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(Click for frequent words.) 71 sedimentary deposits 68 seafloor sediments 67 subglacial 66 turbidites 66 seabed sediments 66 basaltic rocks 66 lavas 65 marine sediments 65 sediments 65 loess 64 subglacial lakes 64 claystone 64 fine grained sediment 64 silicate rocks 64 Neoproterozoic 64 halite 64 Laurentide Ice Sheet 64 sedimentary layers 64 cratons 63 basaltic lava 63 porous sandstone 63 carbonate sediments 63 Amundsen Sea 63 flood basalts 63 Siple Dome 63 lakebed sediments 62 pillow lavas 62 cinder cones 62 phyllosilicate 62 basalts 62 Sr Ca 62 glacial meltwater 62 abyssal plain 62 erosional 62 abyssal plains 62 olivine rich 62 Laurentide ice sheet 62 peridotites 62 igneous rock 61 volcanic basalt 61 siliciclastic 61 seafloor sediment 61 Cryogenian 61 calderas 61 magma chamber 61 strontium isotope 61 magmatism 61 stromatolite 61 evaporite 61 molten magma 61 porous limestone 61 moulins 61 earths crust 61 plagioclase 61 microfossil 61 deep convective clouds 61 glacial melt 61 km3 61 layered ultramafic 61 hydrothermal fluid 60 paleomagnetic 60 sedimentary rock 60 Athabasca sandstone 60 glaciers retreated 60 ocean basins 60 magmas 60 forams 60 tuffaceous rocks 60 glaciations 60 downwelling 60 goethite 60 volcanic lava 60 hydrated silica 60 anorthosite 60 dolomites 60 glaciers receded 60 Last Glacial Maximum 60 yardangs 60 Syrtis Major 60 dolerite 60 basalt flows 60 McMurdo Dry Valleys 60 crustal rocks 60 igneous rocks 60 Sediments 60 lapilli 60 Fram Strait 60 olivines 59 hydrothermal activity 59 coccolithophores 59 lava eruptions 59 sediment 59 Amundsen Sea Embayment 59 basalt 59 silica carbonate 59 lunar crust 59 Middle Devonian 59 paleochannel 59 comet nuclei 59 Ontario Lacus 59 glacial retreat 59 mantle convection 59 alluvial sediments 59 Yellowstone caldera 59 phyllosilicates 59 ignimbrite 59 mineral olivine 59 glacial till 59 Late Paleozoic 59 microfossils 59 Snake River Plain 59 isotopic ratios 59 stromatolites 59 continental crust 59 Neogene 59 hematite mineral 59 boreal regions 59 Mg Ca 59 carbonate minerals 59 lacustrine 59 ferric oxides 59 hornblende 59 Paleocene Eocene 59 sulfide minerals 59 lunar magma 59 sediment cores 59 KT boundary 59 jarosite 59 Navajo sandstone 58 basaltic rock 58 clathrates 58 granitoids 58 sheet Summerhayes 58 sulphidic 58 Phanerozoic 58 lava flowed 58 olivine crystals 58 mudstone 58 Navajo Sandstone 58 Ares Vallis 58 disseminated pyrrhotite 58 upwellings 58 Permo Triassic 58 amphibolites 58 asthenosphere 58 pyrrhotite chalcopyrite 58 mineralized mafic 58 atmospheric methane 58 limestone bedrock 58 pediment gravels 58 basalt volcanic 58 basaltic 58 methane CH4 58 glaciation 58 Dry Valleys 58 anhydrite 58 ultramafic intrusives 58 meltwater 58 pelitic gneiss 58 anticlines 58 Quaternary 58 deglaciation 58 basalt lava 58 grabens 58 alluvial plains 58 Hesperian epoch 58 overlying sedimentary 58 komatiitic 58 interglacial periods 58 molten rocks 58 ancient lava flows 58 impermeable shale 58 Toba eruption 58 magma ocean 58 lithosphere 58 depositional environment 58 lake sediments 58 Appy Sluijs 57 megadroughts 57 windblown sand 57 iridium layer 57 clasts 57 benthos 57 Gakkel Ridge 57 glacial moraine 57 planktonic foraminifera 57 hematite goethite 57 ignimbrites 57 surface hoar 57 oceanic crust 57 ppbv 57 felsic tuff 57 Palaeozoic sedimentary 57 metamorphic rock 57 silicified zone 57 clastic sediments 57 hydrated minerals 57 volcanic tuff 57 isotopic signature 57 brachiopods 57 kyr 57 speleothems 57 geomorphic 57 outwash 57 Cretaceous sediments 