INDEX to VOLUME 40 at Google Indexer on June 15, 2021 Http

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PROCEEDINGS OF THE YORKSHIRE GEOLOGICAL SOCIETY VOL. 40, PART 4, NO. 40, PP. 653-661, 1ST MARCH, 1976 INDEX TO VOLUME 40

COMPILED BY P. F. RAWSON

Abandoned river courses, Vale of Austwick field meeting, 199-201 York, 223-32 Austwick Formation, 201-2 Actinocamax plenus, 586 Austwick Inlier, 201 Adamellite (Threlkeld Microgran- Avon Gorge, 623 ite), 211-22 Aeolian deposition, of Devensian loess, 31 ff., Permian, 54, 55 Bajocian stage, 115-8, 419 ff. Africa, north, Devonian of, 277-8 Bampton Conglomerate, 212 ff. AITKENHEAD, N., leads field meeting BANKS, N. L., on the Haslingden to North Staffordshire-Derbyshire Flags of south-east Lancashire, Borders, 58-62 431-58, pis. 24-29 Albian stage, 21, 593 Bar-finger sands (Haslingden Flags), Alford borehole, 501 431-58, pis. 24-29 Algae, Carboniferous, 324-6, 331, Barrasford Limestone, 329 332, 616; Devonian, 471 Barremian stage, 1,2, 18; Barremian/ Algal lamination, Permian, 639 ff., Aptian boundary, 499-503 646 Basement beds (Visean), 192 Allenhead borehole, 616 Basement Till, 353 Alston Block, 191-4, 319-34, 613- Bath-House Wood Limestones, 329 30, pi. 51 Becken facies, 477 Ammonites, of Ampthill and Kim- Belah Dolomite, 53, 54 meridge Clays, 592-3; of Belgium, Devonian of, 245-8 Corallian, 207-10; of Lincoln• BENFIELD, A, C, discusses paper by shire Jurassic, 56-8; of Lincoln• Elliott, 535 shire Limestone, 115-8; of Oxford Benthos, Devonian, 477-8 Clay, 292; of Sandringham Sands, Berriasian stage, 2 1-22; of Skegness Clay, 499 ff. Berwick-upon-Tweed, field meeting, Amphipora, 473 593-600 Ampthill Clay, 592 Bewcastle, 130 ff, Analyses, of Quaternary sediments, Bewcastle Beds, 130 ff. Vale of York, 353-72; of Speeton Biofacies regimes, Devonian, 463- Clay, 181-90 85 (see also Radiometric dates) Birkdale Limestone, 616 ff., 626 Ancyropyge (A.) romingeri, 476 Birrenswark Lavas, 130 ff. Anglesey, 491 ff. Bis AT, W. S., obituary, 49-51 Annual Report, 1973, 119-28; 1974, Bivalves, Carboniferous, 139 ff., 567-77 433 ff.; Cretaceous, 586 ff.; Aptian stage, 21, 499-503 Devonian, 467-8, 481; Jurassic, ARCHER, R., on sedimentological 290 ff., 422 ff. consequences of a fall in the level Black Burn Formation, 134 of Haweswater, 547-62, pis. 47- Blackstone Edge Sandstones, 60 50 bodei Subzone, 499-503 Archerbeck borehole, 324 Boltby Moor, 289-95 Arcow Formation, 201 Bone, Pleistocene, dating of, 196-7 Arctic-alpine flora, Teesdale, 206 Boreal Realm, 22 Arnton Fell Formation, 134, 135 Boreholes: Alford, 501; Allenhead, ASHTON, M., on a new section in the 616; Archerbeck, 324; Ashton Lincolnshire Limestone of South Park, 496, 623; Danby, 304, pi. Humberside, 419-29 22; Derbyshire, Visean, 78 ff.; Ashton Park borehole, 496, 623 Elloughton by-pass, 196; Gayton, Askrigg Block, 191-4, 613-30, pi. 51 4 ff.; Harton, 324; Hunstanton, Atherfield Clay, 2 4 ff.; Le Quesnay, 245; Lievin, Australia, Devonian of, 275-7 245; Maltby, 501; Marham, 4 ff.; 653 Downloaded from http://pygs.lyellcollection.org/ by guest on September 29, 2021

