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(Click for frequent words.) 72 oceanic crust 72 lithosphere 72 crustal 68 craton 68 asthenosphere 68 cratons 67 Earth crust 66 earth crust 66 lavas 66 igneous rocks 65 basaltic rocks 65 mantle plumes 65 lithospheric 65 subducting 65 subduction 65 volcanism 64 subduction zone 64 subducted 64 magmatism 64 sedimentary rock 64 peridotite 64 sedimentary deposits 64 oceanic lithosphere 64 metamorphic rocks 63 Archaean 63 oceanic plates 63 magmas 63 basalts 63 plate tectonics 63 sedimentary layers 62 carbonate minerals 62 tectonic boundary 62 silicate minerals 62 olivine 62 subduction zones 62 Cryogenian 62 granitoids 61 glaciation 61 tectonically 61 turbidites 61 post perovskite 61 magma ocean 61 basaltic 61 stromatolites 61 chondrules 61 grabens 61 igneous rock 60 phyllosilicates 60 ophiolite 60 zircons 60 metamorphic rock 60 stromatolite 60 peridotites 60 rifting 60 tectonic plate movements 60 crustal rocks 60 supercontinent 60 magmatic 59 tectonic plate 59 Gondwanaland 59 anorthosite 59 Neoproterozoic 59 subducting plate 59 igneous 59 stratigraphic sequence 59 lowermost mantle 59 Palaeozoic 59 Precambrian 59 KT boundary 59 crustal plates 59 sediments deposited 59 mantle convection 59 ancient supercontinent 59 sedimentary rocks 59 planetesimals 59 silicate rocks 59 icesheet 59 tectonic 58 silicic 58 sediments 58 interglacial periods 58 Laurentide ice sheet 58 seismogenic 58 sedimentary 58 carbonate rocks 58 ocean ridges 58 lunar crust 58 GJ#b 58 Neogene 58 depositional 58 gabbros 58 ejecta blanket 58 hematite mineral 58 terranes 58 anticlines 58 calderas 58 tectonically active 58 landmasses 58 subhorizontal 58 thrust faulting 58 flood basalts 58 planetesimal 58 Nankai Trough 58 graben 58 polar vortex 58 chondrites 58 basalt 57 xenoliths 57 sedimentary sequences 57 tonalite 57 tuffaceous rocks 57 olivine rich 57 solar nebula 57 magma chambers 57 CAIs 57 Ordovician 57 plagioclase 57 molten magma 57 sedimentary basin 57 glaciations 57 tectonic movements 57 tectonic plate boundary 57 goethite 57 volcanic basalt 57 marine sediments 57 lateritic 57 Tibetan Plateau 57 tectonics 57 sedimentary sequence 57 kimberlite breccia 57 glaciers retreated 57 Eocene 57 andesitic rocks 57 sulphidic 57 Nazca plate 56 Alpine Fault 56 pyrite halo 56 supercontinents 56 geologically active 56 Cambrian Ordovician 56 carbonate sediments 56 crustal plate 56 intraplate 56 Antarctic Ice 56 magma 56 terrane 56 Fram Strait 56 overlying sediments 56 Laurasia 56 Lake Vostok 56 Valles Marineris 56 tectonic plate slides 56 Sunda trench 56 subglacial lake 56 hydrothermally 56 magma chamber 56 megathrust earthquake 56 geologically 56 basaltic magma 56 interglacial period 56 carbonate 56 mineralizing system 56 ultramafic intrusives 56 downwelling 56 tectonic plate boundaries 56 hydrothermal activity 56 deep convective clouds 56 basalt volcanic 56 orogenic 56 gneisses 56 silicate dust 56 galactic disk 56 isotopic compositions 56 seafloor sediments 55 sulphide deposits 55 mineralized intrusive 55 ejecta 55 gabbroic 55 REE enriched 55 coarser grained 55 Precambrian rocks 55 Permian Period 55 foraminifera 55 granitic rocks 55 hydrothermally altered 55 Palaeozoic sedimentary 55 Mesozoic 55 granitic intrusive 55 sulfur isotope 55 pyroclastics 55 olivines 55 advanced argillic alteration 55 calcite 55 undersea volcanoes 55 gravity anomaly 55 hydrothermal fluid 55 iridium layer 55 Amundsen Sea 55 serpentinized 55 quartz adularia 55 hydrated minerals 55 Late Jurassic 55 silicates 55 basaltic rock 55 claystone 55 stony meteorites 55 komatiitic 55 geologic 55 