57 volcanism 57 Valles Marineris 57 disseminated chalcopyrite 57 overlying layers 57 exhalite 57 poleward 57 tectonic plate movements 57 Noachian 57 olivine 57 Paleozoic sedimentary 57 atmospheric moisture 57 silicate dust 57 sylvite 57 sand silt 57 cherts 57 Siberian Traps 57 granite gneiss 57 andesitic rocks 57 dacitic 57 Noachian era 57 Cambrian Ordovician 57 rifting 57 abyssal 57 landforms 57 isotopic composition 57 carbon isotopes 57 Meridiani 57 alluvium 57 polar caps 57 spherules 57 ocean sediment cores 57 chloride concentrations 57 Cenozoic Era 57 upflow 57 eclogite 57 polar vortex 57 oligotrophic 57 upland forests 57 variably silicified 57 Sediment cores 57 ostracods 57 sedimentological 56 evaporite deposits 56 saprolitic 56 conodonts 56 subhorizontal 56 chrysocolla 56 Eocene Epoch 56 mid latitudes 56 siliceous sediments 56 surface temperatures SSTs 56 bedrock outcrops 56 aerosol particles 56 chromitite layers 56 latite 56 colluvial 56 intraplate 56 Transantarctic Mountains 56 embayment 56 alluvial plain 56 pyroclastics 56 Sedimentary rocks 56 basalt rock 56 volcanic sediments 56 overlying sandstone 56 receding glaciers 56 sulfidic 56 Early Cretaceous 56 tephra 56 calcite 56 hydrothermal fluids 56 gabbros 56 Middle Miocene 56 karst terrain 56 melted glacial 56 ponded 56 carbonaceous material 56 coral skeletons 56 midlatitudes 56 Arabia Terra 56 hydrological cycle 56 intensely oxidized 56 basalt rocks 56 seafloor methane 56 lobate 56 stratigraphic sequence 56 pegmatite dyke 56 arsenopyrite pyrite 56 stalagmite 56 sulfate minerals 56 stratovolcano 56 seafloors 56 foraminifera 56 deformational 56 subsurface ocean 56 carbon isotope ratios 56 calcareous 56 sulphide minerals 56 Late Ordovician 56 clastic 56 volcanic magma 56 peridotitic 56 Permian Period 56 diabase 56 melt inclusions 56 icy crust 56 galactic disk 56 sub glacial lakes 56 tectonic activity 56 mineralized rhyolite 56 locally graphitic 56 colliding tectonic plates 56 interglacial period 56 icesheet 56 andesite flows 56 Maastrichtian 56 lava tubes 56 Martian craters 56 komatiite 56 Glacial Lake 56 ultramafic rock 56 silicic 56 Fossae 56 oxidized mercury 56 carboniferous 56 crustal 56 silts 56 ejecta 56 glaciers melted 56 karst topography 56 dwelling organisms 56 Plio Pleistocene 56 komatiites 56 Caballos Formation 55 solidified lava 55 silty 55 porphyritic andesite 55 evaporite minerals 55 biogeochemical 55 martian meteorites 55 volcanic caldera 55 rhyolite tuff 55 Lake Vostok 55 megaflood 55 receding glacier 55 paleoenvironmental 55 Outcrops 55 NASA QuikScat satellite 55 circular depressions 55 granodiorite porphyry 55 ejecta blanket 55 hydrothermal magnetite 55 Lophelia 55 metamorphic rocks 55 sulfur isotope 55 Messinian 55 karst limestone 55 iron oxides 55 meteor impacts 55 ancient supercontinent 55 dunite 55 sulfate salts 55 geothermal gradient 55 chlorophyll concentrations 55 glacial sediments 55 mantle plumes 55 oxygen isotope 55 Paleogene 55 gabbro dykes 55 amorphous silica 55 microbialites 55 Fe Mn 55 undersea volcanoes 55 mud volcanoes 55 Sinus Meridiani 55 illite 55 lunar meteorites 55 ancient lakebed 55 isotope ratios 55 carbonatized 55 lunar craters 55 Jurassic limestone 55 Deccan Traps 55 chondrules 55 limonitic 55 manganese oxide 55 aragonite 55 peridotite 55 sedimentary rocks 55 isostatic rebound 55 silty clay 55 tholins 55 massifs 55 rhyolitic 55 ferruginous 55 diatoms 55 alluvial soils 55 Hellas Basin 55 compressional 55 bathymetry 55 hydrothermally 55 glacier melts 55 secondary chalcocite 55 polynya 55 Alpine glaciers 55 Geochemistry 