemicus bohemicus 67 ff.; (Barrande), 381, Fig. 4 A-D isograptids from, 219-248 Boles, load induced bedding in, 37 Arsenic, 431 ff. Boltby Scar, Corallian succession at, 263 Asbian, foraminifera from Beckermonds Boreholes: Scar Borehole, 103-108 Allenheads, 102 Ashfell Sandstone, 64, 87 Beckermonds Scar, 59 ff. Askrigg Block, 480 ff.; Bottesford, 2, 37 aeromagnetic map of, 60, Fig. 1; Brown Moor, 372 mineralisation of, 153 ff. Caldon Low, 189 Asteroarchaediscus sp., PL 9, fig. 8 Charlestown, 286 Crystal Palace, 358 Egypt Plantation, 37, 39 Bairdia sp., 321, Fig. 6.33 Harlequin, 34 Ball Beds, 252 Harton, 102 Banded Tills, 133 Heath Lane, 34 Barium carbonate, in brick making, 502, Plungar, 34 506 Raydale, 59 BARKER, R. D. , on geophysical surveys Redmile 1, 37 near Goxhill, South Humberside, 119- Sproxton, 34 129 Three Shire Oak, 34 'Bathyal lull', 185, 200 Bos worth Clay and Silts, 131

519 520 INDEX TO VOLUME 44

BOTT, M. P. H., SW1NBURN, P. M. & LONG, Renalcis, from Lower Carboniferous of R. E. , on the deep structure and origin of Cumbria, 327 ff. the Northumberland and Stainmore Westphalian, volcanic rocks from Troughs, 479-495 Nottingham, 29-44 Bottom Black Clay, Humberside, 501 ff.; Cardioceras aff. altumeratum, PI. 21, fig. 6; Atterberg limits, 503, Table 1; C. angusticordatutn, PI. 22, figs. 6 & 7; chemical analysis of, 505, Table 3; C. bukowskii, PL 20, fig. 3; PI. 21, fig. 1; cumulative grain size distribution in, C. cordatum, PI. 22, figs. 1 & 10; 502, Fig. 1; C. costicardia, PI. 21, fig. 11; mineralogy of, 503, Table 2; C. excavatoides, PI. 20, fig. 6; workability chart, 504, Fig. 2 C. gloriosum, PL 20, fig. 7; Bradleya dictyon, 317, Fig. 4.15; C. aff. gracile, PI. 21, figs. 2, 3 & 4; B. favosa, 321, Fig. 6.16; C. harmonicum, PL 20, figs. 1 & 2; B.forbesi, 321, Fig. 6.25 C. paucicostatum, PL 18, figs. 1, 2 & 3; Bravoite, 153 C. persecans, PL 22, figs. 2, 3 & 11; BRIDGES, p. H., on the origin ofcyclothems C. phillipsi, PL 20, figs. 8 & 9; in the late Dinantian platform carbonates C. plasticum, PL 22, figs. 4 & 5; at Crich, Derbyshire, 159-180 C. praecordatum, PI. 19, figs. 1, 2, 3 & 4; Bridlington Crag, 315 C. reesidei, PL 20, figs. 4 & 5; Brown Moor Borehole, 372 C. scarburgense, PL 18, figs. 4, 5, 6 & 7; Brunsia spirillinoides, PI. 10, fig. 5 C. aff. sequanicum, PL 21, fig. 5; BRUNTON, c. H. c, see Mundy, D. J. C, C. subexcavatum, PL 19, fig. 5; & Brunton, C. H. C. Cardioceras sp., PL 22, figs. 8 & 9 BUCKLEY, A., on anomalous uranium in Castle Hill, Scarborough, succession in, superficial deposits overlying Wasdale 256 Head Granite, Cumbria, 431-442 Cayton Bay, 251, 257 Bude formation, 195 Chalcopyrite, 155 BURGESS, i. c, on the stratigraphical Chalk, 119 ff. distribution of Westphalian volcanic Chalky Till, 133 rocks to the east and south of Notting• Charlestown Borehole, 286 ham, 29-44 Chee Tor Limestone, 343 Butterknowle Fault, 481 Cheviot Block, 480 Butterly Marine Band, 285 ff.; Cheviot Granite, 481 trace fossils from, PI. 23, PI. 24 Cheviot Hills, field meeting report, 207- Bythoceratina scaberrima, 317, Fig. 4.5 209 Chevronichnus, 290 Churchway High Delf Coal, 11, 18 Cladarocythere apostolescui, 321, Fig. 6.14; Cadeby Sand and Gravel, 131 C. hantonensis, 321, Fig. 6.13 Calcareous Grit, Lower, 249 ff. Clay Cross Marine Band, 33, 34, 37 Calcispheres, 66 Climacammina sp., PL 9, fig. 9 Caldon Low Borehole, 189 Coalfields, earliest workable coals in, 