INDEX

Aberfoyle anticline, 59, 259, 275 Carbonatites, effusive, and alkaline Algal Beds, Gt. Estuarine Series, 160 volcanics, Nyiragongo, 21-3 Andalusite, Dalradian, Banffshire, Carbonatite-type volcanism, 1 47-51 Cam Chuinneag granite, zircons Amphibole, Dalradian, Banffshire, from, 352 54-5 Cam Mairg Quartzite, 167 Amphibolite dyke, Badcall, Suther­ Cation percentages, Mullaghduff land, 201-4 Porphyry Dyke, 69 Ardnarnurchan, Gt. Estuarine Series, Central Scotland, Millstone Grit, 159; Jurassic sediments, Ben Hiant, 439-85 323-4 Chemical Analyses, Arran, granites, 406; Old Red Alkali olivine basalt, Hawaii, 213 Sandstone and Highland Boundary Amphibolite dyke, Badcall, 363-425 Sutherland, 203 Bergalite, Kaiserstuhl, 10 Badcall, Sutherland, intrusions, 201-7 , Mt. Vulture, 10 BanfFNappe, 30, 57, 62 Clinopyroxene, Basalt, Mauritius, Banffshire Dalradian 29-64; strati­ 213 graphical succession, 32 , Olivine basalt, Fishnish Barrovian metamorphic zones, 57; Peninsula, Mull 210 -type metamorphism, Lower Doleritic basalt, Younger Series, Dalradian, Banffshire, 31 Mauritius, 213 Barytes, Arran, 416 Fused granite inclusion, Nyira­ Basaltic veins, Badcall, Sutherland, gongo, 11 205 Lava, Nyiragongo, 11 Ben Eagach Schists, 167 Leucitite Lavas, Nyiragongo, 13 Ben Hiant, Jurassic sediments, 323-4 MeliHte-nepheunite, Nyiragongo, Ben Lawers Schist, 167 11 Ben Lui (Kirkmichael) Syncline, 59, Melilitite lavas, Nyiragongo, 13 62 Mullaghduff Porphyry Dyke, 67 Schists, 167 Nepheline aggregate lavas, 13 Ben-y-Vrackie Synform, 272 Nepheline leucitite, Nyiragongo, Bergalite tuffs and lavas, Mt. 11 Nyiragongo, 1 Non-porphyritic Central Magma, Biotite, Dalradian, Banffshire, 42-3 Hebrides, 209 Blair Atholl Antiform, 271-2 Olivine basalt, Fingal's Cave, Bounce marks, 240 Staffa, 212 Boyndie Bay Groups, 35, 37, 43, Olivine basalt, Fishnish Peninsula, 45, 47, 52, 53, 61 Mull, 210 Boyndie Syncline, 29, 30, 31, 34-5, , 1921 lava, Kilauea, 203 37, 40, 57, 59, 62 , Portree, Skye, 212, 213 Boyne Lag, 30 , Younger Series, Mauritius, BRUCK, P. M. and P. McL. D. 213 DUFF, Jurassic sediments, Ben Plateau Magma type, Hebrides, 209 Hiant, Ardnarnurchan, 323-4 Porphyritic Melilite-leucite- Buchan Anticline, 30, 34, 57, 59, nephelinite, Nyiragongo, 11 62; metamorphic zones, 57; type nephelinite-kalsilite-melilitite, metamorphism, Upper Dalradian, 11 Banffshire, 31 Tholeiite (NPC type), North of England dykes, 212 Calciferous Sandstone Measures, East Cephalaspis scotica, sp. nov. 316 Fife, 133-8 Chevron marks, 109, 291 496 INDEX 497

