Related by context. All words. (Click for frequent words.) 63 Gondwana supercontinent 59 Tectonic plates 55 landmasses 53 shifting tectonic plates 52 Mertz Glacier 52 oceanic trenches 52 Greenland icecap 52 Earth tectonic plates 51 crustal plates 51 Chicxulub crater 51 seismic faultlines 51 andesitic rocks 51 Orcus Patera 51 glaciers retreated 51 Eurasian tectonic plates 50 Nares Strait 50 Tharsis Rise 50 Gondwanaland 50 anticyclones 50 Eyjafjallajökull glacier 50 cratons 50 Antarctic glaciers 50 glacial meltwater 50 Rossby waves 50 Generally defrost 50 Laurasia 50 rifting 49 Jovian atmosphere 49 asthenosphere 49 ocean basins 49 Jellyfish swarm northward 49 intraplate 49 Drake Passage 49 ignimbrite 49 Sicily Mount Etna 49 calderas 49 backing Jundollah 49 Hyksos invaders 49 anticyclonic 49 lithosphere 49 polar icecap 49 Tropical Storm Neki 49 Chicxulub Crater 49 Syrtis Major 49 supercontinents 49 Puu Oo 49 hateful reinjecting tension 48 ethnic cleavages 48 unbridgeable divide 48 southern supercontinent 48 Shi'ite crescent 48 By UofA Media 48 oceanic plates 48 Tropical Storm Elida 48 deep convective clouds 48 downwelling 48 Cascadia fault 48 recent hickup 48 brittle deformation 48 Ice floes 48 Subduction zones 48 molten magma 48 warm interglacial periods 48 SpaceX splashed 48 multipolarity 48 steering currents 48 ancient hominid 48 equatorial Pacific Ocean 48 Warmer oceans 48 Antarctic Ice Shelf 48 Cumbre Vieja 48 amplification Zwally 48 Feng Zhongping 47 tectonic boundary 47 ancient supercontinent 47 Nubian kingdom 47 westerly trough 47 supercontinent Pangea 47 Subtropical Storm Otto 47 Eurasian landmass 47 Ares Vallis 47 karstic 47 glacier melts 47 west northwesterly 47 moon Mimas 47 Reuveny 47 polar vortex 47 volcanic magma 47 Sermilik Fjord 47 intercommunal 47 Brimstone Pit 47 grabens 47 IG FSV ;) COUNTRY 47 west northwestward 47 strongly altered mafic 47 La Niña pattern 47 Patagonian Andes 47 Tropical Storm Estelle 47 cyclonic circulations 47 Katharine Willett 47 Nazca plate 47 Tropical Storm Fausto 47 tropical cyclone Laurence 47 volcano lava dome 47 Hellas Planitia 47 El Nino warming 47 southern latitudes 47 Torrential monsoon rains 47 oceanic circulation 47 Agulhas Current 47 By Dan Nonte 47 colder denser 46 ash cloud hovering 46 Tharsis Montes 46 Kelvin Helmholtz 46 Fram Strait 46 Crozet Islands 46 mantle lithosphere 46 seismically active zones 46 supercontinent 46 Grimsvoetn volcano 46 inter civilizational 46 Furnes 46 tropical savannah 46 monsoonal trough 46 equatorial waters 46 tectonic plate movements 46 Methone 46 Madden Julian Oscillation 46 tropical glaciers 46 Dan Nonte University 46 gyres 46 permafrost degradation 46 subantarctic 46 towering icebergs 46 Bashi Channel 46 Palaeozoic sedimentary 46 geostrategy 46 disseminated pyrite mineralization 46 magma cools 46 anticyclone 46 pyroclastics 46 planetwide 46 Tropical Storm Alma 46 torturously slow pace 46 Seafaring pioneers 46 Neanderthals Homo neanderthalensis 46 Tropical Storm Odile 46 asperities 46 seismogenic 46 Cheng Xiaohe 46 geologic faults 46 colliding tectonic plates 46 Tropical Storm Karina 46 Jill Yesko University 46 Polar Vortex 46 melting glacial 46 Arsia Mons 46 west northwesterly direction 46 thrust faulting 46 supercontinent Pangaea 46 Tatar Strait 46 glaciers melted 46 Molten rock 46 midlatitudes 46 prevailing