654 INDEX TO VOLUME 40

Munsterland I, 249; Raydale, 191- Carneddon Group, 582 4, 620 ff.; Rookhope, 191, 319, Carrock Intrusion, 220, 222 616; Sever als House, 6, 10; Carstone, 1, 2, 10 ff., 499 ff., 592, Skegness, 6, 499-503; Vale of 593 York, Quaternary, 195, 356 ff. CASEY, R,, on the Sandringham Borrowby, coal at, 302-6 Sands of Norfolk, 1-22 Borrowdale Volcanic Group, 207, CATT, J. A., on the loess of eastern 211 ff., 414 ff.,54 9 fF. Yorkshire and Lincolnshire, 23-39 Boulder Clay, Vale of York, origin of, Cautley Mudstone, 200 371 Cave Oolite, 115, 117, 419 Brachiopods, Carboniferous, 492 ff.; Cenomanian/Turonian boundary, 615; Carstone, 593; Devonian, 586-7 468-9, 473 ff. Central Pennine Basin, 144 Bradwell Moor, 76 ff., pi. 11 Chalcedony in Derbyshire Visdan Bramcrag Quarry, 212-5 Limestones, 63 ff., pi. 7 Brantingham, 195 Chalk of South Humberside, field Brassington Formation, 62 meeting, 586-93 Brick-earths, 35, 37 Cheiloceras, pi. 30 BRIGGS, D. J., on small-scale folds in Chert in Derbyshire Visean Lime• the Permian of South Yorkshire, stones, 75-87, pis. 2, 3, 8 309-17 Cheviots, 168, 169 Brockram, 53-5 Clay mineralogy of Speeton Clay, Brown earth on Whin Sill, 107 181-90 Buchia, 18 CLEMMEY, H., discusses paper by Buchiola, 481 Donovan and Archer, 560 BURGESS, I. C, on a recorrelation of Close House-Lunedale fault line, 620 Yoredale Limestones of the Alston Coal Measures, 199, 202-6 Block with those of the Northum• COIXINSON, J. D., on the Haslingden berland Trough, 319-34, pi. 23; Flags of south-east Lancashire, on Lower Yoredale Limestones 431-58, pis. 24-9; discusses papers on the Alston and Askrigg Blocks, by Leeder, 178; Burgess and 613-30. pi. 51 Mitchell, 627 Buried Cliff, East Yorkshire, 24-6, 32 Colwell Limestone, 329 Burnmouth Bay, 594 ff. Comura helios, 476 Burton Bridge Sandstone, 199 Coniconchines, 479 Coniston Limestone Group, 217, 218 Conodonts, Devonian, 239 ff., 482-5 Continents, Devonian, 235, 281-3 Cakifolium, 324-6, 331, 332 Corallian stage, 207-10, 289, 292 Caldron Snout, 207 Corallian Oolite Formation, 208-10 catloviense Zone, 293 Corals, Carboniferous, 492 ff., 615; Cambeck Beds, 130 ff. Devonian, 471-2 Cambering, South Yorkshire, 312-3 Cornbrash, Upper, 290 ff. Capel Curig Volcanic Formation, Council, 1973, 120; 1974, 568 581 ff. COUSINS, J., discusses paper by Carboniferous, base of, 239; Cement- Burgess and Mitchell, 627-8 stone Group, 594 ff.; in Durham, Cow Green Reservoir, field meeting, 202-7; erratics, 356 ff., 631; 205-7 Great Scar Limestone, 41-7, Coxwold-Gilling trough, 298 563-5; Haslingden Flags, 431-58; Craven Faults, 41-7, 563-5 heavy minerals, 537-46; Ingleton Cretaceous, Chalk, South Humber• area, 199-200; Raydale borehole, side, 586-93; in Norfolk, 1-22; 192; sedimentary cycles, 43 ff., Speeton Clay, 181-90 491-7, 613 ff.; silica in, 63-104; Crinoids, Devonian, 472-3 Yoredale delta lobe, 503-36; Cronkley Fell, 109 Yoredale Limestones, 319-34, pi. Crummackdale, 202 23; 361-30, pi. 51 Cumbria, fall in level of Haweswater, Carboniferous Limestone, water 547-62; Seathwaitegraphite. 413- temperatures in, 601-12 8 Downloaded from http://pygs.lyellcollection.org/ by guest on September 29, 2021

