Index

References to figures and tables are printed in italics. acoustic impedance analysis 95-7 Faeroe-RockaU Plateau 145--6 Aegir Ridge 272, 278 basaltic aegirine 190 Faeroe Island Shelf 182, 184-5, 189, 192-3 Amazon Cone 200, 201,203 correlation with North Sea 193-4 amphibole 189, 190 Bear Island Trough Mouth Fan 173 amplitude of seismic signal Ben Nevis Formation 6, 7, 19 Galicia margin studies 76-8, 97-9 Bill Bailey Bank analogue modelling basement 126-9 lithospheric stretching 86-7 sediment deformation 133-4 Antarctic Bottom Water (AABW) 208-12 seismic stratigraphy 129-32 Antarctissa whitei 220 setting 125, 272 Anton Dohrn Seamount 161, 272 subsidence history 134-7 apparent uplift/erosion 262 biostratigraphy Arctic Bottom Current 154-5, 155 (North) radiolaria 217-20 Argo Formation 5, 7 Faeroe Island Shelf sediments 186, 187-8, 189, 190, Ascension Fracture Zone 200, 201 192 aseismic ridges 281 St Kilda Basin 232-3 Atlantic Ocean (Equatorial) biotite 190 bathymetry 201 bioturbation 16, 192 palaeoceanography Biscay, Bay of 274 207-8 Bjorn Drift 272 Jurassic-Cretaceous 199-201 Blosseville Group 191 Tertiary 208-12 Bonnition basin 4 plate reconstructions 203-7 break-up unconformity 1, 2, 78 seismic stratigraphy 201-3 burial depth studies 258-61 Atlantic Ocean (North) continent-ocean boundary 273-7 palaeobathymetric reconstruction 271-2 14C dating uncertainties 227, 241-3 backstripping methods cap rocks, Faeroe-Shetland basin 67 isostasy effects 288-9 Catalina Formation 7 removal of sediment 284 Ceara Abyssal Plain 200, 201 sea level effects 288 Ceara Rise 200, 201 sediment decompaction 285 Central Ridge 54 thermal subsidence effects 286-7 Chain Fracture Zone 200, 201 boundary conditions used Chalk Group 255 lithosphere thermal age 272-3 Charlie Gibbs Fracture Zone 276 plate boundaries 273-7 Chemehuevi detachment 98 plate reconstruction 277-9 CIPW norm 237 sea level 273 Clair basin 53 stratigraphy and lithology 272 Clair Ridge 53 lithosphere age reconstruction 281-4 clinopyroxene 182, 189, 192 lithosphere subsidence effects 280-1 coal, Faeroe-Shetland basin 65 previous research methods 279-80 collophane 189 results of reconstruction 289-97 compaction analysis, Moray Firth (Inner) 253-8 plate setting 277-9 compression Avalon Formation 6, 7, 19, 20 events in Faeroes 153, 155 Norwegian Sea 195 backstripping 271,280, 284 in lithosphere 265-6 application to N Atlantic reconstruction 284-9 structures in Faeroe- 142, 215-16 Balder event 65 continent--ocean boundary Balder Formation 191, 193 Galicia margin Balder Tufts 65 segmentation 72-6 Banff fault 250, 254 structural analysis Banquereau Formation 7 methods 76-8 Barra Fan 161,163 results volcanism 275 lower layers 79-82 Faeroe Islands 125, 134 seismic Moho 82-5 304 INDEX

upper layers 78-9 Edoras Bank 272 results discussed 85-8 Eirik Drift 272 GIN Sea 273-7, 287 Eocene Cretaceous Atlantic Ocean (Equatorial) Atlantic Ocean (Equatorial) circulation 209 circulation 207-8 reconstruction 206 reconstruction 204, 205 sediments 202 sediments 202 Atlantic Ocean (North) reconstruction 293, 294, 297 Atlantic Ocean (North) extension 277 Bill Bailey/Lousy Banks subsidence 134, 137 Jeanne d'Arc basin 6, 7, 33, 45-7 Faeroe Bank Channel 155 deformation 11-12 Faeroe Island Shelf dredge 189, 189-90 unconformities 14-19 regression evidence 195 lithosphere rifting 72 transgression evidence 194-5 Porcupine basin 33, 45-7 Faeroe Plateau and Channel sediments 149-50, 