westerly winds 46 Ithaca Chasma 46 Tropical Storm Iselle 46 nuclearized 46 geodynamics 46 Ronne Ice Shelf 46 strained Sino US 46 Eyjafjoell volcano 46 Territorial disputes 46 Puerto Rico Hispaniola 46 rotate counter clockwise 46 crustal plate 46 USSR disintegration 46 galactic equator 46 Anatolian peninsula 45 icesheet 45 engorged rivers 45 tropical rainstorms 45 shelves fringing 45 Other PASSURs 45 oceanic crust 45 faultline 45 large oceanic plateaus 45 tawny hills 45 sulfidic 45 mainlands 45 Shia crescent 45 south Gorely 45 Pu'u O'o 45 Grimsvötn volcano 45 Siberian Traps 45 lava fountains 45 Whillans Ice Stream 45 Marquesas islands 45 Supercell thunderstorms 45 drifting icebergs 45 Plate tectonics 45 Ice Age glaciers 45 volcanic ridges 45 magnetic dynamo 45 permafrost thaws 45 galactic disk 45 craton 45 Antarctic continent 45 landing superheated gases 45 metasediment 45 lowermost mantle 45 Saturn moon Mimas 45 icebergs drifting 45 spinning clockwise 45 Semitic peoples 45 Yellowstone Caldera 45 katabatic winds 45 felsic tuff 45 glacial cycles 45 snowier winters 45 Tropical Storm Hilda 45 Cryogenian 45 faunas 45 sinistral 45 Veniaminof 45 Eyjafjallajokull Volcano 45 chronic noncommunicable diseases 45 seafloors 45 Kilauea eruption 45 equatorial Pacific 45 polygon shaped 45 crustal deformation 45 La Nina pattern 45 Amundsen Sea 45 erosional 45 periodic flare ups 45 Iceland Eyjafjallajökull 45 southeasterly direction 45 nuclearised 45 Gakkel Ridge 45 meteorite impacts 45 prairies deserts 45 claystone 45 Volcanic gases 45 Greater Antilles 45 Seneca Mohawk Tuscarora 45 gravitational interaction 45 continental rifting 45 Sun Shihai 45 underwater volcanos 45 droughts floods storms 45 triadic 45 twin Solar Terrestrial 45 rotate counterclockwise 45 By Kejal Vyas 45 tectonic plates slabs 45 glaciers receded 45 magma ocean 45 easterly swell 44 azure Persian Gulf 44 Southern Oscillation 44 flatfishes 44 unstable lava dome 44 poleward 44 Drygalski 44 volcanic craters 44 basalt lava 44 Cold War superpowers 44 coastal inundation 44 Grimsvötn 44 underwater lobes 44 Ayles Ice Shelf 44 glaciers recede 44 hyper saline 44 Last Glacial Maximum 44 subtropical ridge 44 El Nino Southern Oscillation 44 eastern equatorial Pacific 44 parabolic arcs 44 Tropical Storm Ivo 44 fissure eruption 44 Warmer seas 44 Andaman Islands quake 44 Volcano eruptions 44 northeastwards 44 Larsen Ice Shelf 44 Tropical Storm Odile hugged 44 foehn 44 Equatorial Pacific 44 geothermal gradient 44 Mathieu Amalric stumbles 44 Mud volcanoes 44 spin counterclockwise 44 Impoverished Tajikistan 44 Noctilucent clouds 44 Eruptive activity 44 moonquakes 44 microtones 44 Kathleen Maclay Media 44 Petermann Glacier 44 subpolar 44 deglaciation 44 heavily cratered 44 Tropical Storm Jimena 44 Locust swarms 44 Alpine glaciers 44 Birimian Greenstone Belt 44 glacier calving 44 Hellas Basin 44 GJ#b 44 Holocene epoch 44 Cyclone Wati 44 faint wisps 44 Pleistocene Ice Age 44 Mediterranean basin 44 Kermadec Arc 44 rotating counter clockwise 44 basaltic lava 44 planets Uranus 44 chlorite epidote 44 infalling gas 44 Deccan Traps 44 anthropogenically 44 hydrothermal fluid 44 dip shallowly 44 erupting lava 44 fissions 44 megadroughts 44 tectonic faults 44 hydrothermal fluids 44 pronounced zigzag pattern 44 undersea volcanoes 44 ejecta blanket 44 gyre 44 Board