194 Caledonian suture, 191 Cobalt, 157 Candona cliffendensis, 321, Fig. 6.1; Cochlichnus, 298, PL 24 F C. daleyi, 321, Fig. 6.2 Cockermouth lavas, 190 CANN, j. R., discusses paper by Wilson, Coleford High Delf Coal, 11, 18 A. A. & Com well, 1. D., 97 Coleoptera, 141 Carbonkola, trace fossils as evidence in the Commensalism, an example from the evolution of, 283-303 Upper Lias of Yorkshire, 45-51 Carboniferous, Asbian and Holkerian Cone, from the Speeton Clay of York• foraminifera from the Beckermonds shire, 205 Scar Borehole, 103-108; Coneygarth Hill, 367 Dinantian, cyclothems in platform car• COOPER, A. H., leader of field meeting to bonates at Crich, Derbyshire, 159- Permo-Triassic of Ripon area, 209-211 180; CORNWELL, j. D. , see Wilson, A. A. & Dinantian, Holkeria gen. nov., a Corn well, J. D. foraminifer from the Holkerian stage, COX, B. M. & RICHARDSON, G., On the 145-151; ammonite zonation of Upper Geographical changes in Britain during, Oxfordian mudstones in the Vale of 181-203; Pickering, Yorkshire, 53-58 INDEX TO VOLUME 44 521

Copper, ore minerals from Cumbria and Mollusca from, 390-392; Pennines, 153 ff. Ostracoda from, 392-394; Coversands, in the English Midlands, 131 summary of stratigraphy, palaeobotany ff. and radiocarbon dates, 388, Fig. 3 Crackington Group, 195 Dinantian, in Beckermonds Scar Bore• CREANEY, s., on vitrinite reflectance deter• hole, 61 ff; 86 ff; 103 ff,; minations from the Beckermonds Scar a new genus of foraminifer from, 145 ff.; Borehole and the Raydale Borehole, platform carbonates at Crich, Derby• Yorkshire, 99-102 shire, 159 ff; Cretaceous, Speeton Clay, a cone from, photomicrographs, Pis. 13-15; 205 thickness variations on the Askrigg Cribrospirapanderi, PI. 9, fig. 13; PI. 11, fig. Block, 79 1; Dinoflagellate zonatioh, 355 ff. C. pansa, PI. 11, figs. 2 & 3 ?Dinosaur, from the Upper Lias of the Crich inlier, 159 ff. Yorkshire coast, 418 Cristobalite, 506 Diplocraterion burrows, 371 Crocodiles, from the Upper Lias of the Discinisca infraoolithica, 45 ff, Pis. 4 & 5 Yorkshire coast, 404 ff. Dolerite, quarried as roadstone, 341 Crystal Palace Borehole, 358 Dolomite, crystals in Dinantian of Becker• Cunstone Nab, 257 monds Scar Borehole, 63 ff. Curie temperatures, 75 DOUGLAS, T. D., on periglacial involutions Cushmaniaea haskinski, 321, Fig. 6.18; and evidence for coversands in the C. stintoni, 321, Fig. 6.17; English Midlands, 131-143 C. wightensis, 321, Fig. 6.19 Dracodinium simile, 359, 360 Cyamocytheridea herbertiana, 321, Fig. 6.23; D. varielongitudum, 359, 360 C. purii, 321, Fig. 6.22; Drape folds, 190, 201 C. subdeltoidea, 321, Fig. 6.21 DUNHAM, A. C. & MWAKARURWA, G. M., On Cyclothems, in the late Dinantian the mineralogy of brickmaking at platform carbonates at Crich, Derby• Broomfieet, North Humberside, 501- shire, 159-180 517 Cypria dorsolata, 321, Fig. 6.4 DUNHAM, SIR KINGSLEY, discusses paper by Cyprideis pannonica, 317, Fig. 4.11; Fig. Wilson, A. A. & Cornwell, J. D., 98 4.12 Dunsil Coal, 40 Cypridopsis bulbosa, 321, Fig. 6.5; C. hessani hantonensis, 321, Fig. 6.3 Cythere lutea, 317, Fig. 4.1 Cytherella compressa, 321, Fig. 6.30 EAGAR, R. M. C, OKOLO, S. A. & WALTERS, Cytherelloidea lacunosa, 321, Fig. 6.20 G. F. , on trace fossils as evidence in the Cytheretta porosacosta, 321, Fig. 6.27; evolution of Carbonicola, 283-303 C. rhenana headonensis, 321, Fig. 6.24; Ebbw Vale, Sopwith's model of, 21 ff., PI. C. teshekpukensis, 