Siberian Traps 55 Meridiani 55 porphyry mineralization 55 geothermal gradient 55 Late Cretaceous 55 phyllosilicate 55 aragonite 55 Last Glacial Maximum 55 landforms 55 Tharsis 55 speleothems 55 komatiites 55 Laurentide Ice Sheet 55 amphibolite grade 55 volcanic stratigraphy 55 protoplanetary disk 54 carbonaceous chondrite 54 greenstones 54 anticyclonic 54 ultramafic rocks 54 polar icecap 54 Paleozoic sedimentary 54 Amundsen Sea Embayment 54 igneous intrusion 54 caldera 54 proto planetary disk 54 Toba eruption 54 lunar meteorites 54 silicate mantle 54 volcanic rocks 54 subglacial lakes 54 Carboniferous 54 pyroxenite 54 Syrtis Major 54 spherules 54 layered sedimentary rock 54 exosphere 54 abyssal plain 54 glaciers melted 54 oxygen isotope 54 Late Triassic 54 deformation 54 tectonic stresses 54 Siple Dome 54 Tertiary Period 54 isostatic rebound 54 gravity anomalies 54 martian meteorites 54 gabbroic rocks 54 Upper Triassic 54 volcanic tuff 54 explosive volcanism 54 Early Cretaceous 54 Elysium Planitia 54 paleomagnetic 54 syncline 54 Geologically 54 Antarctic ice 54 Transantarctic Mountains 54 glacial moraine 54 southern supercontinent 54 Bedout 54 eudialyte 54 specular hematite 54 Martian crust 54 tropopause 54 granitoid 54 Cascadia subduction zone 54 sulfidic 54 compressional 54 limestones 54 siliceous 54 supercontinent Pangaea 54 volcanically active 54 altered porphyry 54 coccolithophores 54 halite 54 dolomites 54 haematite 54 methane hydrate 54 jarosite 54 supergene enrichment 54 Arabia Terra 54 calcareous 54 Paleozoic 54 Late Paleozoic 54 volcanic sediments 54 Yellowstone caldera 54 sulfide deposits 54 crust 54 mineral olivine 54 volcanic magma 54 gneissic 54 carbonaceous 54 megathrust quake 54 diabase 54 isotope ratios 54 oceanic trenches 54 carbonate globules 54 tectonic activity 54 Navajo sandstone 54 meteorite bombardment 54 Quaternary Period 54 collisional 54 isotopic composition 54 midlatitudes 54 overlying layers 54 heavily cratered 54 thermally mature 54 granitic intrusion 54 glacial till 54 smectite 54 quartz feldspar porphyry intrusive 54 Copperstone Fault 54 clasts 54 hydrothermal alteration 53 seabed sediments 53 metasediment 53 Paleozoic sediments 53 Jurassic sandstone 53 Oort cloud 53 serpentinite 53 diatremes 53 andesite 53 Kuiper belt 53 hydrothermal 53 brittle deformation 53 glacial meltwater 53 saprolitic 53 basalt lava 53 epithermal deposit 53 mid latitudes 53 phyllic alteration 53 felsic tuff 53 Banded Iron Formation 53 meltwater 53 granite gneiss 53 amphibolite 53 lava tubes 53 Proterozoic 53 sub glacial lakes 53 stony meteorite 53 outwash 53 meteor impacts 53 iron carbonate 53 silicate 53 ocean basins 53 antineutrinos 53 intrusive rocks 53 granitic rock 53 bedrock outcrops 53 volcanics 53 Proterozoic rocks 53 volcanoclastic 53 komatiite 53 plutons 53 kaolinite 53 Cretaceous 53 icy moons 53 sedimentary basins 53 megathrust 53 subcrop 53 chemosynthetic 53 sericitization 53 Eurasian Plate 53 Tectonic plates 53 permafrost 53 chromosphere 53 Isua 53 granitic 53 anomalously 53 regolith 53 Paleoproterozoic 53 stratigraphically 53 Paleozoic carbonate 53 Late Ordovician 53 ignimbrite 53 peridotitic 53 isotope composition 53 gabbro 53 tectonic plate dives 53 stratovolcano 53 Lower Jurassic 53 accretionary 53 manganese mineralization 53 mantle lithosphere 53 Patagonian Andes 53 Laramidia 53 glacial ice 53 Alaskite 53 matter antimatter asymmetry 53 ductile deformation 53 zircon crystals 53 Fe Mn 53 ultramafic sequence 53 Geologically speaking 53 El Niños 53 Wollaston Domain 53 hydrothermal fluids 53 carbonatites 53 cryovolcanism 53 layered ultramafic 53 