DEIK 44 umbral shadow 44 deepened rift 44 jovian 44 Klaza Zone 44 surface hoar 44 ancient lava flows 44 Tropical Depression Alpha 44 Eagle Nebula star 44 barren smoky wasteland 44 Shiite crescent 44 Lava flows 44 Eurasian continent 44 Longmen Shan fault 44 Drygalski ice tongue 44 Porcupine Destor fault 44 SW'ly 44 stormier debris 44 Harmful algal blooms 44 subsurface ocean 44 Grimsvotn signaling 44 main cryogenic compressors 44 Pavonis Mons 44 Laurentide ice sheet 44 Byzantine Greeks 44 mantle plumes 44 mineral olivine 44 fisheries wildlife refuges 44 tectonic activity 44 protoplanets 44 Strong northerly winds 44 spinning counterclockwise 44 plasmasphere 44 foliation 44 Tropical Storm Paloma 44 polarizes societies 44 sub glacial lakes 44 basaltic rocks 44 magma erupts 44 Tokelau bucolic collection 43 North Pacific Gyre 43 Partial solar eclipse 43 Julia Fiorino 43 tectonic movements 43 Tom Grafenauer meteorologist 43 Grímsvötn volcano 43 glaciations 43 Dotted lines 43 Tectonic Plate 43 Alfred Wegener 43 vast Gusev Crater 43 smoothest flattest 43 Cerberus Fossae 43 volcano magma 43 icefields 43 volcanic plumes 43 ridging 43 tectonic plate 43 Korean peninsular 43 archfoes 43 heatwaves floods droughts 43 Mount Kilimanjaro glaciers 43 Cayman Trough 43 intense hydrothermal alteration 43 volcano Katla 43 tanker Volganeft 43 microscopic radioactive particles 43 aseismic 43 el Nino 43 internecine wars 43 tectonically active 43 archfoe Israel 43 drifting southwards 43 Atlantic Multidecadal Oscillation AMO 43 Tidal waves 43 Fishing trawlers 43 supervolcanoes 43 Scientists theorized 43 Lysekil Sweden 43 Perito Moreno glacier 43 cyclonic circulation 43 Adonara 43 Mariana Arc 43 multi polarity 43 Yucatán Peninsula 43 Heatwave opens 43 Islamizing 43 Cape Adare 43 hydrosphere 43 Subtropical Storm Laura 43 foul smelling gases 43 deepwater corals 43 Mexico Yucatán Peninsula 43 Eocene epoch 43 bearing quartz carbonate 43 Weakened Ernesto 43 felsic dike 43 mass whale strandings 43 Semitic languages 43 galactic halo 43 tectonic plate boundary 43 Volcano spews 43 unassailably solid 43 conflictual relationship 43 Severe droughts 43 Kerguelen Plateau 43 troop buildups 43 acidic oceans 43 geyser plumes 43 NKorea seizes SKorean 43 UB# Xena 43 chicken pox Brumley 43 meteor impacts 43 Tropical Storm Flossie 43 supercontinent Gondwana 43 geoeconomic 43 mutual incomprehension 43 Tasman Sea 43 pyrite veins 43 melted glacial 43 rainbands 43 Iberian Peninsula 43 evaporite deposits 43 Andres weakens 43 Siberia Mongolia 43 Volcanic ash drifting 43 mystery Skorik 43 airmass 43 continental crust 43 compressional 43 layered sedimentary rock 43 abyssal plains 43 north northeastwards 43 Sunda Trench 43 Kilimanjaro glaciers 43 monsoonal moisture 43 tropical storm Henriette 43 frozen wastelands 43 Jovian moons 43 gravitational tugs 43 uneasiest 43 anticlines 43 lava flowing 43 volcanic caldera 43 narrow ravines 43 Mayor Ariel Magcalas 43 ferric oxides 43 Tunguska meteorite 43 sunward 43 icecaps 43 Occupied Palestinian territories 43 Tropical depressions 43 ethnonationalism 43 rotating counterclockwise 43 simmering cauldron 43 Bluefin tuna stocks 43 amphibolite facies 43 Omni Severin Indianapolis 43 Workers Struggles 43 Furmanite operates 43 whitecapped 43 Vertical wind shear 43 lensing galaxy 43 Wilkins Ice Shelf 43 less populated