INDEX TO VOLUME 40 655

Curig Hill Vent, 582 Drainage pattern, Vale of York, Cycles (cyclothems), sedimentary, 223-32 43 ff., 491-7, 613 ff. Dry Valley Deposits, 590 DUNHAM, SIR KINGSLEY, on granite beneath the Pennines in north Yorkshire, 191-4 Dalla Bank Limestone, 329 Durham Coalfield, field meeting, Dalton Formation, 200 202-7 Danby Coal Pits, 302 ff., pi. 22 Durham Colliery, 202-3 DARBYSHIRE, D. P. F., on the rubidium-strontium age and field relations of the Threlkeld Micro- granite, 211-22 Davidsonina (Cyrtina) septosa Band, 41-7, 563, 564 EARLAND-BENNETT, P. M., on the Deltaic sedimentation, in Northum• Bajocian stratigraphy of eastern berland Basin, 129-80; in Hasling• England, 117-8 den Flags, 448-51; in Yoredales, Eden Shales, 53-5 505-36 EDMONDS, J. M., on geological Deltaic Series, 289, 290 lecture courses by William Smith Dent Fault (Line) 199, 615 ff. and John Phillips, 373-412 Derbyshire, field meeting, 58-62; Eifelian Stage, 239 ff., 460 ff. silica in Visean Limestones, 63- ELLIOTT, T., on the sedimentary 104; water temperatures in Lime• history of a delta lobe, 505-36; stones, 601-12 discusses papers by Collinson and Dersingham Beds Formation, 1, Banks, 455-6; Burgess and Mitch• 16-8 ell, 627 Desiccation cracks, Haweswater, Elloughton by-pass boreholes, 196 556-9, pis. 49, 50 Emergence surfaces in Yoredales, Devensian stage, 23 ff., 195-7, 588, 619 ff., 627 590; ice limit in Vale of York, EMERY, L. H., discusses paper by 631-7 Casey and Gallois, 21 Devonian, base of, 239; facies and Emsian stage, 239 ff., 460 ff. time in tropical areas, 233-88; England, southern, Devonian of, faunas and time, 459-90, pis. 243-5 30, 31; stages, 239-41 ff.; zones, Ennerdale intrusion, 220, 222 240 ff. Entomozoeidae, 479-81 Diagenesis, effects on heavy minerals, Epifauna, Devonian, 468 537-46, pis. 39-46 Epiplankton, Devonian, 481-2

Dibunophyllum X(D) Zone, 491-7, 614 Erratics, Vale of York, 356, 631 ff. Eskdale Granite, 220, 222

Dibunophyllum (D2) Zone, base of, Estuarine Beds, 56, 57 614 ff., 620-3 Europe, Devonian of, 241-60, 465 ff. Dinantian stage, 623 Evaporites, Permian, 55, 639 ff. Diversity of Devonian faunas, 459- EYLES, J. M., discusses paper by 63 Edmonds, 410-11 Dogger Formation, 297 ff. Dolomite, Tournasian, 147 DONOVAN, R. N., on sedimentological consequences of a fall in the level of Haweswater, 547-62, pis. 47-50 Facies, Devonian, 233-88, 463 ff.; DOUGHTY, P. S., on Davidsonina of Lower Border Group, 135-49 septosa and the structure of the Famennian stage, 239 ff.; 460 ff. Great Scar Limestone, 41-7; on Faunas and time in the marine the structure of the Vis6an Devonian, 459-90, pis. 30-31 limestones between the Craven Fearnsides Prize, 124—5 Faults, 564-5 Fell Sandstone Formation, 134, Drab Till, 38, 353 544-5, 594 ff. Downloaded from http://pygs.lyellcollection.org/ by guest on September 29, 2021