Cockburn Land, 248 Diffusion processes, material transfer, Coillebrochain Fold, 266, 268, 274, 65, 74-81 275 Distribution of ions, MullaghdufT Collessie moraine, 122-8 Porphyry Dyke, 72-3 Conditions of deposition, Wenlock- Dolerite dyke, Badcall, Sutherland, ian, Hawick, 244-6 205 Cordierite, Dalradian, Banffshire, 52 DUFF, P. Mc. L. D. and P. M. Correlation of structural and meta­ BRUCK, Jurassic sediments, Ben morphic histories, Dalradian, Hiant, Ardnamurchan, 323-4 Banftshire, 56 Durn Hill Quartzite, 34, 55 Cowhythe Gneiss, 33, 41, 42, 44, DzuLYNSKi, ST. and E. K. WALTON, 45, 52, 54, 55 Experimental production of sole CRAIG, G. Y. and E. K. WALTON, markings, 279-305 Sedimentary structures and Palaeo- current directions, Silurian, Kirk­ EARP, J. R., E. H. FRANCE and cudbrightshire, 100-19 W. A. READ, Discussion, Late- Crathie Point Group, 43 glacial Shore-lines, 216-224 Creag na hlolaire Anticline, 275 Eigg, Gt. Estuarine Series, 152-8 Cross girdles, Glen Lyon rocks, 177 Esker-like body, Collessie, Fife, 122 Crushed rocks, Arran, 413 Explosion Breccias, Stob Mhic Crystallisation-differentktion, 65, Mhartuin, Glen Coe, 426-38 74-81 Cullen Quartzite, 42-4 Felspathoidal rocks, Nyiragongo, 5-9 Current bedding, Silurian, 101, 112; Fleur-de-lys patterns, 103-5 superficial deposits, Fife, 124; Flinty crush-rock, Glen Coe, 427 directions, Hawick rocks, 241-3; Flow casts, 240 markings, Silurian, 103, 109; Flute marks, 240; pattern, 102,107 structures, Torridonian, Rhum, Fluvioglacial deposition, Peeblesshire, 489 335, 343; erosion, Peeblesshire, 333, 341 Dalradian, Banffshire; correlation of Forth area, raised shore-lines, 90 structural and metamorphic his­ FRANCIS, E. H., J. R. EARP and tories, 56; F2 folds, original W. A. READ, Discussion, Late- orientation, 41-2; metamorphic glacial shore-lines, 216-24 history, 42-55; regional com­ FRIEND, P. F., W. B. HARLAND and parison, 59-63; structural history, J. D. HUDSON, Old Red Sandstone 31-41; time scale, 57-9 and Highland Boundary, Arran, Dalradian, Glen Lyon; fold styles, 363-425 168; megascopic fabric, 169-71; Frondescent marks, 291-5 microscopic fabric, 171-98 Dalradian, Pitlochry and Blair Atholl; faulting, 274; foldsN.W. Garnet Dalradian, Banffshire, 43-6 of Vertical Belt, 271-2; folds of Gas transport and emission of silica, Vertical Belt, 266-71; sliding, 24-5 2724 Glacial deposition, Peeblesshire, 330, DALZDBL, I. W. D., 2focons from 341; erosion, Peeblesshire,328,340 granitic gneiss, W. Ardgour 349-62 Glen Coe, explosion breccia and Deformation structures, Dalradian, flinty crush-rock, 426-38 Banffshire, 36 Glen Lyon, Dalradian, 166-200 Deltoidal casts, 240 Grain orientation in quartzose rocks, Dendritic ridges, 280-4 Glen Lyon, 184-5 Differentiation and pedogenesis, Mt. Great Estuarine Series, Inner Nyiragongo, 19-25 Hebrides, 139-65 498 INDEX