306, Fig. 1 2, fig. 2 Cytheromorpha bulla, 321, Fig. 6.9 Egypt Plantation Borehole, 37, 39 Cytheropteron latum, 317, Fig. 4.8; Elled Coal, 22 C. testudo, 317, Fig. 6.2 Eller Beck Formation, its relation to the Cytherura pulchra, 321, Fig. 6.10 supposed Blowgill Member (Middle Jurassic) of the Yorkshire Basin, 365-373 Endostaffella cf. delicata, PI. 9, fig. 15 Endothyranopsis crassa, PI. 10, fig. 14 Dacryomya ovum, with attached Discinisca Ennerdale Granophyre, 431 ff. infraoolithica, PI. 4, figs. 1-6 Eocytheropteron weatherelli, 321, Fig. 6.29 Danny Bridge Limestone, 61, 65, 86 Eostaffella parastruvei, PI. 10, fig. 1 Dartmoor granite, 196 Epeirogeny, 200 DEARMAN, w. R. , see Turner, S. & Epidote, in Arenig of Beckermonds Scar Dearman, W. R. Borehole, 70 Deep Main Coal, 39 ff. Eskdale Granite, 431 ff. De la Beche, Henry, 2, 4, 9 Etruria Marl, 40 Devensian, 131 ff.; Eustatic sea-level changes, 198 ff. Late Devensian and early Flandrian EVANS, w. E. , discusses paper by Bott, M. fauna and flora from Kildale, north• P. H., Swinburn, P. M. & Long, R. E., east Yorkshire, 385-397 494 522 INDEX TO VOLUME 44

Fahlerz, 153 Greywackes, 68, 89 ff. Fawes Wood Limestone, 64, 87 Grisedale Pike, Keswick, graptolite Fearnsides Prize, presentation of, 217 locality, 222 Fenestral fabric, 63, 64 Gypsum, as poikilitic cement in Permian Field meetings: Cheviot Hills, 207-209; sandstone, 497; Hambleton Hills, 213-216; pseudomorphs of, 170, 172 High Hill and Langcliffe area, Settle, 211-213; Permo-Triassic rocks of Ripon area, Hadrian's Wall, geophysical investigations 209-211 of Whin Sill in area, 109-118 FIELDING, c. R. , questions Burgess, I. C, Hambleton Hills, field meeting report, 43 213-216 Filey Brigg, Corallian succession at, 264 Hambleton Oolite, 262 Flexus ludensis, 321, Fig. 6.28 Hammatocythere, 319 Flinty Gravel, 131 Haplocytheridea debilis, 321, Fig. 6.26 Fluorite, fluid inclusion study of, 83 ff. Harlequin Borehole, 40 Foraminifera, in Dinantian of Becker- Harton Borehole, 102 monds Scar Borehole, 63, 103-108, Pis. Hazelina indigena, 321, Fig. 6.34 9 & 10; Heat flow measurements, in Beckermonds a new genus from the Holkerian stage of Scar Borehole, 75 the British Dinantian, 146-151, Pis. Heath Lane Borehole, 34 11 & 12 Hebridean plateau basalts, 361 Forbescythere, 319 Helmsdale Granite, 438, Table 1; 440 Forest of Dean, Sopwith's models of, 11- Hemicytherura videns, 317, Fig. 4.9 21, PI. 1, PL 2 fig. 1, PL 3 Henryhowella asperrima, 317, Fig. 4.13 Forschiinae, PI. 9, fig. 2 Hesslandona unisulcata Muller, 472, Fig. lib; Gamma logs, 61 ff. reconstruction of, Fig. 11c GARRATT, M. J. & RICKARDS, R. B., On Heterocypris luzonensis, 306 graptolite biostratigraphy of early land HEWARD, A. P., questions Burgess, I. C, plants from Victoria, Australia, 377-384 43 Garsdale Limestone, 63, 65, 87 High Hill and Langcliffe Scar, Settle, field Gehlenite, 506 ff. meeting report, 211-213 Geographical changes in Britain during the Highdales Quarry, Hackness Hills, 258 Carboniferous Period, (Presidential Holkeria gen. nov., a foraminifer Address 1980) 181-203 characteristic of the Holkerian stage of Gingin, Western Australia, Upper Creta• the British Dinantian, 145-151; ceous ostracod fauna from, 447 Holkeria avonensis, 148, PL 11, figs. 6-9, Glomospiranella aff. dainae, PI. 10, fig. 15 PI. 12, fig. 1; Goliathiceras anacanthum, PL 21, figs. 8& 9; H., aff avonensis, PL 12, figs. 2 & 