656 INDEX TO VOLUME 40

Field meetings; Berwick-upon- Goniatites, Carboniferous, 58-62; Tweed, 593-600; Central and Devonian, 239 ff., 482-3, pi. 31 north Lincolnshire, 56-8; Coral• Graine Beck Limestone, 616 ff., 626 lian of the Vale of Pickering, Granite beneath Pennines, 191—4 207-10; Durham Coalfield and Graphite, Seathwaite, age dates, Cow Green Reservoir, 202-7; 413-8 Ingleton and Austwick, 199-202; Graptolites, Devonian, 239 ff. North Staffordshire—Derbyshire Grassington Grit, 200 borders, 58-62; North-East Snow- Gravity anomalies, Alston and Ask- donia, 581-6; South Humberside, rigg Blocks, 191-2 586-93; Vale of Eden, 53-6 Great Limestone cyclothem, 505 ff. fissicostatum Zone, 499 ff. Great Scar Group, 199 Flandrian stage, 38 Great Scar Limestone, 41-7, 192, Fluorite, relationship with quartz 200, 613 ff. rock, 95-7, pi. 9 Guadalupe Delta, 161 Fluvio-deltaic deposition in North• GUEINN, K. J., discusses paper by umberland Basin, 129-80, pis. Leeder, 177 13-18 Folds, small scale, in Permian, 309-17 France, northern, Devonian of, Hambleton Hills, Jurassic, 289-95 245-8 Harden Beds, 132 ff. Frasnian stage, 239 ff., 460 ff. Hardgrounds, 627 Frodingham Ironstone, 57, 58 HARDING, R. R,, on the rubidium- FROST, D. V., on a recorrelation of strontium age and field relations the Yoredale Limestones of the of the Threlkeld Microgranite, Alston Block with those of the 211-22 Northumberland Trough, 319— HARTNUP, R., on small-scale folds in 34, pi. 23; discusses paper by the Permian rocks of South Hemingway and Tamar-Agha, Yorkshire, 309-17 545 Harton borehole, 324 Haslingden Flags, 431-58, pis. 24-29 Hastings Beds, 5, 16 ff. GALLOIS, R., on the Sandringham HATTON, A. A., on deep weathering Sands of Norfolk, 1-22; on a in the Whin Sill, 105-14, pi. 12 borehole section across the Bar- Hauterivian stage, 1,2, 18 remian/Aptian boundary at Skeg• Haweswater, fall in level of, 547-62, ness, 499-503 pis. 47-50 Garnet, 539-41 Heavy minerals, effects of diagenesis Gastropods, Devonian, 472, 482; of on, 537-46, pis. 39-46 Sandringham Sands, 21, 22 Hectoroceras Beds, 10-4, 21 Gault, 2, 10 HEMINGWAY, J. E., on William Smith GAUNT, G. D., on a radiocarbon date and the Jurassic coals of York• relating to Lake Humber, 195-7; shire, 297-308, pis. 20-22; on the on the Devensian maximum ice effects of diagenesis on heavy limit in the Vale of York, 631-7 minerals from sandstones in the Gayton borehole, 4 ff. Middle Limestone Group, 537-46, Gedinnian stage, 239 ff., 460 ff. pis. 39-46; discusses paper by Catt, Geochemistry of Quaternary sedi• Weir and Madgett, 35 ments, Vale of York, 353 ff., Hercynian facies, 463 ff. 368-70 Hessle Till, 38 Geology in Yorkshire, history of, Hilton Series, 53, 55 335-352 HODGSON, A. V., leads field meeting Germany, Devonian of, 248-52 to Berwick-upon-Tweed, 593-600; Girvanella Bed, 615 ff. discusses papers by Horaung and Givetian stage, 239 ff., 460 ff. Hatton, 112; Leeder, 176-7; Glacial sequences, Lake Humber, Hemingway and Tamar-Agha, 195-7; South Humberside, 588; 544 Vale of York, 223-32, 371 Holderness Tills, classification of, 38 Downloaded from http://pygs.lyellcollection.org/ by guest on September 29, 2021

