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Index Page numbers in italic denote figures. Page numbers in bold denote tables. 64 Degree West Fracture Zone 67 see also Central Atlantic Rift System; Equatorial Atlantic; NE Atlantic-Eurasia Basin; South Acarau sub-basin, half-graben 241 Atlantic Rift System Accommodation Block Ayerwaddy River delta deposits 43, 48, 58 Guyana-Suriname continental margin 147–148, Azores-Gibraltar Fracture Zone 82 149, 153 Azores-Gibraltar Transform 5 spreading 153–154, 165, 166, 168–169, 173 accretionary prism, Andaman Sea 41 Baffin Bay 65, 85, 86, 87, 348 Acoupa depression field 188, 189, 190, 192 Barents Sea 64, 66, 70, 74, 76 Aegir Ridge 72, 339, 340, 346–347, 352 Barents Shelf-NE Greenland separation 71, 72, Africa-Antarctica ocean 300, 306–308, 309–310 344–349 see also East African margin Barents-Kara Sea margin 68, 87 Aghulas Fault Zone 316, 317, 319, 320 Barreirinhas Basin Aghulas Fracture Zone 301, 317 anhydrite 237 Aghulas transform 5 flower structure 239, 243, 244 Alaska-Chukotka rotation 81 transpressional structures 237, 239–240, 241 Alcock Rise 39, 40, 41, 52, 55, 56 Barreirinhas Shelf 223, 225 Alpha Ridge 69, 75, 76, 78, 83, 348 Beattie magnetic anomaly 314, 317 Alpha-Mendeleev Ridge system 64, 65, 68, 69, Beira High 310 85, 86, 348, 352 Benue Fracture Zone 223 Amerasian Basin shear 75, 76, 89, 349 Bering Strait 64, 87 Amapa Platform 223 Big Lyakhovsky Island 75, 76 Amazon Fan 137, 141, 142, 181, 184, 214 Billefjorden Fault Zone 70, 71, 74, 345 Amerasia Basin 66, 68, 344, 345, 349 Bjørnøya Basin 65, 72, 74, 340, 346–347 transform 67, 69, 73, 75–77, 78 Boa Vista Graben 223, 224 Andaman Basin, spreading centre 40, 41, Bonacca Basin 282, 285 56–58 Boreas Basin 344 Andaman Islands, volcanic arc 53 Bouvet triple junction 308 Andaman ophiolites 53 Bragman’s Bluff Formation 277, 278 Andaman Sea Brazil Central Region 40,41 geophysical data 220, 223 crustal thickness 53–55 oils 226, 228, 230 deformation migration 56 Brazil-Guyana continent-ocean boundary, oils Eastern Region 40,43–52 223–224, 225, 229, 230 geological setting 40,41–43 Broken Ridge 96 Northern Region 40, 41, 43 Brookian Orogeny 81–82, 86 Palaeogene tectonics 52–53, 56, 57,58–59 Brooks Range 65, 79–80, 81, 83, 84, 86, 348 structural evolution 39–59 Western Region 40,41 Cacipore Graben 223 Andrew Bain Fracture Zone 306, 307, 315, 317 Caledonian Orogeny 65, 68, 70–71, 344 Angoche dykes 309–310 Cambay rifting 349 Anisin Basin 78 Canada Basin 64, 65, 66, 68–69, 76, 345, 348 Antarctica shear 73 Elan Bank microcontinent 113–116, 342–343 widening 81–82, 84, 349 India-Antarctica plate reconstruction models 113, windshield wiper model 69, 73, 345 116–117, 342–343 Cape Range Transform 5, 362 Antarctica-Africa ocean 300, 306–308, Cape Three Points Basin 230, 237, 239 309–310 carbonate platforms 6, 128, 131, 134, 136, 137, 285, 292 Apodi Graben 223, 224 Caribbean, geological setting 274–278 Arctic Large Igneous Province 69 Caribbean Arc see Great Arc of the Caribbean Arctic Ocean 63–90, 64 Caribbean Plate 273, 274 continent-ocean boundary 68, 78,81 motion 275–276 crustal types 64 tectonic evolution 280–293, 290, 291–292 opening, kinematic history 81–87, 89 Caribe Formation 