hornblende 53 yedoma 53 thermal gradient 53 loess 53 limonitic 53 pyroxene 53 temperature gradient 53 ferric oxides 53 mud volcanoes 53 H. erectus 53 amphibolite facies 53 glaciers receded 53 earths crust 53 microcracks 53 volcanogenic 53 glaciers 53 volcano sedimentary sequences 53 protoplanets 53 arcuate 53 fossils 53 sulphide bearing 53 mafic intrusive 53 temperate forests 53 basaltic lava 52 supergene mineralization 52 metavolcanics 52 chondritic meteorites 52 Cretaceous sandstones 52 hydrosphere 52 volcaniclastics 52 siliciclastic 52 mafic rocks 52 carbonatite complex 52 stratigraphy 52 erosional 52 tuffaceous sediments 52 clay alteration 52 calcite crystals 52 sulfide minerals 52 mudstone 52 biotite rich 52 large oceanic plateaus 52 concretions 52 mineral hematite 52 hydrothermal venting 52 colluvial 52 graphite whiskers 52 graphitic 52 mineralized breccias 52 argillic altered 52 metamorphism 52 lithologies 52 wrinkle ridges 52 tectonic uplift 52 massifs 52 calcrete 52 lunar highlands 52 convection currents 52 continental drift 52 rocky planets 52 photosphere 52 faunas 52 metasomatic 52 katabatic winds 52 WASP #b 52 McMurdo Dry Valleys 52 morphological evolution 52 planet Gliese #c 52 hydrated silica 52 vuggy silica 52 Outcrops 52 geoneutrinos 52 dunite 52 sunlike stars 52 intensely silicified 52 basalt flows 52 pyrrhotite mineralization 52 colliding tectonic plates 52 Earth tectonic plates 52 olivine crystals 52 circumstellar 52 Cascadia fault 52 forams 52 crackle breccia 52 Tharsis Rise 52 disseminated sulfides 52 shallowly dipping 52 limestone xenoliths 52 Palaeocene Eocene Thermal Maximum 52 depositional environment 52 mafic ultramafic 52 iceberg calving 52 meridional overturning circulation 52 dolerite 52 Deccan Traps 52 Archean 52 Hellas Basin 52 amphibolites 52 megathrust earthquakes 52 ilmenites 52 Sinus Meridiani 52 hydrological cycle 52 paleo placer 52 magnetospheric 52 gneiss 52 altered volcanics 52 Molybdenite 52 anomalous geochemistry 52 austenite 52 Cenozoic Era 52 strange quark 52 geochemical signature 52 massive sulfide mineralization 52 sulfate minerals 52 mineralized mafic 52 subglacial 52 volcanic arcs 52 mineralized breccia 52 meteorite fragments 52 moonlet 52 Sunda Trench 52 pillow lava 52 TrES 4 52 Gondwana supercontinent 52 Antarctic glaciers 52 sandstone intervals 52 surface hoar 52 crystal lattices 52 granites 52 glacial cycles 52 atmospheric CO 52 Ice Age glaciers 52 eclogite 52 tectonic faults 52 Late Devonian 52 hornfelsed 52 manto mineralization 52 moon Mimas 52 molten rock 52 epithermal mineralization 52 teleconnections 52 protoplanet 52 heliosheath 52 volcanic rock 52 isotope fractionation 52 sericite altered 52 hydrothermal vents 52 subsurface ocean 52 iron oxides 52 magnetite skarn 52 biotite alteration 52 EW trending 52 iron sulphides 52 carbonatite 52 wallrock 52 subducted beneath 52 Alum Shale 52 Larsen Ice Shelf 52 BIFs 52 stalagmite 52 perovskite 52 Ontario Lacus 52 supervolcanoes 52 quartz feldspar porphyries 52 subduction zone earthquakes 52 sulfide mineralization 52 globulars 52 alkalic 52 felsic intrusions 52 leached capping 52 icecap 52 Subduction Zone 52 intrusives 52 active volcanism 52 schists 52 silicified andesite 52 landmass 52 breccia zone 52 terrestrial planets 52 volcanic lava 52 overlying sandstone 52 airglow 52 Greenland Ice 52 weakly interacting 52 paragneiss 52 rhyolites 51 atmospheric methane 51 northerly trending 51 volcano sedimentary sequence 51 anticyclones 51 dilatant 51 IOCG deposits 51 carboniferous 51 Chicxulub crater 51 hornfels 51 sulphides 51 diorites 51 Paleozoic sedimentary rocks 51 