3; G. goliathus, PI. 21, fig. 10; H. daggeri sp. nov., 150, PL 12, figs. 7 & G. magnacanthum, PL 21, fig. 7; 8; Goliathiceras sp., PL 19, fig. 6 H. topleyensissp. nov., 150, PL 12, fig. 4; Gondwanaland, 199 H. aff topleyensis, PL 12, figs, 5 & 6 Gondwana glaciation, 194, 199 Holkerian, foraminifera from the Becker• Gormire Lake, 367 monds Scar Borehole, 103-108 Goxhill, South Humberside, geophysical Horton Limestone, 65 investigations near, 119-129 Hoxnian Sub-Basement Clay (Bridlington Graptolite biostratigraphy of early land Crag), 315 plants from Victoria, Australia, 377- Hungarella limbata, differing developments 384; in Upper Triassic beds of St. Cassian, Ghin Ghin locality, small portion of Italy, 460, Fig. 7 stratigraphic section through Lower Hydraulic Limestone, 365 ff. Plant Assemblage, 379, Fig. 3; 'Hyphalocythere' sp., 317, Fig. 4.14 Yea area, geological map and section of, 378, Fig. 2 Graptolite localities, 221, 222 Ice-wedge casts, 138, 140 GREENWOOD, D. A., discusses paper by Ichthyosaurs, from the Upper Lias of the Turner, S. & Dearman, W. R., 27 Yorkshire coast, 409 ff. INDEX TO VOLUME 44 523

Idiocythere bartoniana, 320, Fig. 6.32 KNOX, R. W. o'B. & MORTON, A. C., On the INESON, P. R., WALTERS, S. G. & SIMON, stratigraphical distribution of early Pal• R. M., on the petrography and geo• aeogene pyroclastic deposits in the chemistry of the Waterswallows Sill, North Sea Basin, 355-363 Buxton, Derbyshire, 341-354 Koninckopora, 164 Ingleton Group, 68 Involutions, 131 ff. Isograptus gibberulus (Nicholson), and the Lake District-Weardale granite batholith, isograptids of the Arenig Series of 481 and Wales, 219-248; Lapilli-tuffs, 37 /. caduceus gibberulus, 223, Fig. 1 A-E; Laurasia, 184 229, Fig. 2, A-E, G, K; PI. 16, fig. 1; Leucoxene, 93 j. caduceus cf. imitatus, 228, Fig. 2 F, H-J; Lias, of Yorkshire, 401 ff. J. caduceus (Salter), 230, Fig. 2 L-M; Liesegang banding, 67 J. victoriae divergens (Harris), 231, Fig. 3 Limestone Road, Victoria, Australia, plant A-C and graptolite locality, 379 ff. Lituotubelfa glomospiroides, PI. 9, fig. 1 Lleyn Peninsula graptolite locality, 222 London, Clay, 358 LONG, R. E., see Bott, M. P. H., Swinburn, P. M. & Long, R. E. JENKINS, c. j., on Isograptus gibberulus ?Longaeviceras sp., PI. 18, fig. 1 (Nicholson) and the isograptids of the LORD, T. C., see Mundy, D.J. C. & Lord, Arenig Series (ordovician) of England T. C. and Wales, 219-248 LOS, A. p., see Summers, T. P., Los, A. P. Joan Coal, 39 & Westbrook, G. K. JOHNSON, G. A. L., on the geographical Low Bright Coal, 39 changes in Britain during the Carbon• Low Estheria Band, 37 iferous period (Presidential Address Lunedale-Butterknowle faults, 78 1980), 181-203 Lyell, use of Sopwith's models, 4 JONES, R. L., see Keen, D. H., Jones, R. L. Lytoceras cornucopia, showing several & Robinson, J. E. Discinisca infraoolithica, PI. 5 Jurassic, Lower, Marine reptiles from Upper Lias of the Yorkshire coast, 399 ff; an example of commensalism from the Magnetic rocks, in Beckermonds Scar Upper Lias of Yorkshire, 45 ff.; Borehole, 71-78 Middle, the Eller Beck formation and Magnetic susceptibility, 69, 71 ff. the supposed Blowgill Member of the Magnetite, detrital, 61, 75, 94 Yorkshire Basin, 365 ff; Magnetite, veinlets, 94 Upper, the Lower Oxfordian of North Mansfield Marine Band, 33, 40 Yorkshire, 249 ff; Marine reptiles from the Upper Lias ammonite zonation of the Upper (Lower Toarcian, Lower