INDEX TO VOLUME 40 657

HOLDSWORTH, B. K., leads ex• Jurassic, of Boltby Moor, 289-95; cursion to North Staffordshire/ coals, north Yorkshire, 297-308; Derbyshire borders, 58-62 Corallian, Vale of Pickering, HOLLIDAY, D. W., on a recorrelation 207-10; Lincolnshire, 56-8, 115- of the Yoredale Limestones of the 8; Norfolk, 1-22; South Humber• Alston Block with those of the side, 419-29, 591-3 Northumberland Trough, 319-34, pi. 23 Holwick Scars, 105-9 Kaolinite in Speeton Clay, 181-90 Hopgill Beck, 550 ff. Kellaways Rock, 289 ff. HORNUNO, M., on deep weathering KENT, SIR PETER, receives Sorby in the Whin Sill, 105-14, pi. 12 Medal, 122-4; leads field meeting Horton Formation, 201 to Lincolnshire, 56-8; discusses Hotwells Limestone, 623, 624 paper by Casey and Gallois, 20 HOUSE, M. R., on facies and time in Kimmeridge Clay, 1 ff., 592 Devonian tropical areas, 233-88, pi. 19; on faunas and time in the marine Devonian, 459-90, pis. Lake District, Threlkeld Micro- 30-31; discusses papers by Casey granite, 211-22; Haweswater, and Gallois, 20; Catt, Weir and 547-62 Madgett, 35 Lake Ewart, 599 HOWELLS, M. F., leads field meeting Lake Humber, 195-7, 590, 633 ff. to north-east Snowdonia, 581-6 LAMING, D. J. C, discusses paper by Humberside, South, field meeting to, Elliott, 535 586-93 Lancashire, south-east, Haslingden Hunstanton borehole, 4 ff. Flags, 431-58 Hyperlioceras, 115 Langholm, 130 ff. LEACH, J. A., discusses paper by Catt, Weir and Madgett, 36 Ice limit, Devensian, Vale of York, LEEDER, M. R., on the Lower Border Group of the Northumber• 631-7 land Basin, 129-180, pis. 13-18; Illite in Speeton Clay, 181-90 discusses paper by Colllinson and Income and expenditure accounts, Banks, 454-5 1973, 126-8; 1974, 574-7 LEVERIDGE, B. G., leads excursion to INESON, P. R., on potassium-argon ages from the graphite deposits and north-east Snowdonia, 581-6 related rocks of Seathwaite, Cum• Leziate Beds, 1, 5, 14-19 bria, 413-8 Lias, 56, 57 Infauna, Devonian, 467-8 Lincolnshire, field meeting, 5-68; Inferior Oolite, 56 Jurassic of, 56-8, 115-8; Lower Ingleborough, 200 Cretaceous of, 4, 5, 499-503 Ingleton, field meeting, 199-201 Lincolnshire Limestone, 56, 57, Ipswichian buried cliff, 24-6, 32 419-29; ammonites of, 115-8 Ipswichian interglacial, 32, 590, 633 Llangollen, 491 ff. Loess, 23-39 Longmore Sandstone, 60, 62 Lower Border Group, 129-180, pis. John Phillips Medal, 572-3 13-18 JOHNSON, G. A. L., leads field Lower Brown Limestone, 491 ff. meeting to Durham coalfield and Lower Calcareous Grit, 292, 293 Cow Green Reservoir, 202-7; Lower Crafnant Volcanic Forma• discusses paper by Holliday, Bur• tion, 583 ff. gess and Frost, 330-1 Lower Rhyolitic Tuff Formation, JOHNSON, P. G., on evidence for 584 ff. abandoned river courses in the Lower Yoredale Limestones, 613- west of the Vale of York, 223-32 30 Joint densities, Great Scar Lime• Ludlow mudstones, Austwick inlier, stone, 43-5 201 Jointing, Whin Sill, 107 ff. Lunedale, 507, 514-8, 528 ff. Downloaded from http://pygs.lyellcollection.org/ by guest on September 29, 2021

658 INDEX TO VOLUME 40

MADGETT, P. A., on the loess of Mortoniceras, 593 eastern Yorkshire and Lincoln• MOSELEY, F., discusses paper by shire, 23-39 Wadge, Harding and Darby- Magnesian Limestone, 203, 309 ff., shire, 219 639 ff. murchisoni Zone, 202 MAGRAW, D., leads field meeting to Murton High Crags, 598 Durham coalfield and Cow Green Reservoir, 202-7 Main Algal Formation, 130 ff. Main Limestone, 200 Namurian stage, 58-62, 144,431-58, Maltby borehole, 501 505-36, pis. 32-38 Manton Quarry, 422 ff. Nape Howe, coal at, 299-302, pis. Mardale, 550 ff. 20, 21 Marham borehole, 4 ff. Nautiloids, Devonian, 475-6 tnariae Zone, 293 NEALE, J. W., discusses paper by Market Weighton Hinge, 58 Casey and Gallois, 20 Marl bands in Chalk, South Hum• Nekton, Devonian, 482-5 berside, 586 ff. Nemistium edmondsi, 623 Marl Slate, 203 New Zealand, loess of, 38 Marlstone, 56, 57 Norfolk, Sandringham Sands, 1-22 MCCABE, P. J., receives Fearnsides North America, Devonian of, 260- Prize, 124-5; on the structure of 75, 465 ff. the Vis6an Limestones between North Craven Fault, 200 the Craven Faults, 563-4; leads North Staffordshire Basin, 58-62 field meeting to Ingleton and North Wales, Carboniferous sedi• Austwick, 199-202 mentary cycles, 491-7 Melmerby Scar Limestone, 206, Northumberland (Northumbrian) 615 ff. Basin (Trough), 129-80, 319-34, Middle Border Group, 132 ff. 539, 599 Middle Crafnant Volcanic Forma• Northumberland, heavy minerals tion, 585 from, 537-46 Middle Limestone Group, 537-46 Middle Permian Marl, 309 ff.63 9 ff. Middle White Limestone, 491-7 MILLS, A. B., leads field meeting to Durham Coalfield and Cow Green Obituary, W. S. Bisat, 49-51; Reservoir, 202-7 D. Parkinson, 578-80 Millstone Grit, 432 Old Red Sandstone facies, 241 ff., Mineralization, Cow Green Reser• 463 ff., 560, 594, 595 voir, 206; Durham Coalfield, 204 Old Red Sandstone continent, 241 Mineralogy of loess, 30; of Quater• Older Littoral Sand and Gravel, nary sediments, Vale of York, 353 195-7, 590, 633 ff., 364-8; of Speeton Clay, Older River Sand and Gravel, 633 181-90 Onecote Sandstone, 58, 59 Minn Sandstones, 59, 60 Orcadian Basin, 561 Mintlyn Beds, 1 ff., 10-4 16 ff. Ordovician, age of Threlkeld Micro- Mississippi Delta, 454 ff., 506 ff. granite, 217-8; age of Carrock and MITCHELL, J. G., on potassium-argon Ennerdale intrusions, 220; of ages from the graphite deposits Snowdonia, 581-6; of Teesdale and related rocks of Seathwaite, Inlier, 207 Cumbria, 413-8 ORME, G. R., on silica in the Visdan MITCHELL, M., on Lower Yoredale Limestones of Derbyshire, 63-104 Limestones on the Alston and Ostracods, Devonian, 479-81; Rya- Askrigg Blocks, 613-30, pi. 51 zanian, 21 Monkton Moor, 649 OWEN, J. S., on William Smith and MOORE, D., leads field meeting to the Juarssic coals of Yorkshire, Ingleton and Austwick, 199-202; 297-308, pis. 20-22 discusses paper by Burgess and Oxford Clay, 289 ff. Mitchell, 627-8 Oxfordian, 592 Downloaded from http://pygs.lyellcollection.org/ by guest on September 29, 2021