Paleozoic Era 51 osmium 51 Paleozoic rocks 51 calcic 51 clathrates 51 volcanic breccias 51 clastic sediments 51 deglaciation 51 felsic dykes 51 massive sulfide 51 granitic basement 51 Oort Cloud 51 Snake River Plain 51 mid Pliocene 51 skarn mineralization 51 sedimentary formations 51 unconsolidated sediments 51 Eemian 51 cryosphere 51 Pleistocene Ice Age 51 Moho 51 altered andesitic 51 Iapetus 51 seafloor sediment 51 polar latitudes 51 porous sandstone 51 Greenland icesheet 51 martian atmosphere 51 Agulhas Current 51 quartz carbonate veins 51 Antarctic Dry Valleys 51 giant elliptical galaxies 51 Martian volcanoes 51 equatorial 51 magnetosphere 51 porphyry intrusions 51 Martian meteorites 51 andesitic volcanic rocks 51 impactors 51 supervolcano 51 rhyolite tuff 51 hydrothermal breccia 51 Lower Cretaceous 51 IP geophysical anomaly 51 chalcopyrite mineralization 51 Equatorial Pacific 51 detrital 51 ALH# 51 meta sedimentary rocks 51 granodiorite porphyry 51 evaporite 51 supergene copper 51 copper oxides 51 eastern equatorial Pacific 51 circumstellar disk 51 interglacial 51 sulfur isotopes 51 superheavy elements 51 exhalite 51 volcanoclastic rocks 51 hematite 51 Money Knob 51 epidote alteration 51 felsic dike 51 supergene 51 pyrite alteration 51 gabbro dykes 51 ornithischians 51 mya 51 Chalcopyrite 51 mafic intrusives 51 comet nuclei 51 weakly mineralized 51 potassically altered 51 Au Cu mineralization 51 merging galaxies 51 syenite porphyry 51 latite 51 graphitic conductors 51 gold mineralizing 51 REE bearing 51 dacite 51 hydrocarbon accumulations 51 Cascadia Subduction Zone 51 acid leached 51 Earths crust 51 disseminated pyrite mineralization 51 SST anomalies 51 Permo Triassic 51 microbialites 51 sedimentary strata 51 gas hydrates 51 greenstone belts 51 Subduction zones 51 amorphous calcium carbonate 51 NNE SSW 51 geophysically 51 ostracods 51 lava flowed 51 metasedimentary 51 karst topography 51 Panderichthys 51 hydroxyl molecules 51 Eagle Nest deposit 51 northeasterly trending 51 quartz carbonate veining 51 cobalt atoms 51 meta sediments 51 layered bedrock 51 crystalline silicates 51 paleochannel 51 gravitational attraction 51 nanobelts 51 Lengai 51 Turonian 51 tectonic plates collide 51 lava flows 51 felsic intrusive 51 mineralized boulders 51 Murchison meteorite 51 sulfate salts 51 Cenozoic 51 Kermadec Arc 51 Sulphide mineralization 51 GJ #b [001] 51 tungsten mineralization 51 biosignatures 51 Pre Cambrian 51 apatite 51 Gneiss 51 quartz sericite alteration 51 Athabasca sandstone 51 quartz grains 51 crestal 51 layered mafic 51 Mud volcanoes 51 Middle Devonian 51 greywackes 51 mafic intrusion 51 Paleogene 51 mafic flows 51 crustal movements 51 overthrust 51 Tertiary volcanic 51 Quaternary 51 mineralized quartz vein 51 interstellar dust grains 51 Antarctic Peninsula 51 aseismic 51 tectonic plates 51 asteroidal 51 ancient lava flows 51 deformational 51 porphyries 51 silica carbonate 51 midlatitude 51 manganese oxides 51 oceanic circulation 51 ultramafic intrusions 51 stalactite 51 soliton 51 quartz vein stockwork 51 rhyolite 51 sericitized 51 inner moons 51 tropical troposphere 51 compressive stress 51 abundant quartz veining 51 chlorite altered 51 Greenland icecap 51 megadroughts 51 massive sulphide mineralization 51 mylonite 51 vuggy 51 crustal thickness 51 Wilkins Ice Shelf 51 basalt rock 51 clastic 51 variably silicified 51 metal zonation 51 silicified limestone 51 bonebed 51 anisotropy 51 Cretaceous sediments 51 surficial 51 limestone bedrock 51 microearthquakes 51 propylitic 51 alteration halo 51 Fomalhaut b 51 silica alteration 51 stockwork veining 51 Cretaceous