55 ecoregion 55 fissure eruption 55 thawing permafrost 55 Arctic permafrost 55 sulfur isotopes 55 aeolian 55 Martian crust 55 Oligocene epoch 55 chlorine monoxide 55 Doushantuo Formation 55 diatom species 55 granitic basement 55 cyanobacterial blooms 55 paleoclimatic 55 Late Miocene 55 rhyolite dikes 55 mineral apatite 55 tectonically 55 Prairie Evaporite Formation 55 teragrams 55 pyrope garnet 55 quadrillion gallons 55 cave stalagmites 55 Aptian 55 pegmatitic 55 deoxygenated 55 volcaniclastics 55 andesitic 55 Earth crust 55 layered mafic 55 tectonic uplift 55 coniferous forests 55 polar craters 55 gabbroic 55 disseminated arsenopyrite 55 supercontinents 55 paragneisses 55 sedimentary 55 overlying sediments 55 refugia 55 oxygen isotope ratios 55 Reiner Gamma 55 oceanic circulation 55 granitic rock 55 crinoids 55 palaeoclimate 55 meteorite fragments 55 Candor Chasma 55 volcanoclastic rocks 55 geochronology 55 kaolinite 55 silicate minerals 55 mudstones 55 frazil ice 55 advection 55 sericitization 55 advanced argillic alteration 55 antarctic ice 54 smectite 54 ferrous oxide 54 fluid inclusions 54 biotite rich 54 microbial mats 54 isotope composition 54 anomalously warm 54 mineral hematite 54 solar nebula 54 iron sulphides 54 tectonic movements 54 Late Devonian 54 cryovolcanism 54 glacial ice 54 amphipods 54 continental rifting 54 BIFs 54 stratiform 54 methane seeps 54 pyroxene 54 Jupiter moon Io 54 carbonaceous mudstone 54 Tibetan Plateau 54 Gamba sandstone 54 freshwater snails 54 volcanic vents 54 decaying vegetation 54 Great Oxidation Event 54 quartz sericite alteration 54 phreatic 54 saline aquifers 54 brittle deformation 54 bonebed 54 chlorite altered 54 xenoliths 54 geomorphology 54 embayments 54 Balarat Project 54 Gaetano Di Achille 54 polar latitudes 54 igneous intrusion 54 volcaniclastic rocks 54 quartz feldspar 54 hydrothermal vent 54 underwater volcanoes 54 Mariana Arc 54 Carboniferous 54 paleochannels 54 Microcystis 54 oxygen isotopes 54 zircons 54 Chicxulub Crater 54 Cretaceous Paleogene boundary 54 silicate mineral 54 primitive meteorites 54 sediment samples 54 pyrite galena 54 cenospheres 54 tidally 54 ocean eddies 54 shadowed craters 54 silica pyrite 54 rhyodacite 54 limestone xenoliths 54 Permian extinction 54 pillow lava 54 quartz alunite 54 fine grained sediments 54 chemosynthetic 54 terrestrial ecosystems 54 chalcedonic 54 Late Cretaceous 54 fine grained sandstone 54 volcaniclastic 54 metal zonation 54 Pyrrhotite 54 chloride salts 54 seawater pH 54 tropopause 54 alluvial gravels 54 diorites 54 graben 54 Domoic acid neurotoxin 54 drumlins 54 fossilized coral 54 concretions 54 overthrust 54 Banded Iron Formation 54 quartz grains 54 Cretaceous Tertiary boundary 54 turbidite 54 martian rocks 54 crossbedding 54 lava fountains 54 Paleozoic carbonate 54 Coma Cluster 54 Jakobshavn 54 Tharsis Rise 54 stalagmites 54 stalactite 54 lateritic 54 impermeable clay 54 sulfide deposits 54 melting glacier 54 disseminated sulphide mineralization 54 Felsic 54 ilmenites 54 Paleocene Eocene Thermal Maximum 54 increased storminess 54 structural lineaments 54 swirling dust devils 54 Tertiary volcanics 54 carbonate formations 54 amphibolite 54 sulfate aerosols 54 subaqueous 54 active volcanism 54 osmium 54 Upper Jurassic 54 Ediacara 54 hypoxic zones 54 mammal fossils 54 magnetite crystals 54 granitic pegmatite 54 spatial variability 54 olivine macrocrysts 54 hyper saline 54 moonlets 54 coarser grained 54 earth crust 54 Alaskite 54 recrystallized 54 hydrosphere 54 bedrock aquifers 54 reef habitats 54 loess soil 54 interferometric