Greywackes, micrometric analysis, KNOX, J., Strand lines, Howe of Fife, 232-6; microscopic characters, 120-32 227-32; provenance, 236-7 Kyanite, Dalradian, Banffshire, 52-4 Groove marks, 240 Late-glacial shore-lines, Forth area, HARDIE, W. G., Explosion Breccias, 83-99; Howe of Fife, 120-32 Stob Mhic Mhartuin, Glen Coe, Lava of lava lake, Nyiragongo, 16 426-38 Lawers Syncline, 59 Leucitites, Nyiragongo, 1,15-6 HARLAND, W. B., P. F. FRIEND and Lewisian, intrusions in, 201-7 J. D. HUDSON, Old Red-Sandstone and Highland Boundary, Arran, Linear structures, Dalradian, Glen 363-425 Lyon, 170-1 HARRIS, A. L., Structural Investi­ Load structures, 295-8 gations, Dalradian, Pitlochry and Loch Lomond Readvance, 87-8 Blair Atholl, 256-78 Loch Tay Fault, 274; Inversion, Hawick rocks, 100-1, 114-6, 246-7 275; Nappe, 275-7 Heavy minerals, Scottish Millstone Loch Tummel Fold, 266, 275 Grit, 449-72 Longitudinal furrows, 285 Hebridean Plateau Magma Type, Longitudinal ridges, 102-5, 240, 285 208-15 Highland Boundary, Arran 363-425; Macduff Group, 35, 43, 48, 61, 62 Fault, 416-9 Machrie Shore section, Arran, 379 Howe of Fife, strand lines, 120-32 Marginal drainage channels, Howe of HUDSON, J. D., Great Estuarine Fife, 125-6 Series, Inner Hebrides, 139-65 Material transfer, diffusion processes, , P. F. FRIEND and W. B. HAR­ 65, 74-81 LAND, Old Red Sandstone and Meall Uaine Fold, 266, 268, 275 Highland Boundary, Arran, Melilitite tuffs and lavas, Nyiragongo, 363-425 1 Hummocky moraine, Collessie, Fife, Melilitites (bergalites), Nyiragongo, 122-3 13-5 MERCY, E. L. P., Mullaghduff Porphyry Dyke, 65-82 Utay Boundary Slide, 274 Microfabric studies, Dalradian, Glen , Nappe, 167, 259 Lyon, 166-200 Inchbae augen gneiss, zircons from, Middle Littorina transgression, 88 352 Migmatisation, Dalradian, Banff­ Inner Hebrides, Gt. Estuarine Series, shire, 30 139-165 Migmatitic felspar, 55 Interference ripple marks, 240 Millstone Grit, Central Scotland, Isostatic recovery, Scotland, 87-9; 439-85 Stirling, 89 Mimetic dimensional orientation, Dalradian, Glen Lyon, 197-8 JOHNSON, M. R. W., Movement and Modal analyses, Old Red Sandstone, metamorphism, Dalradian, Banff­ Arran, 400 shire, 29-64 Modified ripple marks, 106 Jurassic sediments, Ben Hiant, 323-4; Moine metasediments, zircons from, Inner Hebrides, 139-65 352 Morainic mounds, Howe of Fife, 122-5 Kalsilite phase, Mt. Nyiragongo, 5-9 Mount'Baruta, 2, 4 Katungite blocks, Gatwe crater, 7 Mount Nyiragongo, petrology, 1-28 INDEX 499

Mount Shaheru, 2, 4 Pseudo-nodules, 240 Muck, Gt. Estuarine Series, 158-9 Pseudo-sedimentary structures, 102 MUTR, I. D. and C. E. TILLEY, Pteraspis mitchelli, 307-15; and assoc­ Hebridean Plateau Magma Type, iated fauna 315-20 208-15 Mum, R. O., Petrography and Pro­ Quartzose rocks, Glen Lyon, grain venance, Millstone Grit, Central orientation, 184-5 Scodand 439-85 Mull, Gt. Estuarine Series, 160 MullaghdufF Porphyry Dyke, 65-82 Raasay, Gt. Estuarine Series, 147-9 RAMSAY, D. M., Microfabric studies, Dalradian, Glen Lyon, 166-200 Nepheline aggregate lavas, Nyira- READ, W. A., J. R. EARP and E. H. gonga, 16 FRANCIS, Discussion, Late-glacial Nephelinites, Nyiragongo, 16 shore-lines, 216-24 Nodule trails, 108 Reticulate pattern, 103-4,107 Norite dyke, Badcall, Sutherland, 204 Rhum, Torridonian, 486 Riccarton Beds, 100,114-6; deposit­ O'HARA, M. J., Intrusions in Lewisian ion of, 245-6 Complex, Badcall, Sutherland, Rill marks, Silurian, 105,109 201-7 Ripple marks, modified, 106-8 Old Red Sandstone, Arran, 363-425; Rosses Granitic Ring Complex, 65 correlation and variation, 390-2; geological history, 419-21; petrol­ SAHAMA, TH. G., Petrology, Mt. ogy, 393-406; stratigraphy, 367-92 Nyiragongo, 1-28 , Bridge of Allan and Newtyle, Sand Volcanoes, 240 fauna, 306-22 Sannox Shore section, Arran, 388 Olivine leucitite, Muja, 7 Scaly ridges, 103-5 100 ft. beach, relation to ice margins, Schichallion Synform, 276 94 Scottish Millstone Grit, heavy Orthocone prod marks, 111-2 minerals 449-71; petrography 443-9; provenance, 472-82 Palaeocurrent directions, Silurian, Scour markings, experimental 284-7; Kirkcudbrightshire, 113-9 Silurian, 102-3 Palaeogeography, Wenlockian, Securiaspis caledonicus sp. nov. 319-20 Hawick, 247-50 waterstoni sp. nov. 317-9 Pebbly rocks, Dalradian, Glen Lyon, Sedimentary structures, Silurian, 179-90 Kirkcudbrightshire, 100-19; Tor­ Peeblesshire, glaciation of part of ridonian, Rhum, 487; Wenlock­ 325-48 ian, Hawick, 238-43 Perth Readvance, 87-89, 96-97 Sgurr Dhomhnuill granitic gneiss, Pit and Mound structures, 240 zircons from, 352 Pidochry and Blair Atholl, Dalradian Shore-lines, Late-glacial, 83-99, 256-78 120-32, 216-24 Plagioclase-amphibolite dyke, Bad- Sillimanite, Dalradian, Banffshire, 54 call, Sutherland, 204 SISSONS, J. B., Late-glacial shore­ Planar structures, Dalradian, Glen lines in Scotland, 83-99 Lyon, 169-70 , Reply to discussion, 221-4 Portsoy Group, 34, 54; Igneous Skip marks, 240 Mass, 54-55 Skye, Gt. Estuarine Series, 146, 152 PRICE, R. J., Glaciation of part of Sole markings, experimental Peeblesshire, 325-48 279-305; genetic relations, 299; Prod marks, 240 Silurian, 101-2 500 INDEX