153 seafloor spreading 4, 23-5 Faeroe-RockaU Plateau compression 215 Cretaceous rifting model Faeroe-Shetland basin, stratigraphy 65-6 North Atlantic/GIN Sea reconstruction 298-97 GIN Sea reconstruction 293, 294, 297 Cromer Knoll Group 256 Eocene- boundary crustal studies Lousy/Bill Bailey Bank subsidence 135, 137 Galicia margin unconformity 132-3 ocean-continent boundary segmentation 72-6 Eriador Seamount 272 structural analysis erosion studies methods 76-8 Moray Firth (Inner) results compaction analysis 253-8 lower layers 79-82 driving mechanisms 264--6 seismic Moho 82-5 uplift analysis 261-4 upper layers 78-9 vitrinite reflectance data 258-61 results discussed 85-8 Eurydice Formation 5, 7 GIN Sea 287 continent-ocean boundary recognition 273-7 see also lithosphere facies analysis Cuillin Package 64 Jeanne d'Arc basin 36-41 currents, Faeroe-Rockall area 141-3 Porcupine basin 44-5 Cycladophora davisiana 219 Faeroe Bank 125, 272 Faeroe Bank Channel 142, 145, 148, 161, 272, 289 Eocene 149-50, 153, 155 Dawson Canyon Formation 7 151 Dead Mountains detachment fault 98 Oligocene 150 decompaction effects 271,280, 284, 285 Recent 153 Demerara Abyssal Plain 200, 201 Faeroe Block Demerara Plateau 200, 201 continental thickness 276, 287 Denmark Strait 272, 289, 296, 297 Palaeocene-Eocene boundary 191 detachment faults 93, 104-5 reflector sequence 194 Devensian see also Faeroe Island Shelf NW Britain slope-aprons 163, 165 Faeroe Channel Knoll 147, 148, 153, 155 diatoms, Palaeocene 60 Faeroe Channel Knoll Escarpment 147, 148 dinoflagellates Faeroe Channel Knoll Plateau 149 Faeroe Island Shelf dredge haul 186, 187-8, 189, Faeroe Drift 272 190, 192 Faeroe Islands St Kilda Basin 232-3 basalt 125, 134, 146-8, 215 Voring Plateau 194 seismic study of basalt 112-22 domino fault block model 103 setting 111-12 Downing Formation 7 Faeroe Islands Platform dredge haul studies basaltic basement 146-8 Faeroe Island Shelf sediment stratigraphy methods of sampling 179-80 Eocene 149-50 results of analysis 181-4 Miocene 151 sample ages 184-92 Oligocene 150-1 results discussed 192-5 Pliocene 151 Dunrobin Group 256 Recent 153 sediment thickness 148-9 setting 145-6 East Faeroe High 147, 149 Tertiary evolutionary history 153-7 Eastern Shoals Formation 7 Faeroe Islands Shelf 160, 272 INDEX 305

dredge haul study 179-95 Porcupine basin 43 setting 179 Gardar Drift 272 see also Faeroe Block gas, Faeroe Islands 112 Faeroe Ridge 289 Geikie Escarpment 161,162, 163, 164 Faeroe-Rockall Plateau 142, 215-16 geochemistry Faeroe~Shetland Basin Faeroe Island Shelf dredge haul 183-4, 185, 189 correlation with North Sea 66-7 St Kilda Basin tephrochronology study hydrocarbon prospectivity 51, 67-8 methods 229-30 plate tectonic environment 54-5 results 233-5, 244-6 seismic mapping 56-7 George Bligh Bank 272 sequence stratigraphy 55-6, 58-66 GIN (Greenland-Iceland-Norwegian) Sea 271 setting 52-4 palaeobathymetric reconstruction 271-2 structure 57-8 backstripping effects 284-9 Faeroe~Shetland Channel 142, 145, 148, 155, 160, boundary conditions used 272-9 161, 272, 289 lithosphere age reconstruction 281-4 dredge haul 184 lithosphere subsidence effects 280-1 evolution previous research methods 277-9 Cretaceous 125 results of reconstruction 289-97 Eocene 149-50 see also Greenland Sea; Iceland Sea, Norwegian Sea Miocene 151 glacigenic sedimentation see ice-sheet sedimentation Oligocene 150 glauconite 182, 192 Pliocene 151, 165 Gloria Drift 272 