INDEX TO VOLUME 40 659

Palaeocurrents, in Austwick Forma• Purple Till, 38, 353 tion, 201; in Haslingden Flags, 439 Pyrite, 543 ff.; in Northumberland Basin, 150-3,155, 166, 169;inYoredales, Quarry Moor, Permian sabkha 509-36 sequence, 639-652, pi. 52 Palaeogeography, Tournaisian, Nor• Quartz in Derbyshire Vis6an lime• thumberland Basin, 166-71; world stones, 63 ff., pis. 4, 5; quartz-rock Devonian, 235, 281-3 in ditto, 90-6, pis. 6, 9 Palaeokarstic surfaces, 495, 627 Quaternary, abandoned river Palaeomagnetism, Devonian, 235-6 courses, Vale of York, 223-32; 281 Devensian ice limit, Vale of York, Palaeowinds, Yoredale, 535, 536 631-7; fall in level of Haweswater, Paracraspedites, 6 547-62; folding, South York• PARKER, A., on clay mineralogy and shire, 309-17; loess, 23-39; miner• trace elements of the Speeton alogy and geochemistry, Vale of Clay, 181-90 York, 353-72; radiocarbon date, Parkfoot Formation, 199 Lake Humber, 195-7; of South PARKINSON, D., obituary, 578-80 Humberside, 588 ff. PARSONS, C. F., on Bajocan strati• graphy of eastern England, 115-6 Pecca Slates, 200 Radiocarbon dates, 195-7, 633 Pennine Basin, bar-finger sands in Radiometric dates, 6, 12, 191-3, 431-58 195-7, 215-7, 261-2, 413-8, 633 Pennines, 191-4, 505 ff., 615 ff; Rasenia, 592; R. cymodoce Zone, 593 water temperatures in limestones RAWSON, P. F., leads field meeting to of, 601-12 Lincolnshire, 56-8 PENNY, L. F., discusses paper by Raydale, 618; Raydale Beck, 191, Catt, Weir and Madgett, 35 192 Penrith Brockrarn, 53, 54 Raydale borehole, 191-4, 620 ff. Penrith Sandstone, 54, 55 Raypath opencast site, 204-5 Periglacial features, Vale of York, Red Chalk, 2, 593 312-6, 631 ff. Redhill Limestone, 200 Permafrost, 313, 316 Redhouse Burn Limestones, 330 Permian, erratics, 631; sabkha se• Reef-builders, Devonian, 469-71 quence, 639-52; in Vale of Eden, Reefs, Corallian, 208 ff. 53-8; in Vale of York, 227 ff., Regressions, Devonian, 233-88, 460, 309-17 485-6 Pethburn opencast site, 203-4 Rhenish facies, 463 ff. PHILLIPS, JOHN, 337 ff., lecture Rhythms in Great Scar Limestone, courses, 373-412 43, 44 Pictonia, 592; P. baylei Zone, 593 Richterina (R.) striatula, pi. 30 Pin Dale, 76 ff., pi. 11 Ringsteadia, 592; R. pseudocordata PITTY, A. F., on water temperatures Zone, 593 in Pennine limestone areas, 601- Roach, 500 12 Roaches Grit, 59 Plankton, Devonian, 478-81 Rookhope borehole, 191, 319 Pleuroceras, 57 Rownham Hill Coral Bed, 623 Poland, 21; Devonian of, 252-5 Roxham Beds, I, 5-9, 21 Ponticeras perlatum, pi. 30 Rubidium-strontium age dating, Portland Beds, 1 ff., 18 191-3, 215-7 Potassium-argon age dating, 193, Runcton Beds, 1 ff. 413-6 Russian Platform, Devonian of, POWER, G., on the occurrence of 255-60 minor sedimentary cycles in the Rutile, 542 'Middle White Limestone' of Ryazanian stage, 1, 10, 20 ff. North Wales, 491-7 Prodeshayesites bodei, 500; P. fissicosta- Sabkha sequence, Upper Permian, tum Zone, 499 ff. 639-52 Purbeck Beds, 1, 18 ff. St. Bees Sandstone, 53, 55 Downloaded from http://pygs.lyellcollection.org/ by guest on September 29, 2021