synthetic aperture radar 54 gneisses 54 sulfide veins 54 spinels 54 Nares Strait 54 fluorapatite 54 faunas 53 spodumene bearing 53 Brackish water 53 serpentinized 53 terrane 53 glacially carved 53 coralline 53 anthropogenic CO 53 ecoregions 53 benthic foraminifera 53 felsic intrusions 53 yedoma 53 hydrologic cycle 53 basalt cliffs 53 terminal moraine 53 Ordovician 53 specular hematite 53 Cerberus Fossae 53 Venusian atmosphere 53 Martian gullies 53 clay loam 53 foreland 53 retreating glaciers 53 Warmer oceans 53 subtidal 53 Archaean 53 deepwater corals 53 anthropogenic carbon dioxide 53 rotifer 53 Palaeozoic 53 interglacials 53 hematite chlorite 53 quartz feldspar porphyry intrusive 53 argillic altered 53 pyritized 53 supercontinent 53 magma chambers 53 cosmic ray flux 53 anticyclonic 53 Yellowstone Caldera 53 plankton blooms 53 lithospheric 53 Caloris basin 53 Arsia Mons 53 Chicxulub crater 53 icesheets 53 Antarctic glaciers 53 gravity anomalies 53 permafrost degradation 53 calcium sulphate 53 mineralized diorite 53 Paleozoic Era 53 pyroxenites 53 manganese oxides 53 eolian 53 Brahmaputra basin 53 magmatic 53 silicified limestone 53 inorganic mercury 53 oceanic lithosphere 53 spheroidal 53 Cenozoic 53 GJ#b 53 tropical troposphere 53 freshwater aquifers 53 tuffaceous sediments 53 unconformably overlain 53 olivine mineral 53 REE enriched 53 Martian dunes 53 landmasses 53 zinc sulfide 53 stockwork veining 53 geoelectric 53 crystalline silicates 53 glacial silt 53 quartz biotite 53 subsurface aquifers 53 Longmen Shan fault 53 dissolved salts 53 icy moons 53 permafrost melts 53 Chicxulub impact 53 quartz magnetite 53 La Niñas 53 interannual variability 53 iceberg calving 53 phytoplankton bloom 53 CMB radiation 53 greywacke 53 uraninite 53 #,#-#,# ft. 53 gyres 53 dense clumps 53 Snowball Earth 53 dike swarm 53 hypersaline 53 calcareous sandstone 53 southern latitudes 53 geological strata 53 atmospheric oceanic 53 permafrost 53 bioavailable iron 53 diatom 53 Weddell Sea 53 craton 53 isotopic compositions 53 jovian 53 volcanoclastic 53 geological stratum 53 Planitia 53 CaCO 3 53 subglacial lake 53 conical dome 53 talus slopes 53 calcic 53 coronal loop 53 adsorbate 53 glacial outwash 53 eluvial 53 algal mats 53 palaeo 53 Permian Triassic 53 Hadean 53 pyrrhotite mineralization 53 lakebed 53 stibnite 53 circumstellar disk 53 freshwater aquifer 53 mafic intrusive rocks 53 aerosol concentrations 53 microscopic phytoplankton 53 circumstellar 53 subseafloor 53 Greenland icesheet 53 single celled algae 53 pyrite alteration 53 lunar soil 53 magnesium sodium potassium 53 Globular clusters 53 oxygen isotopic composition 53 crystallites 53 sylvinite 53 mafic intrusive 53 carbonate veins 53 evaporites 53 isotope fractionation 53 hydrothermally altered 53 carbonaceous shales 53 atmospheric CO2 levels 53 Oort cloud 53 supergene enrichment 53 shallow overburden 53 extrusive 53 Sumatra Andaman earthquake 53 filamentary 53 Patagonian glaciers 53 geologic 53 iron sulphate 53 hematite magnetite 53 overthrust belt 53 Brunt Ice Shelf 53 atmospheric deposition 53 vuggy silica 53 polar icecap 53 ostracodes 53 vugs 53 depositional 53 gold geochemical anomalies 53 Middle Eocene 53 Earths crust 53 Cenomanian 53 Ediacaran 53 stony meteorites 53 sedimentary sequences 53 crackle breccia 53 groundwaters 53 calcium oxide 53 southern supercontinent 53 icefields 53 methane clathrates 53 erupting lava 53 sedimentary layer 53 Murchison meteorite 53 rhyolite domes 53 isotopic signatures 53 CAIs 53 sandstone formations 53 felsic tuffs 53 isotherm 53 interstellar