Jurassic) of the Oxfordian mudstones of the Vale of Yorkshire coast, 399-429; Pickering, 53 ff. crocodiles, 404 ff; ?Dinosaur, 418; eggs and embryos, 418-419; Karstic solution, 159 ff. Ichthyosaurs, 409 ff. KEEN, D. H., JONES, R. L. & ROBINSON, J. E., Plesiosaurs, 413 ff. on a late Devensian and early Flandrian Pterosaur, 418; fauna and flora from Kildale, north-east plot of number of reptiles against their Yorkshire, 385-397 stratigraphic age, 421, Fig. 5; Kelso lava field, 190 reptiles from south-west Germany, 422; Kilburn Coal, 40 list of known museum specimens, 427 Kildale, north-east Yorkshire, a late ff. Devensian and early Flandrian fauna and Market Weighton Structure, 367, 370 flora from, 385-397 Mediocris mediocris, PI. 9, fig. 14 Kilnsey Limestone, 66 Melanopsis sp., 317, Fig. 4.10 Kisselovia coleothrypta, 359, 360 Menai Straits, graptolite locality, 222 Knott Head, graptolite locality, 221 Mercia Mudstone (Keuper Marl), 133, 139 524 INDEX TO VOLUME 44

Michrystridia, 68 Northumberland and Stainmore Troughs, Middle White Clay, Humberside, 501 ff.; the deep structure of, 479-495; Atterberg limits of, 503, Table 1; crustal section along longitude 2°W, chemical analysis of, 505, Table 3; 487, Fig. 5; cumulative grain size, 502, Fig. 1; map showing depth to seismic mineralogy of, 503, Table 2; basement, 483, Fig. 1; workability chart, 504, Fig. 2 seismic recordings at stations along the Midland Valley of Scotland, 185, 191, 194, NERL line, 485, Fig. 3; 492 seismic recordings at the NERL stations Millerella infulaeformis, PI. 10, fig. 6 of the LISPB shot at Spadeadam, 486, Miller's Dale Lava, Lower, 343, ff. Fig. 4; Miller's Dale Limestone, 343 upper crustal structure along longitude Mineral flats, in the Dinantian of the 2°W, 484, Fig. 2 Beckermonds Scar Borehole, 83-86 Mineralogy of brickmaking at Broom-

fleet, North Humberside, 501-516 OKOLO, s. A., seeEagar, R. M. C, Okolo, Modellwg Coal, 21 S. A. & Walters, G. F. Moenocypris forbesi, 321, Fig. 6.7 Oldstead Oolite, 262 M. reidi, 321, Fig. 6.8 Olwellites, 298 Molybdenum, 431 ff. Omphalotis minima, PI. 9, fig. 10 Monograptus aff. uncinatus uncinatus Ordovician, petrographical details of Tullberg, 382, Fig. 5 A-E rocks in Beckermonds Scar Borehole, Monsal Dale Limestones, 159 PI. 7, figs. 1-4; MORTON, A. c, see Knox, R. W. O'B. & mineralisation and metamorphism Morton, A. C. interrelationships in Beckermonds Mulhte, 506 ff. Scar Borehole, PL 8, figs. 1 & 2 MUNDY, 13. J. C. & BRUNTON, C. H. C, On Ostracoda and Uniformitarianism. I. The the discovery of the Dinantian product- later record: Recent, Pleistocene and acean Septarinia leuchtenbergensis (de Tertiary (Presidential address 1981), Koninck) in the British Isles, 333-340 305-326; MUNDY, D. j. c. & LORD, T. c, leaders of noding, 308; field meeting to High Hill and Langcliffe effect of physico-chemical conditions on Scar area, Settle, 211-213 shell features, 309; Mytilus speyeri, 317, Fig. 4.7 parthenogenesis and sexual dimor• MWAKARUKWA, C;. M., see Dunham, A. C. phism, 311; predation, 307; & Mwakarukwa, G. M. II. The earlier record: Cretaceous to Cambrian (Presidential Address 1982), 443-478 Cambrian, 473 ff; NEALE, j. w., on the Ostracoda and Carboniferous, 463 ff.; ostracod dis• Uniformitarianism; tribution in different facies of the I. The later record: Recent, Pleistocene Spanish Westphalian, 464, Fig. 8; and Tertiary (Presidential address Cretaceous, 