Recent 153 Goban Spur 274 palaeobathymetric reconstruction 289, 295, 296, 297 Grand Banks-Iberia seafloor spreading 4 Faeroe-Shetland Escarpment 147, 148, 153, 272 Great Glen fault 250, 251, 253, 254 seaward dipping reflector 275 Greenland (East) fans see slope-aprons continent-ocean boundary 276 feldspathic sandstone 182, 190-2 marginal fans 173 Fladen Group 256 Palaeocene-Eocene boundary 191 Flett Ridge 54 Greenland Sea 271 flood 275 see GIN Sea foraminifera Greenland-Norway Sea see Nordic Seas Atlantic Ocean (Equatorial) 207 Greenland- Ridge 276-7, 278, 297 Faeroe Island Shelf 182, 192 Grimsvrtn 241 Faeroe-Shetland Basin 58, 61, 65 Guinea Fracture Zone 201,202 St Kilda Basin 232-3 Guinea Plateau 200, 201 Fortune Bay Formation 7 Foula Wedge 161-2, 163, 172 Four North Fracture Zone 200, 201 Halibut Horst 250 Fugloy Ridge 147, 149, 150 Hatton Bank 272, 287, 289, 295, 296, 297 Fur Formation 193 Hatton Drift 272 Hatton- 277 Heather Formation 256 Galicia margin heavy mineralogy, Faeroe-Shetland basin 63-4 crustal structure Shelf 160, 161, 163 enigmatic terrane (ET) 79 Hebrides slope-apron method of analysis 76-8 lithology 168-71 results 78-85 setting 160-2 results discussed 85-6 time of formation 162-3 summary of characteristics 88-9 Hebrides Terrace Seamount 161, 272 modelling formation 86-8 Helmsdale fault 250, 251, 253, 254 OCB segmentation 72-6 Hibernia Formation 6, 7 S reflector study Hidra Formation 255, 256 amplitude 97-9 Hod Formation 255, 256, 257 analysis of polarity and waveform 95-7 hot spots 54-5, 62, 65, 265, 275, 281 relationships with faults 99 hydrocarbons, Faeroe Islands 112 results 101-5 relationships with peridotite ridge 105-7 significance of 94-5 Iberia Abyssal Plain 72 summary of features 107-8 Iberia~3rand Banks, seafloor spreading 4 Gambia Abyssal Plain 200, 201 ice-rafting 159, 184, 236 gamma ray logs ice-sheet sedimentation Jeanne d'Arc basin 40 slope-aprons 159 Moray Firth (Inner) 256 NE Atlantic 173-4 306 INDEX

NW Atlantic 174 thickening, role in uplift/erosion of 264 NW Britain 160-5, 168-72 Lopra- 1 well 112 Iceland, formation in 238-9, 240-1 Lossiemouth fault 250, 254 265 Lousy Bank (Outer Bill Bailey Bank) 272, 297 Iceland Plateau 272 basement 126-9 Iceland Sea 271 sediment deformation 133-4 radiolarian abundance 220 seismic stratigraphy 129-32 see also GIN Sea setting 125 Iceland-Faeroe Ridge 272, 276, 277, 281,287, 295, 296 subsidence history 134-7 ichnofacies 16 low angle detachment faults 93, 104-5 ilmenite 182, 189 inertinite 189 Inner Moray Firth see Moray Firth (Inner) magrnatism, Porcupine basin 33 intraplate stress 265 mantle lithosphere compression 265-6 Irminger Basin 272, 295, 296, 297 Marl Formation 255 Iroquois Formation 7 Mascarene Plateau 281 Isengard Drift 272 Mercury border fault 5, 9 Ist]orden Fan 173 Mexico, Gulf of 280 isopach map, Jeanne d'Arc basin 22, 32 microflora, Faeroe--Shetland basin 58, 61-2, 64, 65 Ivory Coast Rise 200, 210 Miocene Arctic Bottom Current 155 Atlantic Ocean (Equatorial), sediments 202 Jan Mayen microplate 277-8 Faeroe Bank Channel 142, 155 Jan Mayen Ridge 272, 289, 295, 296, 297 Faeroe Plateau and Channel sediments 142-3, 151, Jeanne d'Arc basin 154 correlation with Porcupine basin 45-7 Faeroe-RockaU Plateau compression 216 deformational history 12-14 GIN Sea/N Atlantic reconstruction 290, 291, 295-6 extension 23 Lousy/Bill Bailey Bank unconformity 133, 135, 137 facies analysis 36--41 slope-apron sediments 161 