Tertiary 51 IP chargeability 50 Mesoproterozoic 50 chromitite 50 meridional flow 50 itabirite 50 equatorial Pacific Ocean 50 fluorapatite 50 pyrite arsenopyrite 50 hydrogen isotopes 50 seismic anisotropy 50 Proterozoic aged 50 rhyodacite 50 carbonaceous chondrites 50 oxygen isotopes 50 Peridotite 50 sulfur atoms 50 brachiopods 50 Neutron stars 50 Plio Pleistocene 50 terrestrial ecosystems 50 structural lineaments 50 orogenic gold deposits 50 recrystallized 50 granodiorite intrusive 50 X ray emission 50 Cretaceous periods 50 Jurassic Period 50 Jurassic limestone 50 Sedimentary rocks 50 Nazca Plate 50 continental rifting 50 quasicrystal 50 ultramafics 50 Eurasian tectonic plates 50 alteration haloes 50 GPa 50 facies 50 porphyry dykes 50 mineralized lenses 50 permanently shadowed craters 50 gold anomalism 50 karsts 50 ramidus 50 Arches Cluster 50 volcanic 50 stibnite 50 stockwork mineralization 50 Ohmoto 50 dromaeosaurs 50 volcanic ridges 50 rhyolite tuffs 50 Sturtian 50 pyroxenites 50 Kuiper belt objects 50 dextral 50 breccia pipes 50 magmatic rocks 50 poleward 50 meteoritic material 50 pegmatitic 50 quartz monzonite 50 hydrothermal vent 50 moonlets 50 breccia zones 50 Gakkel Ridge 50 Messinian 50 felsic dikes 50 yardangs 50 GJ #b [002] 50 felsic rocks 50 Nares Strait 50 fine grained sediment 50 pillow basalts 50 magnetar 50 unweathered 50 altered diorite 50 temperate regions 50 quartz carbonate vein 50 ignimbrites 50 elemental abundances 50 magnetotail 50 outer crust 50 extensional 50 disseminated sulphide mineralization 50 vuggy silica alteration 50 primitive meteorites 50 diorite intrusive 50 eclogitic 50 magnetic polarity 50 warmings 50 potassic altered 50 Io volcanoes 50 Ross Ice Shelf 50 alluvial gravel 50 colluvium 50 vanadium mineralization 50 microfossils 50 boron nitride 50 Ediacaran Period 50 sedimentary layer 50 phreatic 50 biotite 50 alluvial sediments 50 Wdowinski 50 ankerite 50 andesitic volcanic 50 ridging 50 Rossby waves 50 stratiform 50 Methane hydrate 50 icesheets 50 cretaceous 50 Proterozoic basement 50 altered ultramafic rocks 50 epithermal alteration 50 greenschist 50 Jakobshavn 50 rhyolitic 50 heliosphere 50 volcanic activity 50 outcropping mineralized 50 collagen fibrils 50 felsic intrusion 50 prospective stratigraphy 50 type Ia supernova 50 Nechalacho deposit 50 brittle ductile 50 brecciated limestone 50 herbivorous dinosaurs 50 neutron star 50 planktonic foraminifera 50 AGNs 50 foreland 50 lunar equator 50 Molybdenum mineralization 50 planetary nebulae 50 massive sulfides 50 Snowball Earth 50 stratigraphically controlled 50 felsic metavolcanics 50 temperature gradients 50 syenite gneiss 50 Matoush fault 50 primate lineage 50 unmineralized 50 stockwork breccia 50 tungsten isotopes 50 FeO 50 lake sediments 50 olivine mineral 50 nebular 50 Pipe alteration 50 microbial mats 50 scarps 50 hydrate deposits 50 Ultramafic 50 pyrrhotite chalcopyrite 50 seismicity 50 Noachian era 50 extinct volcanoes 50 icy comets 50 Vastitas Borealis 50 chromitite layers 50 skarn alteration 50 Chazy Reef 50 nacre 50 Proterozoic age 50 planetary orbits 50 Ediacaran 50 moraines 50 dike swarm 50 Shaft Zone 50 volcanic cone 50 disseminated arsenopyrite 50 jovian 50 granodiorites 50 geophysical conductors 50 Antarctic glacier 50 pillow lavas 50 dolomitic 50 sulphide minerals 50 chalcedonic quartz 50 spicules 50 subvolcanic 50 eluvial 50 sulphide mineralization 50 electromagnetic anomaly 50 gyres 50 felsic dyke 50 Venusian atmosphere 50 martensite 50 ultramafic 50 lunar soil 50 palaeo 50 carbonaceous material 50 mineralizing 50 metavolcanic rocks 50 permafrost melts