444 ff.; marine develop• 1981), 305-326; ments, 444 ff.; non-marine II. The earlier record: Cretaceous to developments, 451 ff; salinity, 451; Cambrian (Presidential Address dispersal, 457; migration of genera in 1982), 443-478 early Cretaceous, 445, Fig. 1; Nentsberry, Sopwith's model of, 23 presumed salinity tolerances of Neocyprideis colwellensis, 321, Fig. 6.11; microfossils in the Wealden Marine N. williamsoniana, 321, Fig. 6.12 Bands, 455, Fig. 5; distribution of Nibelia nibelis, PL 10, figs. 3 & 4 microfossils in the Capel Marine Nickel, 157 Band, Lower Weald Clay, 456, Fig. 6; Ninety Fathom Fault, 480 ff. Devonian, 468 ff; ostracod distribution Nodosarchaediscus sp. PI. 9, figs. 3, 4 & 7 in different environments of the Nontronites, 347 Middle Devonian Sea, 466, Fig. 9; North Sea, early Palaeogene pyroclastic ostracod distribution in the various deposits of, 355-363 facies of the Devonian of the Northumberland Trough, subsidence of, Voronezh Region, U.S.S.R.; 470, 190, 191 Fig. 10; INDEX TO VOLUME 44 525

Jurassic, 461 ff.; distribution of genera in Plesiosaurs, from Upper Lias of the York• Middle Purbeck, Durlston Cycle, shire coast, 413 ff. Upper Jurassic, 454, Fig. 4; Plungar Boreholes, 34 Silurian and Ordovician, 471 ff.; Plungar Oilfield, 34 Triassic and Permian, 462 ff.; differing POWELL, j. H. , leader of field meeting in development of Hungarella limbata in Hambleton Hills, 213-216 the Carnian (Upper Triassic) Beds of POWELL, j. H. & RATHBONE, P. A., on the St. Cassian, Italy, 460, Fig. 7 relationship of the Eller Beck Formation Oxfordian, Lower, of North Yorkshire, and the supposed Blowgill Member 249-281; (Middlejurassic) of the Yorkshire Basin, Upper, of Vale of Pickering, ammonite 365-373 zonation of, 53-58 Pseudisograptus angel n. sp., 238; Fig. 4 A-C, ?D, E; PI. 16, fig. 4; PI. 17, fig. 3; Palaeogene, pyroclastic deposits in the P. ? menaiensis n. sp., 234; Fig. ?4I; Fig. 5 North Sea Basin, 355-363 A-C. F; PI. 17, figs. 2 & 5; Palaeospiroplectammina paprothae, PI. 10, P. stellus (Hopkinson), 232; Fig. 4 F-L; fig. 10 PI. 16, fig. 2; PL 17, fig. 1; Palaeotextularia consobrina, PI. 10, fig. 13 Pseudisograptus n. sp. A, 239; Fig. 5 E; PL Palaeozoic, Lower, in Beckermonds Scar 17, fig. 4; Borehole, 61, 67 Pseudisograptus n. sp. B, 240; Fig. 5 D Palagonitised glass, 356 Pseudoendothyra sublimis, PL 9, fig. 6 Pangea, 196, 199 Pterosaur, from Upper Lias of the York• Paracypris sp., 321, Fig. 6.15 shire coast, 418 ff Paralic swamps, 194 Pterygocytheris fimbriata, 321, Fig. 6.31 Park End High Delf Coals, 11, 21 Pyromorphite, 157 Passage Beds (Upper Jurassic), 249 ff. Pattersoncypris micropapillosa Bate, 452, Fig. Quartz-microdiorite, 70, 93, 96 3a, b & c Quasibuntonia radiatopora, 317, Fig. 4.4 PATTISON, j., on Dinantian macro- Quenstedtoceras sp., PL 19, fig. 7 palaeontology of the Beckermonds Scar Borehole, 86-88 Peak District, 159 RATHBONE, P. A., see Powell, J. H. and PEARCE, j. A., on a cone from the Speeton Rathbone, P. A. Clay (Lower Cretaceous) of East York• Ravens' Gill, Corallian succession in, 261 shire, 205 Red basal Permian sands: a new discovery Pelecypodichnus burrows, 284 ff. in National Coal Board boreholes off Pekoceras sp., PI. 19, figs. 8 & 9 Sunderland, north-east England, 497- Pennine Till, 133 500; Pennine uplift, 197, 201 distribution of red Basal Permian Sands Pennines, of Cumbria and North York• in boreholes, 498, Fig. 1 