Manu'a 43 Lake Yoa 43 Northerly winds 43 volanic 43 asteroid impacts 43 talc chlorite 43 Balkan peninsula 43 shadowed craters 43 subtropical oceans 43 Coral bleaching 43 Guatemala Belize 43 flood basalts 43 glaciers calving 43 prolonged Arafat incapacitation 43 Kamoamoa eruption 43 Perito Moreno 43 ash cloud drifted 43 TODAY Showers 43 Floods ravage Pakistan 43 eastwards 43 icebergs 43 chemical metasedimentary rocks 43 overlying sediments 43 kept mountainous snowbanks 43 permafrost melts 43 subtropical depression 43 arid Sahel belt 43 Landslips 43 Azores archipelago 43 oozes lava 43 Oceanus Procellarum 43 Volcanic eruptions 43 Himalayan river basins 43 thunderstorms loomed 43 icefield 43 unstable airmass 43 dacite porphyry 43 Krakatoa volcano 43 subducting 43 Islamized 43 subglacial lakes 42 compass needle 42 pantheism 42 magnetotail 42 tectonically 42 S'ly 42 tropopause 42 braincase 42 teleconnections 42 volcanoes erupt 42 incandescent lava 42 Mount Bosavi 42 political chasms separating 42 dust mote 42 La Nina phenomenon 42 concentric ripples 42 southerly latitudes 42 shallowing 42 Katla volcano 42 Iceland Eyjafjoell volcano 42 polar caps 42 pyroclastic flow 42 Bering Straight 42 Parvaz detention 42 Tropical Storm Olaf 42 biogeographical 42 Indonesia Merapi volcano 42 lunar crust 42 overlying layers 42 triggering tidal waves 42 lava domes 42 oceanic lithosphere 42 temperate latitudes 42 outlet glaciers 42 conflictual 42 erupt explosively 42 severe droughts 42 fumarole 42 hyperinflationary depression 42 Atlantic Ocean 42 atmospheric convection 42 basaltic rock 42 ferocious counterattack 42 Antarctic icesheet 42 Sidi Salim 42 Tijuana cartels 42 northeasterly trending 42 abyssal plain 42 substorm 42 British dreadnought Hood 42 fratricidal wars 42 GoSolarUSA identifies 42 DLKGF 42 Kilauea Volcano east 42 anticlockwise 42 leaping Aqib Talib 42 sedimentary layers 42 monsoon trough 42 northeasterlies 42 spew lava 42 Greenland glacier 42 Hairline cracks 42 NNW trending 42 lava spewing 42 Pabuk bolstered monsoon rains 42 Tropical Storm Georgette 42 CHILDREN 'S STORYTIME 42 coastward 42 Kushites 42 thermohaline circulation 42 granitoid rocks 42 tectonic plates 42 retrograde orbit 42 thawing tundra 42 tsumanis 42 Tumen river 42 Tropical Storm Igor 42 Gilf Kebir 42 colder drier 42 Ida churned 42 Tropical Depression Ida 42 Halemaumau crater 42 Marysvale District 42 Oliva Hemker 42 peridotites 42 Dardanelles Strait 42 circumstellar 42 lithological contacts 42 conical dome 42 clashing civilizations 42 isobars 42 discontinuity 42 dispatching Sergey Ryabkov 42 ultramafic sill 42 Taklamakan Desert 42 resist tidal surges 42 southwesterlies 42 clathrates 42 magma mixing 42 tribal resentments 42 near Baengnyeong Island 42 Algal blooms 42 Arabian deserts 42 granitoids 42 planets orbits 42 gypsum crystals 42 subduction fault 42 threatens lairs 42 Pacific Subtropical Gyre 42 limestone bedrock 42 subtropical regions 42 Indian Ocean Dipole 42 abysses 42 volcano Mount Vesuvius 42 W'ly 42 CELTIC CROWN PUBLIC HOUSE 42 Copperstone Fault 42 might withered Yeltsin 42 Westerly winds 42 Eurasianism 42 anthropogenic aerosols 42 waterlogged dikes 42 fissures 42 Sunda Strait 42 Earth rotational axis 42 lunar magma 42 Wrote Salon.com 42 Tropical Storm Ignacio 42 polarisations 42 Israel Galilee panhandle 42 colonial empires 