Sron Mhor Syncline, 275 WALTON, E. K. and G. Y. CRAIG* Staurolite, Dalradian, Banffshire, Sedimentary structures and Palaeo- 46-7 current Directions, Silurian, Kirk­ Stob Mhic Mhartuin, explosion cudbrightshire, 100-19 breccias, 426-38 and ST. DZULYNSKI, Experi­ Strathaird, Gt. Estuarine Series, 150 mental production of Sole Mark­ Strontian granite, zircons from, 352 ings, 279-305 WARREN, P. T., Petrography, sedi­ mentation and provenance of TULEY, C. E. and I. D. Mum, Wenlock rocks near Hawick, Hebridean Plateau Magma Type, Roxburghshire, 225-55 208-15 WATTTSON, A., Temporary exposures, Time scale, Dalradian, Banffshire, Calciferous Sandstone Measures, 57-9 East Fife, 133-38 Tool marks, artificial, 289-91; WELSH, W., Sedimentary features, Silurian, Kirkcudbright, 109-12 Torridonian, Rhum, 486 Torridonian, Rhum, 486 Wenlock Rocks, Hawick, deposition Trace elements, amphibolite dyke, 244-6; palaeogeography, 247-50; Badcall,203 petrography 227-37; sedimenta­ Transverse ripples, 100-1, 240 tion, 238-41 Trotternish, Gt. Estuarine Series, Western Ardgour, zircons from, 143-7 349-62 Turbidity currents, artificial, 284-95 West Sands Bay Group, 43-4 WHITE, Enrol I., Pteraspis mitchelli Vein Quartz in Dalradian, Glen and its associated fauna 306-22 Lyon, 194-7 Whitehills Group, 35, 37, 43, 53, 61 Vertical Belt, Perthshire, 259,266-71, 274-5 Zircons, from granitic gneiss, W. Virunga volcanic field, 1-28 Ardgour, 349-62 VOLUME 19, PART 4 DECEMBER 1963

TRANSACTIONS of the Edinburgh Geological Society

CONTENTS R. J. PRICE: The Glaciation of a Part of Peeblesshire, Scotland, page 325

IAN W. D. DALZIEL: Zircons from the Granitic Gneiss of Western Ardgour, Argyll; Their Bearing on its Origin, page 349

P. F. FRIEND, W. B. HARLAND and J. D. HUDSON: The Old Red Sand­ stone and the Highland Boundary in Arran, Scotland, page 363

W. G. HARDIE: Explosion-Breccias near Stob Mhic Mhartuin, Glen Coe, Argyll, and their Bearing on the Origin of the enarby flinty Crush-Rock, page 426

RICHARD O. MUIR: Petrography and Provenance of the Millstone Grit of Central Scotland, page 439

W. WELSH: Sedimentary Features of the Rhum Torridonian, page 486

RECORDS OF PAPERS AND EXHIBITS, page 493

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