shire, copper ore-minerals from, 153- Red Hill Oolite, 327 158 Renalcis, from the Lower Carboniferous of Periglacial involutions, 131 ff. Cumbria, 327-331; PL 26, figs. 1 & 2 Permafrost table, 138, 139 Rhomaleosaurus cramptoni, 412, Fig. 4b Permian, red basal sands, a new discovery RICKARDS, R. B., see Garratt, M. J. & in National Coal Board boreholes off Rickards, R. B. Sunderland, 497-500 Ripon area, field meeting to Permo- Permo-Triassic of the Ripon area, field Triassic of, 209-211 meeting report, 209-211 ROBINSON, j. E., see Keen, D. H., Jones, Phillips Medal, presentation of, 375 R. L. and Robinson, J. E. Pilton Beds, Upper, 188 Rockall-Greenland rift, 361, 362 Pitchblende, 440 Roddans Port, Co. Down, Northern Pityostrobus leckenbyi, 205 Ireland, late Devensian and early Planolites, 288 Flandrian molluscan and ostracod fauna Plateau basalt, 191 from, 394 Platform carbonates, at Crich Derbyshire, Rookhope Seismological Array Station, 159 ff. 485 Plectogyranopsis ampla, PI. 9, fig. 11; Rotliegendes sandstone, 499 P. settlensis, PI. 10, fig. 12 Roundstonia globulijera, 313, Fig. 2 526 INDEX TO VOLUME 44

Saintoft Quarry, 252; Stainmore trough, subsidence of, 191 succession in, 259 Stainmore and Northumberland Troughs, Saintoft Member (Ball Beds), 252 ff. the deep structure and origin of, 479-495 Saponites, 347 Standedge cutting, Marsden, 286 ff. Schwarzacher's cycles, 65, 87 Steam Coal Series, 21 'Scolicia' trails, 298 Steneosaurus gracilirostris, 407, Fig. 3 Scremerston Coal Group, 194 Stephanian folding, 196 Seismic refraction profiles, 111 Stibioluzonite, 153 Septabrunsiina sp. PI. 10, figs. 7 & 8 Stockdale line, 78, 481 Septarinia leuchtenbergensis (de Koninck), STRANK, A. R. E. , on Asbian and Holkerian discovery in the Dinantian of the British foraminifera from the Beckermonds Isles, 333-340; Scar Borehole, 103-108; on Holkeria lectotype from Belgium, PI. 27, figs. 1- gen. nov., aforaminifer characteristic of 6; the Holkerian stage of the British from Cracoe, North Yorkshire, PI. 27, Dinantian, 145-151 figs. 9-10; Stublick-90 Fathom faults, 190, 480 from Little Island, Cork, PI. 27, figs. 11- Stylohtes, 172 15; SUMMERS, T. P., LOS, A. P. & WESTBROOK, Settle, field meeting to High Hill and G. K. , on geophysical investigations of Langcliffe Scar area, 211-213 the Whin Sill in the Roman Wall district Shap Granite, 441 of Northumberland, 109-118 SHEPHERD, T. J. & WILSON, A. A., On Swaledale orefield, copper minerals from, mineral flats in the Dinantian of the 153 ff. Beckermonds Scar Borehole and a fluid SWINBURN, P. M., see Bott, M. P. H., inclusion study of fluorite, 83-86 Swinburn, P. M. & Long, R. E. Sills, in Westphalian of north-east Leicestershire, 40, 41 Silver, in Askrigg field, 155 TAYLOR, M. A., see Benton, M. J. & SIMON, R. M., seelneson, P. R., Walters, S. Taylor, M. A. G. & Simon, R. M. Tectonic breccias, 70 Skiddaw Granite, 441 Temnodontosaurus lon^irostris, 412, Fig. 4a Skipton Hill, 367, 368, 372 Tenants' Cliff Member, 252 ff. Slab-pull subduction, 189, 201, 488 Tennantite, 153 ff. SMALL, A. T., on new data on tetrahedrite, Tethys, Tertiary history of, 318 tennantite, chalcopyrite and pyro- Tetrahedrite, 153 ff. morphite from the Cumbrian and Thalassinoides burrows, 257 North Yorkshire Pennines, 153-158 Thermal subsidence, 489 Smectite, 344 ff; PL 28, figs. 1-3; PL 29, Thermomagnetic measurements, 75 figs. 1-3 Three Shire Oak Borehole, 34 