initiation 30 Wyville-Thomson Ridge 142, 155 lithostratigraphy 7, 31 Ymir Ridge 142 sedimentary thicknesses 21-2 modelling sequence and lithology correlation 14-19 Cretaceous rifting model sequence stratigraphy 8-12 North Atlantic/GIN Sea reconstructions 289-97 setting 4-6 lithosphere extension 93-4 subsidence history 19-21, 33-6 lithosphere stretching 86-7 Jeanne d'Arc Formation 6, 7 Palaeocene reheating model Judd fault 54 North Atlantic/GIN Sea reconstructions 289-97 Jurassic seismic 118-20 Atlantic Ocean (Equatorial), sediments 202 Moho Jeanne d'Arc basin sedimentation 6, 7 scattering reflective 85 Scotian basin 4 seismic 82-5 molluscs, St Kilda Basin 232, 233 Montrose group 256 Kane Gap 200, 201,208, 211 Moray Firth (Inner) Kap Dalton Formation 191 basin inversion 249-50 Katla 241 erosion history kerogen, Faeroe-Shetland basin 64, 65 driving mechanisms 264-6 Kimmeridge Formation 255, 256, 257 Sediment compaction data 253-8 Kintail Package 64 uplift analysis 261-4 Kolbeinsey Ridge 272 278, 295, 296, 297 vitrinite reflectance data 258-61 extensional reactivation 250-1 regional tilting 252 Labrador Slope 174, 175 strike-slip reactivation 251-2 last glacial maximum (LGM) 228 Munkegrunnur Ridge 147, 149, 150, 215 lithic volcanic sandstone, Faeroe Island Shelf 182, Murre border fault 5, 9 190-2 lithosphere age calculation 281-4 Nautilus fault 34 compression 265-6 Nautilus Formation 7 extension modelling 93-4 Newfoundland offshore 274 stretching 86-7 Newfoundland Basin 88 subsidence 280-1,286-7 Newfoundland Slope 174, 175 thermal age 272-3 see also Jeanne d'Arc basin INDEX 307

Niger Cone 203 previous research methods 279-80 nontronite 182 reconstruction results 289-97 Nordic Seas currents 141-2 Palaeocene North Atlantic see Atlantic Ocean (North) Atlantic Ocean (Equatorial) North Atlantic Ash Zone 237-8 reconstruction 206 North Minch tephra 239 sediments 202 North Sea Atlantic Ocean (North) volcanism 289 Palaeocene-Eocene boundary 191 Bill Bailey/Lousy Banks basalt lavas 134 system 265 Faeroe Islands tuff correlations 193-4 coastline 148 Norway Basin 272 shelf dredge haul 189 Norwegian Sea 153, 154, 271 volcanism 153 Eocene plate setting 195 Faeroe-Shetland basin Miocene 151 hydrocarbon prospectivity 51 Oligocene 150, 154 plate setting 54 Plio-Pleistocene radiolaria 218, 219 sequence interpretation 58-65 see also GIN Sea stratigraphy 55-6 Norwegian~3reenland Sea 173-4 Rockall-Faeroe-Greenland breakup 125 Palaeocene reheating model North Atlantic/GIN Sea reconstruction 289-97 ocean-continent boundary Palaeocene-Eocene boundary 191 Galicia margin study palaeoenvironment analysis crustal structure Jeanne d'Arc Formation 14-19 methods of analysis 76-8 Palaeophycus tubularis 192 results 78-85 palagonite 182, 185, 190 results discussed 85-6 passive margins modelling formation 86-8 characteristics 1-2, 71 segmentation 72-6 see Galicia margin summary of characters 88-9 Peridotite Ridge 94, 105-7 GIN Sea 273-7, 287 Pernambuco Abyssal Plain 200, 201 oceanography phosphoritic pelletstone 182, 189, 190 Atlantic Ocean (Equatorial) plagioclase 182, 185, 190, 192 Cretaceous 207-8 plant fossils 189, 190 Tertiary 208-12 plate tectonics oil in Faeroe Islands 112 characteristics of plate margins 93 Oligocene Eocene plate reorganization 195 Atlantic Ocean (Equatorial) reconstructions for North Atlantic circulation 211 gridding technique 281-4 reconstruction 206, 207 past 277-8 Atlantic Ocean (North) 292, 296 