660 INDEX TO VOLUME 40

Sandringham Sands Group, 1-22 SMITH, WILLIAM, 337; lecture courses Saxonian folding, 19 in Yorkshire, 373-412; report on Scalby Formation, 289 Yorkshire Jurassic coals, 297-308 Scarborough Formation, 297 ff. Snettisham Clay Member, 1, 2, Schizodus obscurus, 55 16-8 Schwellen facies, 477 Snowdon Volcanic Group, 582 ff. SCOTT, W. B., leads field meeting to Snowdonia, field meeting, 581-6 Berwick-upon-Tweed, 593-600 SOMERVILLE, I. D., on the occur• Scremerstone Group, 597 ff. rence of minor sedimentary cycles Scutellum (Thysanopeltis) speciosum, 476 in the 'Middle White Limestone' Seathwaite graphite, age of 413-8 of North Wales, 491-7 Sedimentary cycles, Carboniferous, Sonninia, 115 491-7 SOPER, N. J., discusses paper by Sedimentary history of a Yoredale Wadge, Harding and Darbyshire, delta lobe, 505-36, pis. 32-8 220 Sedimentary structures, in Carboni• Sorby Medal, 122-4 ferous, 58-62; in Permian, 53-5; South Ferriby Quarry, 591-3 in Silurian, 201-2 South Humberside, field meeting, Sedimentation, Carboniferous of 586-93; Lincolnshire Limestone Berwick area, 594 ff.; Haslingden section, 419-29 Flags, 431-58, pis. 24-29 South-west Province, Carboniferous, Sedimentological consequences of a 623-4 fall in level of Haweswater, 547- SPEARS, D. A., on the mineralogy 62, pis. 47-50 and geochemistry of some Quater• SENIOR, J. R., on the Bajocian nary deposits in the Vale of York, stratigraphy of eastern England, 353-72 117-8; on the Middle and Upper Speeton Clay, 18, 181-90 Jurassic succession at Boltby Moor, Spilsby Sandstone, 6, 10, 22 289-95 Staffordshire, field meeting, 58-62 Settle, 41-7 Stainmore, 507, 519-26, 528 ff. Severals House borehole, 6, 10 Stainmore Trough, 613-30 Shap Granite, 221 Steel Fell diabase, 413 ff. Shorelines, Haweswater, 550-5, pis. Stenkrith Brockram, 53, 55 47, 48, 50 Stockdale Monocline, 620 ff. Shotto Wood Limestone, 329 Stromatoporoids, Devonian, 470-1 Siberia, 10 Structure of Visean limestones be• Siegenian stage, 239 ff., 460 ff. tween the Craven Faults, 41-7, Silica in Derbyshire Visean Lime• 563-5 stones, 63-104, pis. 2-11 Styliolina, 479, pi. 30 Silty drift, eastern Yorkshire and Sub-Devonian geology, 236-9 Lincolnshire, 23-39 Subcraspedites, 9 Silurian, of Austwick and Horton- Sunderland, 203 in-Ribblesdale, 199-202; grey- Sutterby Marl, 499 ff. wackes, 594; age of Weardale Swindale Beck, 109, 113 Granite, 191 Skegness borehole, 499-503 Skegness Clay, 499-503 TAMAR-AGHA, M. Y., on the effects Skiddaw Granite, 220, 221 of diagenesis on heavy minerals Skiddaw Group, 207, 211 ff. from sandstones in the Middle SMALLEY, I. J., discusses paper by Limestone Group, 537-46, pis. Catt, Weir and Madgett, 35 39-46 SMART, J. G. O., leads field meeting TAYLOR, R. K., leads field meeting to South Humberside, 586-93 to Durham Coalfield and Cow Smiddy Limestone, 206 Green Reservoir, 202-7 SMITH, D. B., receives John Phillips Teesdale, 507, 514-8, 528 ff. Medal, 572-3; on the Upper Teesdale Inlier, 207 Permian sabkha sequence at Teretaspis grandis, 476 Quarry Moor, Ripon, 639-52, pi. Tertiary, Brassington Formation, 62; 52 weathering of Whin Sill, 110 Downloaded from http://pygs.lyellcollection.org/ by guest on September 29, 2021