SMITH, D. B., on red basal Permian sands: a Tin, 156, 157 new discovery in National Coal Board Titanium, metamorphic mobility of, 93 boreholes off Sunderland, north-east Ton Croft Limestone, 65, 88 England, 497-500 Top Red Clay, Humberside, 501 ff; Solenoporacean algae, 162 Atterberg limits of, 503, Table 1; SOPWITH, THOMAS, large geological chemical analysis of, 505, Table 3; models, 1-28; cumulative grain size, 502, Fig. 1; historical importance of models, 4; mineralogy of, 503, Table 2; relation of models to isometric drawings workability chart, 504, Fig. 2 and plans, 5; Tourmaline veins, 70 the Forest of Dean models, 11-21; PL 1, Tournaisian, 188, 189 figs. 1 & 2; PL 2, fig. 1; PL 3; Trenchard coals, 11 the Ebbw Vale model, 21, PL 2, fig. 2; Tuff cone, 344 the Nentsberry model, 23; TURNER, s. & DEARMAN, W. R., on Thomas method of making, 8 Sopwith's large geological models, 1-28 Sorby Medal, presentation of, 216 Ty-nant Limestone, 66 Speeton Beds, a cone from, 205 Speeton Shell Bed, 315 Spinel, 506 Ullock Pyke, Skiddaw, graptolite locality, Sproxton Borehole, 34 INDEX TO VOLUME 44 527

Uniformitarianism, and Ostracoda, 305 Weardale Granite, 77, 185, 190, 481 ff., 443 ff. Weissliegendes sandstone, 499, 500 Uraninite, 440, 441 Wensleydale Granite, 59, 71, 76, 481 Uranium, anomalous in superficial WESTBROOK, G. K., see Summers, T. P., deposits overlying the Wasdale Head Los, A. P., & Westbrook, G. K. Granite, Cumbria, 431-442; Westphalian, volcanic rocks to east and in Dinantian of the Beckermonds Scar south of Nottingham, 29-44 Borehole, 63,64 Wetzeliella astra, 359, 360; W. meckelfeldensis, 359, 360 Wheat Beck, 367 Vale of Belvoir coalfield, 29 ff. Whin Sill, geophysical investigations in Vale of Pickering, 251; the Roman Wall district, 109-118 ammonite zonation of Upper Oxfor• White Bog, Co. Down, Northern Ireland, dian mudstones in, 53-58 late Devensian and early Flandrian mol- Veryhachium trispinosum, 67; luscan fauna from, 394 V. lairdi, 68 White Horse, Skiddaw, graptolite locality, Vestrogothia, 472, Fig. 11a 222 Virgatocypris edwarsi, 321, Fig. 6.6 WILSON, A. A. & CORN WELL. J. D., On the Vitrinite reflectance determinations from Institute of Geological Sciences Bore• the Beckermonds Scar Borehole, 99-102 hole at Beckermonds Scar, North Yorkshire, 59-82 WILSON, A. A., see Shepherd, T. J. & Wales-Brabant ridge, 189 ff. Wilson, A. A. Walk Mill Foss, a type locality for the F.llcr Winter Gill ironstone, 368 Beck Formation, 371 Wollastonite, 506 ff. WALTERS, G. i., sec Eagar, R. M. C., Wolstonian deposits, 131 ff. Okolo, S. A. & Walters, G. F. Woolwich Clays, 358 WALTERS, s. G., see Ineson, P. R., Walters, Woorgreen Coal, 11 S. G. & Simon, R. M. WRIGHT, j. K. , on the Lower Oxfordian Waterswallows Sill, Buxton, petrography (Upper Jurassic) of North Yorkshire, and geochemistry of, 341-354; 249-281 modal analyses of, 346; major and trace element analysis of348; X-ray diffraction analyses of, 346; Yard Coal, 39, 40 potassium-argon age determinations, Yea District, Victoria, Australia, 377 ff.; 349; geological map of, 378, Fig. 2 photomicrographs of, PI. 28, figs. 1-3; Yellow Sands, 497 ff. PI. 29, figs. 1-3 Yttrium, trace elements in fluorite, 153 WATSON, j. s., on occurrence of Discinisca on Dacryomya ovum: an example of commensalism from the Upper Lias of Zircon, 438 Yorkshire, 45-51 YORKSHIRE GEOLOGICAL SOCIETY

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