present 278-9 Bill Bailey/Lousy Banks 137 Pleistocene Faeroe Bank Channel 155 radiolaria 223 Faeroe Island Shelf dredge 190-2, 195 see also Quaternary Faeroe Plateau and Channel sediments 150-1, 154 Plenus Formation 255 Faeroe-Rockall Plateau compression 215 Plio-Pleistocene GIN Sea 292, 296 NW Britain slope-aprons 161, 162, 163-5 NW Britain radiolarian zones 218, 219-20 erosion features 161 Pliocene slope-apron sediments 161 Faeroe Bank Channel 155 Orphan basin 4 Faeroe Plateau and Channel sediments 151-2 ostracods, St Kilda Basin 232-3 unconformity 133 Outer Bill Bailey Bank see Lousy Bank polarity analysis 95-7 pollen analysis 189, 190 P waves Porcupine Abyssal Plain 272 Faeroe basalt study Porcupine basin reflected 117-18 correlation with Jeanne d'Arc basin 45-7 transmitted 116-17 facies analysis 44-5 Pacific Ocean lithosphere 281 initiation 30 palaeobathymetry of GIN Sea and North Atlantic lithostratigraphy 31 reconstruction methods 271-2 subsidence 42-4 backstripping processes 284-9 porosity 285 boundary conditions used 272-9 pre-stack depth migration lithosphere age effects 281-4 method 100-1 lithosphere subsidence effects 280-1 results 101-5 308 INDEX pyroclastics 275 S waves Faeroe basalt study reflected 117-18 Q factor 77 transmitted 116-17 Quaternary St Kilda Basin climatic fluctuations 227, 228, 242 core sample analysis 231 Devensian slope-aprons 163, 165 biostratigraphy 232-3 Faeroe Island Shelf sediments 179 lithostratigraphy 231-2 St Kilda tephrochronology 233-5 tephrochronology 233-5 correlation 236-41 core sample dating 241-3 transport 235-6 core sample interpretation Younger Dryas 228-9, 239, 240, 242 tephra correlation 236-41 tephra transport 235--6 setting 230-1 radiolaria St Paul Fracture Zone 200, 201 Faeroe-Shetland basin 60 Salar basin 4 latitude effects on 217-19 scattering reflective Moho (SRM) 85 North Atlantic zones 219-20 Scoresby Fan 173 palaeoceanography 220-2 Scoresby Sund 272 Rankin fault 34 Scotian Slope 174 Rankin Formation 6, 7 sea level curves, reconstruction of 273, 288 reflectivity, seismic 77 seafloor spreading reflector sequence, Faeroe Island Shelf 149, 153, 194 Grand Banks-Iberia 4, 23-5 reheating model, Palaeocene 289-97 relation to unconformities 3 reservoir character, Faeroe-Shetland basin 67 seal rocks, Faeroe-Shetland basin 67 Reykjanes Ridge 272, 295, 296 seaward dipping reflectors 274-6 ridge push 216 Faeroe Island Shelf 149, 153, 194 rifted margins 93 segmentation, OCB 72-6, 88 rifting seismic methods Cimmerian Faeroe basalt study Jeanne d'Arc basin 33 data acquisition 112-15 Porcupine basin 33 data processing 115-16 Palaeocene-Eocene interpretation 11 6-18 North Atlantic 264-5 modelling 118-20 Triassic results discussed 121-2 Jeanne d'Arc basin 30 seismic Moho 82-5 Porcupine basin 30 seismic refraction 76 rifting model, Cretaceous 289-97 seismic reflectors (S reflectors) Rio Grande Rise 281 Galicia margin 79-82, 85-6 Rockall Bank 272, 276, 287, 289, 295, 296, 297 seismic sections Rockall Plateau 125, 160, 272 Bill Bailey Bank 127, 128 Palaeocene-Eocene boundary 191 Faeroe Bank Channel 155, 156, 157 reflector sequence 194 Faeroe Bank-Bill Bailey Bank 141 seaward dipping reflector 275-6 Faeroe Island Shelf 181 Rockall Trough 125, 160, 161, 272, 277, 287, 295, 296, Faeroe Plateau 151, 152 297 Faeroe-Shetland Channel 154 Rockall-Faeroe microcontinent 125 Galicia margin 75, 80, 82, 83, 84 Romanche Fracture Zone 200, 201 Jeanne d'Arc basin 8, 10, 