42 Arabian peninsular 42 extratropical cyclone 42 Sunda trench 42 Tropical Cyclone Laurence 42 auroral activity 42 became caricature ebony 42 mountain lava dome 42 Eyjafjallajökull erupted 42 MJO wave 42 deepening quagmire 42 dioritic 42 Hurricane Hernan 42 typhoon Bilis 42 chromatic passages 42 constant menacing growl 42 Enriquillo Plantain Garden 42 Typhoon Mirinae weakened 42 siliceous sediments 42 IG BNK ;) COUNTRY 42 Islamicate 42 cliff towered 42 poleward shift 42 floods heatwaves droughts 42 Leeward islands 42 gustnado 42 midlatitude 42 northwesterlies 42 auroral displays 42 ductile deformation 42 perma frost 42 deltaic plain 42 mysterious uncharted 42 Great Barrier reef 42 Tropical Storm Enrique 42 gravitational pulls 42 Protectionist pressures 42 Shallow earthquakes 42 downbursts 42 Tsushima Strait 42 TONIGHT Showers 42 Subtropical depression 42 northeasterly direction 42 Philippines Mayon volcano 42 Heavier rains 42 Ontario Lacus 42 evaluate EM conductors 42 Martian craters 42 Ross Ice Shelf 42 mammalian lineage 42 Niobrara Shale formation 42 Tracy Arm fjord 42 swirling eddies 42 dolerite 42 permafrost melt 42 CHRONOLOGY Major 42 Carteret Islands 42 totalitarianisms 42 Ares IX booster 42 explosive volcanism 42 N'ly wind 42 galactic alignment 42 diffuse aurora 42 Nisqually Glacier 42 civilizational links 42 receding glaciers 42 basalt volcanic 42 Mount Mazama 42 IG HCR ;) COUNTRY 42 polar icecaps 42 Kaminski Morrow 42 hammering monsoon rains 42 Karimov regime 42 Antarctic glacier 42 Caucusus 42 Petermann glacier 42 tidally 42 Le Quéré 42 barren expanses 42 epidote alteration 42 Southeasterly winds 42 interglacial period 42 isostatic rebound 42 IG ENE ;) COUNTRY 42 Cyclone Wilma 42 mafic intrusion 42 blue supergiant 42 Yucatán peninsula 42 eddies 42 massive sulphide horizon 42 Louisiana coastal marshes 42 Chandeleur Sound 42 Warsaw Pact allies 42 Wayward whales 42 Himalayan kingdoms 42 Napau Crater 42 Scattered clouds 42 Neanderthal extinction 42 Tropical Storm Julio 42 epidural hematoma bleeding 42 outer corona 41 Dr Trewin 41 drenching Belize 41 pyrite halo 41 glacier shrinkage 41 structurally deformed 41 deepest darkest abyss 41 quartz sericite pyrite alteration 41 Bulusan volcano 41 fesh fesh 41 rhyolitic 41 APGROUP NorthAmerica ;) COUNTRY 41 Enormous chasms 41 Widely scattered showers 41 disaffected southerners 41 Tuamotu Archipelago 41 Robert Sarmast 41 Iapetus 41 Repair Remote Monitoring 41 indigenous cultures 41 rupture 41 seafloor methane 41 #-# EQUITIES INDEX PTY 41 headliners Shakira 41 arterial hypotension 41 flash floods landslides 41 elastic deformation 41 littoral drift 41 fast Yazel 41 Charcot Island 41 tribal animosities 41 latent anti Semitism 41 Southasia 41 moulins 41 ideological rifts 41 Puerto Rico Trench 41 consensual flirtatious 41 imperial hegemony 41 moonlets 41 floods droughts heatwaves 41 fault ruptures 41 Tropical Storm Gert 41 galut 41 Shallower quakes tend 41 Jeremy Tabin 41 MONEY OPTION 41 breccia zones 41 warmer wetter winters 41 microstates 41 mare nostrum 41 Cretaceous sediments 41 rubbly 41 ENE trending 41 argillic altered 41 arid climes 41 Endeavour Crater 41 cryovolcanism 41 de hyphenation 41 abyssal depths 41 Indo Aryans 41 sediments deposited 41 massifs 41 Israeli overflights 41 coastlands 41 snowmelt lessened 41 superheavy elements 41 