INDEX TO VOLUME 40 661

Tethyan Realm, 22 WAUOH, B,, leads field meetings to The Due, 112 Vale of Eden, 53-6; Ingleton and Threlkeld Mierogranite, age and Austwick, 199-202 field relations, 211-22 Weald Clay, 1, 5, 18, 19 Tickhill, 309 ff. Wealden Group, 18 Tourmaline, 542 Weardale, 507-14, 528 ff. Trace elements, Speeton Clay, 182-5 Weardale Granite, 191, 193, 194 Trace fossils, Carboniferous, 438-9, Weathering in Whin Sill, 105-14, pi. 519 ff.; Devonian, 467; Jurassic, 12 422 ff. WEIR, A. H., on the loess of eastern Transgressions, Devonian, 233-88, Yorkshire and Lincolnshire, 23-39 460, 485-6 Wenlock turbidites, Austwick, 201-2 Trilobites, Devonian, 475, ff., pi. 30 Wensleydale Granite, 191-4 TrimerocepAalus mastophthalmus, pi. 30 WESTOLL, T. S., discusses papers by Tropical areas, Devonian, 233-88 Collinson and Banks, 456; Dono• Turbidites, 201-2 van and Archer, 560 Twenty-five Foot Drift, 633 Whin Sill, 203, 206-7; weathering Twistleton Scars Limestone, 200 in, 105-14, pi. 12 Whita Formation, 134 ff. White Sandstone, 130, 132 Unconformities in Ingleton area, Wolstonian, 33 199, 200 WOOD, C. J., leads field meeting to Upper Cornbrash, 290 ff. South Humberside, 586-93 Upper Cromhall Sandstone, 623, WRIGHT, J. K., leads field meeting to 624 the Vale of Pickering, 207-10 Upper Grey Limestone, 491 ff. Yellow Sands, 203 Valanginian stage, 1,4, 16 ff. Yoredale Beds, 563 Vale of Eden, field meeting, 53-6 Yoredale delta lobe, 505-36, pis. Vale of Pickering, field meeting, 32-38 207-10 Yoredale limestones, correlation of, Vale of York, abandoned river 319-34, pi. 23; on Alston and courses, 223-32; Devensian ice Askrigg Blocks, 613-30, pi. 51 limit, 631-7; mineralogy and Yorkshire, abandoned river courses, geochemistry of Quaternary de• 223-32; geological lecture courses posits, 353-72; radiocarbon date in, 373-412; Jurassic, Boltby from,. 195-7 Moor, 289-95, Vale of Pickering, Vent, Curig Hill, 582 207-10; loess, 23-39; Permian Ventifacts, 631 ff. sabkha sequence, 639-52; Quater• VERSEY, H. C, on the history of nary, Vale of York, 353-72, Yorkshire geology, 335-52 631-7; radiocarbon date, 195-7; Visean stage, 41-7, 58-62, 63-104, Speeton Clay, 181-90; structure of 130, 132, 192, 206, 319-34, 563-5, Vis6an limestones, 41-8, 563-5; 613-30 water temperatures in limestones, Volcanic ash, in Carboniferous, 59 601-12; Wensleydale Granite, Volgian stage, 1 ff. 191-4; Whin Sill, 105-14; William Smith and Jurassic coals, 297-308; Yoredale limestones, WADGE, A. J., on the rubidium- 319-34, 613-30 strontium age and field relations Yorkshire geology, history of, 335-52 Washoutsof the, DurhaThrelkelm dCoalfield Mierogranite, 205 , Younger Glacial Sand and Gravel, Wate211-2r 2temperature s in Pennine Zechstei631 ff.n Sea, 642 linestone areas, 601-12 Zircon, 542