276, 277 petroleum systems 63, 88–89, 90 Carlsberg Ridge 96, 351 shear margins 67–68, 70–81 Carnaubais Trend 223, 224 transform margins 66–90 Cassipore Basin 127, 131 Atlantic Ocean, spreading 81, 82,86 Castilla Formation 277, 278 378 INDEX Cauvery Rift Zone 11, 12, 15, 18, 19, 119 crustal thickness 361–362, 364 Elan Bank release 101–102, 103, 107, 111, 112–113, crustal wounds, Elan Bank release mechanism 97–98 334, 337–338, 339–341 Cayman Trough 273, 274 Danakil Block 324, 341, 344 crust 281, 282, 283 Davie Fracture Zone 301, 308, 310, 312, 314, 316–317 geological setting 276 see also Original Davie Fracture Zone plate kinematics 290, 291–292 De Geer Line 67, 68, 89, 344 spreading 276, 280, 293 evolution 70–73, 74,88 Ceara´ Basin 223, 225 De Long Islands 75, 76 oils 226–227, 228, 230 Dead Sea Transform 77, 80 Ceara´-Potiguar/Ghana-Dahomey margin Deccan Trap basalts 306, 319, 330, 332, 333–334, segment 221, 222 351–352 Central Atlantic Magmatic Province 146 deformation Central Atlantic Rift System 1, 3 Andaman Sea 56 Guyana-Suriname case study 146–173 Honduran Borderlands/Nicaraguan Rise 282, Jurassic-Present 3 283–284, 285, 287, 292–293 linkage with South Atlantic Rift System 170–172 strike-slip, Ghana Ridge 251 rifting 4, 146, 169, 202 see also transpression; transtension southern terminus 145–146, 169, 171–173 Demerara Plateau 127, 128–129, 131, 147, 180, 181 strike-slip faults 164–165 basement ridges 187, 188, 194 Tithonian 4 bathymetry 183, 184, 189 Triassic-Jurassic boundary 2 continent-ocean boundary 184–185, 186–187, 192, triple junction 146 194, 195 Central Chortis Terrane 275, 276 continental slopes 183–185 Chagos-Laccadive Ridge 330 contourites 190–191, 193, 194 channel-levee complexes 28 eastern segment interpretation 165–166 Charlie Gibbs Fracture Zone 5, 340 faults 187, 189 Chortis Block 273, 274 formation 180 crust 281, 292, 293 geological setting 148, 180–181 geological setting 274–275 gravimetric anomalies 149, 153, 183, 184, 186, 187 plate kinematics 290, 291–292 gravity slides 181, 184, 187–188, 191, 194, 195 transport 282 IGUANES data 181–183, 184 Chukchi Borderlands Transform 64, 66, 67, 69, 76, interpretation 183–195 78, 82, 84, 90, 348 late Albian unconformity 181, 183, 185, 186–187 Chukchi Plateau 78 mounds 189–190, 191 Chukchi Sea 64, 79, 81 NE segment interpretation 165 Chukotka block 71, 73, 75, 81, 83 passive-transform margin 180 Coco Marina Formation 276, 277 porewater geochemistry 192 Codo´ Formation 245, 246 post-Albian sedimentary basin 181, 182 Colon Mountains fold and thrust belt 275, 283 seafloor depressions 188–190, 194–195 Colville Trough 86 seismic data 154–155, 156–157, 158, 159, 182–184, Comorin Ridge 304, 306 185, 187 competing rift-zone model, Elan Bank release structure 180, 183–187 mechanism 97–98 western extensional margin 159 continent-ocean boundary break-up timing 160–161 Arctic Ocean 68, 78,81 seawards-dipping reflectors 154–155, 159 Brazil-Guyana 223 Demerara/Guinea margin segment 221, 222 French Guiana margin 139, 140 Denali Fault 78 Demerara Plateau 184–185, 186–187, 192, diamondoids 223, 227 194, 195 Diligent Fault 41 contourites, Demerara Plateau 190–191, 193, 194 Dirck Hartog Ridge 304, 306 convection, secondary 