resurgent nationalism 41 Elburz 41 Stillwater Intrusive Complex 41 FALCON Water 41 cometary impacts 41 hypoxic zone 41 hydrological drought 41 eastern seaboards 41 Atlantic Gyre 41 unbridgeable chasm 41 equatorial latitudes 41 silicified limestone 41 Pacific Gyre 41 biotite schist 41 Ambassador Uichiro Niwa 41 By ROBIN STEIN 41 Casa Berardi Fault 41 Copter crashes 41 strait separating 41 fathomless depths 41 Fernández Armesto 41 silicic alteration 41 north westerlies 41 Cretaceous sandstones 41 System #L 41 nicknamed Bonneville 41 altered felsic volcanic rocks 41 Telecom pivotals 41 planet Nibiru 41 dipping quartz veins 41 Yaxtché deposit 41 lithospheric 41 Shandong Peninsula 41 Yellowstone caldera 41 hydrothermal breccia 41 virulent anti Americanism 41 fissure 41 amphibolite 41 Bilateral ties 41 Tropical Storm Conson 41 Seepage detected 41 fault splays 41 stratigraphic sequence 41 sulfate minerals 41 Zagros Mountains 41 infinite expanse 41 Ozone depletion 41 Fiberglas fabric roof 41 hilly mountainous terrain 41 airglow 41 legal ramifications Urbahn 41 Jurassic sandstone 41 EL Nino 41 Mediteranean 41 oxidized sulphides 41 kindred peoples 41 muddy sandy 41 recoupling 41 volcanic arcs 41 circumpolar 41 pitchblende mineralization 41 Indo Sino 41 Herschel Crater 41 Frictions 41 mineralized felsic volcanic 41 greenschist 41 sub tropic 41 ADPKD patients 41 lungs liver spleen 41 ash plumes 41 Casas Geo subdivision 41 Triassic Period 41 warmer wetter 41 Kunashir Island 41 Disenchantment Bay 41 Martian volcanoes 41 Terneras vein 41 proverbial slippery slope 41 interglacial periods 41 moonlike landscape 41 Klaus Schmidt Hebbel 41 amphibolite grade 41 Pacoima Canyon 41 Kavir desert 41 Norbert weakens 41 blurs boundaries 41 expect Hermine remnants 41 Martian crust 41 sedimentary formations 41 Choppy waters 41 active volcano Grimsvotn 41 icebergs calving 41 internecine conflicts 41 Dental fluorosis 41 clot thrombus 41 Burson Marsteller www.burson marsteller.com 41 magnetic lineament 41 galactic clusters 41 pluralist societies 41 topological defects 41 bureaucratic collectivism 41 Laramidia 41 Endurance Crater 41 disseminated arsenopyrite 41 Southwest #/#kt 41 issuers domiciled 41 conflicting ideologies 41 turbulent eddies 41 Amery Ice Shelf 41 Eyjafjallajökull eruption 41 Arctic airmass 41 tremblings 41 Maya lowlands 41 al Aqsa intifada 41 Philippe Djangone Bi 41 streaky sheens 41 volcanic dust 41 runaway greenhouse 41 TRANG HO INVESTOR 'S 41 drifting 41 southerly swell 41 upwellings 41 Pacific gyre 41 Ferrous scrap prices 41 Himalaya glaciers 41 eye poppingly vivid 41 Hurricane Ivo 41 acre bluff overlooking 41 interpenetrate 41 Tyrrhenian 41 IG TEC ;) COUNTRY 41 pluralistic democracies 41 ancient Mayan civilization 41 harmonic tremors 41 olivine rich 41 Ice Ages 41 Mahgreb 41 Stranded whales 41 northward 41 Earth crust 41 runaway thermonuclear 41 magnetopause 41 reconciliatory gestures 41 Falklands Malvinas 41 barnacle goose 41 Caloris Basin 41 diatremes 41 APGROUP LatinAmerica ;) COUNTRY 41 hegemonic aspirations 41 Michel Berthelot CA 41 Cape Alava 41 southwesterly direction 41 Spontaneous demonstrations 41 azure ocean 41 steppe mammoth 41 Pigeon guano 41 Burma microplate 41 Sino DPRK 41 tropical storm Ophelia 41 Gas hydrates 41 cultural affinities 41 galactic cores 41 oceanic islands 41 unipolarity