dust grains 53 phytoplankton blooms 53 Aquifers 53 biotite alteration 53 Saharan Desert 53 porphyry intrusions 52 ankerite 52 silt 52 basaltic magma 52 supervolcanoes 52 oxygen isotopic 52 Orcus Patera 52 Greenland Ice 52 Lava flows 52 katabatic winds 52 altered felsic 52 lunar highlands 52 mafic flows 52 presolar grains 52 silicified outcrops 52 vuggy 52 Upper Carboniferous 52 deltaic 52 gneissic rocks 52 El Niños 52 dolostone 52 bentonite clay 52 Jurassic formations 52 metasediment 52 mafic intrusion 52 antimony Sb 52 Cambrian Period 52 Martian dust 52 Ice Ages 52 Martian meteorite 52 chalcopyrite mineralization 52 foehn 52 methanogenesis 52 limestone caves 52 contaminant plume 52 Larsen Ice Shelf 52 atmospheric circulations 52 Ordovician extinction 52 Greenland icecap 52 explosive eruptions 52 interstellar clouds 52 Lengai 52 shell midden 52 pyrite marcasite 52 sedimentology 52 matrix porosity 52 Kompoltowicz 52 river drainages 52 Ganges Brahmaputra 52 tonalite 52 tectonic stresses 52 fecal pellets 52 Caloris 52 Saharan dust 52 collisional 52 quartz feldspar porphyries 52 Rignot 52 lahars 52 vuggy quartz 52 semidesert 52 Hydrothermal 52 outlet glaciers 52 pillow basalts 52 mountain snowpacks 52 satellite altimetry 52 permeable sandstone 52 mesospheric 52 alluvial gravel 52 basalt formations 52 ah dus 52 meteorite impacts 52 disseminated sulfide 52 muscovite 52 hypoxic zone 52 greenschist facies 52 Eemian 52 volcanic arcs 52 photic zone 52 manganese dioxide 52 Methyl mercury 52 Bedout 52 underground aqueducts 52 stratus clouds 52 karst geology 52 sulphates 52 quartz alunite alteration 52 Sulphide mineralization 52 volumetrically 52 HiRISE images 52 geochemists 52 bryozoans 52 carbonatite dykes 52 subducting plate 52 limestones 52 gabbroic rocks 52 Greenland glacier 52 carnotite 52 icebergs calving 52 alunite 52 cirrus cloud 52 GtC 52 fumaroles 52 Tharsis 52 basinal 52 acid leached 52 Mars Meridiani Planum 52 Ordovician limestone 52 radiocarbon dated 52 sea hydrothermal vents 52 g/m3 52 chromosphere 52 pegmatitic granite 52 pyroclastic 52 ocean upwelling 52 sedimented 52 greywackes 52 microbial organisms 52 extinct volcanoes 52 pelitic 52 chalcopyrite bornite 52 peat bogs 52 diorite porphyry 52 graphitic conductors 52 explosive volcanism 52 Wallula Gap 52 hematitic 52 mineralized intrusive 52 microscopic bubbles 52 disappearing glaciers 52 finely disseminated 52 moonlet 52 bacterial decomposition 52 interbedded 52 supervolcano 52 glacial cycles 52 tropospheric 52 caprock 52 rock outcrops 52 Oceanus Procellarum 52 altered porphyry 52 pyroxenite 52 sandstone intervals 52 siltstone 52 Polycyclic aromatic hydrocarbons 52 epidote 52 volcanic gases 52 palaeochannels 52 thermal gradients 52 sulfide bearing 52 Martian meteorites 52 diffuse aurora 52 Kermadec Arc 52 gabbro intrusive 52 milky quartz 52 dielectric permittivity 52 otolith 52 magnetite alteration 52 oceanic plates 52 enargite 52 water vapor condenses 52 volcanogenic 52 adularia 52 Precambrian rocks 52 greisen 52 Elysium Planitia 52 salt crystals 52 silicified andesite 52 amphibolite facies 52 Quartz vein 52 barite veins 52 ocean ridges 52 Equatorial Pacific 52 sulphide alteration 52 Kasatochi 52 methane hydrate 52 comb jellies 52 karstic 52 biogeographical 52 pervasive silicification 52 quartz adularia 52 mineralogical composition 52 Calcium carbonate 52 quartz carbonate veining 52 Cretaceous Jurassic 52 Deluges 52 pyrrhotite pyrite 52 altered andesitic 52 fault scarp 52 heavily cratered 52 rhyolites 52 equatorial latitudes 52 saline formations 52 shallow depressions