5 Dix Cove Ridge 222, 223, 230 Coromandal strike-slip fault zone 102, 105, 119, 338 Dronning Maud Land 307, 308 Coromandal Transform 5, 11–12, 20–23, 110, duplexes 12, 13 112, 341 strike-slip 327 crustal thickness variation 362 dykes Elan Bank fit 107, 108, 109, 111, 334 Central Atlantic triple junction 146 horse-tail structure 15, 18–19, 21–23, 341 Mwenzi triple junction 309 Coˆte d’Ivoire see Ivory Coast creep, lower crust 366, 367, 368 East African margin 300, 301, 317 Cretaceous ‘Quiet Zone’ 73, 300, 306, 314 seismic data 316–317 Crocker Land 71 East Andaman Basin 40, 42, 43, 46, 48–52, 58 crustal flow 8, 361–362 crustal types 50–52, 53, 54 see also lower crust, ductility depocentre 48, 49, 58 INDEX 379 faulting 48–50, 54–56, 57 evaporites seismic data 39, 46, 48, 49, 50–52, 55 Demerara Plateau 161 syn-rift history 48 Honduran continental margin 276 East Coast magnetic anomaly 2 Romanche Fracture Zone 237, 245 East Gondwana 311, 312, 313, 314, 315, 316, 317 exhumation, mantle East Greenland Ridge 71, 72, 324, 340, 346–347, 348 Elan Bank 105, 109–110, 112, 115–116 release, multiple tectonic events 344–349, 352 French Guiana margin 136, 139–141 East Indian continental margin 11–12, 101, 102 extension release of Elan Bank 95–119, 334, 337–338, Andaman Sea 56 339–341 depth-dependent 5 reconstruction 107–117, 111, 334, 342–343 eastern Demerara margin 165 East Jan Mayen Fracture Zone 67, 340 Elan Bank 112–116, 337, 339–341 East Siberian Basin 78 Laptev Rift 77 East Siberian Sea 64,75 NE Atlantic 345, 346–347 East Tasman Plateau 323 extensional bridges 12, 13 Eastern Chortis Terrane 275, 276 extensional margins 1, 5, 165 Eastern Ghat Mobile Belt 95 see also Krishna-Godavari Rift Zone Eastern Margin, Andaman Sea 41 extensional oversteps 12 Eastern pull-apart terrain, Romanche Transform 250, 263, 266 Falkland Islands 314, 315, 316 Elan Bank microcontinent 95–119, 96–97, 300 Falklands Transform 5,8 boreholes 98 fault zones, influence on transforms 8 continental origin 95 faults crustal architecture 100–102, 105, 109–110 Andaman Sea 41, 42,43 model 98 Demerara Plateau 187, 189 gravity anomalies 95, 97, 98, 99–100, 104, 107 East Andaman Basin 43, 48–50 India-Antarctica plate reconstruction models Elan Bank 102–105, 118–119, 337, 338 116–117, 342–343 Guyana transform margin 162, 163–165, 167–168 mantle exhumation 105 Honduran Borderlands 282, 283–285 reconstruction 99, 107–117, 111, 334, 342–343 Mergui Basin 44–46 release from East India 95–97, 323, 334, 337–338, Nicaraguan Rise 285–286 339–341 Romanche Fracture Zone 241–243 competing rift-zone model 97–98, 118, 350, 352 in transform margins 19, 24–25, 25, 26, distal margin 103–105 29–30 oceanic domain 105–107 Fernando do Noronha Fracture Zone 223 plume-refocusing model 97, 117–118, 352 Fifa Well 243, 246 proto-oceanic domain 105 flower structures proximal margin deformation 102–103, Arctic Ocean 81, 88 104, 108 Elan Bank 99, 102 rifting 100–102 Romanche Fracture Zone 237, 239, 242, seismic profiles 98, 99, 100, 103, 104, 106 243, 244 marriage technique 98–99, 110, 112 South Sagaing Fault 49, 51 structural architecture of margins 108–109 folding, Romanche Fracture Zone 237–239, 242, tectonic timing 99, 105, 112–113