11, 13, 39 Romanche Transform 200, 201 Lousy Bank 127 Rona Ridge 53 Moray Firth (Inner) 250, 251, 252, 253, 254 Rona Wedge 161-2, 163, 172 Porcupine basin 43 Rosemary Bank 272 seismic signal amplitude analysis 76-8, 97-9 rutile 190 seismic velocities 76, 77 sequence stratigraphy Faeroe-Shetland basin 58-66 S reflector Jeanne d'Arc basin 8-12, 14-19, 36-41 analysis of Porcupine basin 44-5 amplitude analysis 97-9 sideromelane 182 polarity waveform analysis 95-7 Sierra Leone Abyssal Plain 200, 201 relationships with Sierra Leone Rise 200, 201 faults 99 Sigmundur Seamount 142, 143 peridotite ridge 105-7 similarity coefficients 236-7 significance of 94-5 Sinclair Horst 250 summary of features 107-8 Sk6gar tephra 238-9 INDEX 309 slope-aprons recognition at passive margins 1-2 introduction 159 Jeanne d'Arc basin studies NE Atlantic 173-4 Albian 18-19 NW Atlantic 174 Aptian 16-18 NW Britain 160-5, 168-72 Barremian 14-16 smectite 182, 192 Tertiary Snorri Drift 272 East Greenland 195 solidity 284, 285 Faeroe Plateau 155, 195 sonic logs Faeroe-Rockall 141 Jeanne d'Arc basin 40 uplift studies, Moray Firth (Inner) 261-4 Moray Firth (Inner) 256 Upwelling Radiolarian Index (URI) 222 Porcupine basin 43 upwelling zones 222 South Iceland Basin 272, 295, 296, 297 Spain see Galicia margin Sphaeropyle langii 220 Vedde ash 238-9 Stichocorys peregrina 220 Veidiv6tn 240-1 Strakhov Fracture Zone 200, 201 Vema Fracture Zone 200, 201,209 Stylatractus universus 219 vertical seismic profile (VSP) 112, 115, 116 Sula Sgeir Fan 161,162, 163, 166, 167, 168, 175 Victory basin 53 surface seismic profile 112, 115 Victory Ridge 53 Sutherland Terrace 251-2 Vigo seamounts 73 vitrinite reflectance 252, 258-61 volcaniclastics tachylite 182, 185 Faeroe Island Shelf dredge study tephrochronology basaltic tufts 184-9, 192-3 applications in St Kilda Basin 233-5 lithic volcanic sandstones 190-2 tephra correlation 236-41 tuffaceous limestones 189-90 tephra transport 235-6 volcanism, basaltic 275 principles 227-8, 229 Faeroe Islands 125, 134 terrane analysis 79 Faeroe Island Shelf 182, 184-5, 189, 192-3 Tertiary Faeroe-Rockall Plateau 145-6 Faeroe channels 148-51 Voring Plateau 275 Faeroe-Rockall Plateau Palaeocene-Eocene boundary 191 basalts 145-6 reflector sequence 194 sediments 145-6 Voyager Formation 7 Great Glen fault 251 Jeanne d'Arc basin 7 Moray Forth (Inner) walk-away vertical seismic profile 112, 114, 116 erosion 253-61 Walvis Ridge 281 structures 250 waveform analysis, Galicia margin 95-7 Porcupine basin 33 West Galicia margin see Galicia margin Tertiary Igneous Province 275 West Lewis Basin 216 thanatocenoses, radiolarian 220-2 West Shetland basin 53 thermal age 272-3 West Shetland Shelf 160 161 thermal uplift, role in erosion of 264 West Shetland slope-apron titanaugite 189 lithology 171-2 Tor Formation 255, 256, 257 setting 160-2 Torfadalsvatn 239 time of formation 163-5 trace element analysis Westray Ridge 54 Faeroe Island Shelf dredge haul 183-4, 185, 189 Whipple Mountain detachment 103 trace fossils 16, 192 Whiterose Formation 6, 7 Triassic Wick fault 250, 254 Jeanne d'Arc basin 5, 7, 30 WyviUe-Thomson Ridge 147, 160, 161, 272, 289 tuff, basaltic formation 142, 155, 215, 216 Faeroe Island Shelf 182, 184-5, 189, 192-3 correlation with North Sea 193-4 tuffaceous limestone, Faeroe Island Shelf 182, 189-90 Ymir Ridge 142, 147, 215, 216 turbidites 78 Younger Dryas 228-9, 239, 240, 242 unconformities 182, 185, 192 defined 1