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(Click for frequent words.) 48 abyssal plain 48 Lake Untersee 48 Paleocene Eocene 48 terminal moraine 47 Amundsen Sea 47 driftless area 47 Bylot Island 47 Transantarctic Mountains 45 bubbling geysers 45 Boar Tusk 45 Pompey Pillar 45 Navajo Sandstone 45 icebergs calving 45 calving glaciers 44 Cretaceous periods 44 microbialites 44 tidewater glaciers 44 Geologically speaking 44 Cascadia Meteorite Laboratory 44 sub glacial lakes 44 Mount Mazama 44 glaciers retreated 44 Anvers Island 44 glacier carved 44 granite outcroppings 44 fossilized coral 43 icefield 43 Nunavut Territory coal 43 aspen grove 43 conodonts 43 Misty Fjords National 43 volcanic caldera 43 Bellingshausen Sea 43 Kasatochi 43 Hellas Basin 43 Terry Toedtemeier 43 glacial moraine 43 solidified lava 43 Weddell Sea 42 ancient petroglyphs 42 Prydz Bay 42 Athabasca Glacier 42 pallasite meteorite 42 Ediacara 42 Toolik Lake 42 abyssal plains 42 cratons 42 solidified lava flows 42 outwash 42 glacial fjord 42 sediments deposited 42 Antarctic glacier 42 North Fork Toutle 42 Matanuska Glacier 42 Climber dies 42 granite spiers 42 Birders flock 42 esker 42 subarctic 42 basalt cliffs 42 forams 42 Jakobshavn Glacier 42 driftless 42 Arlene Shechet 42 Anasazi ruins 42 Wynooche 42 glaciers receded 42 Joyce Tenneson 42 stromatolite 42 Spitsbergen Norway 42 Quelccaya ice cap 42 famed naturalist 41 hydrothermal explosions 41 impermeable shale 41 meteor crater 41 flood basalts 41 Hiker dies 41 pliosaur ferocious predator 41 Pastoruri 41 Brownlee Reservoir 41 Mendenhall Glacier 41 seafloor sediments 41 Sermilik Fjord 41 methane seeps 41 Dry Valleys 41 Lassen Peak 41 Alaskan glaciers 41 Antarctic Peninsula 41 Teenager Drowns 41 Glacial Lake 41 Cenozoic era 41 basalt rock 41 lunar meteorites 41 Nunamiut 41 Wallowas 41 Mount Bosavi 41 Bookcliffs 41 Jakobshavn glacier 41 mammal fossils 41 noon Mendenhall Glacier 41 Tharsis Rise 41 glacially carved 41 Norris Geyser Basin 41 Huybers 40 icefields 40 Disko Bay 40 lava flowed 40 GLR dec 40 seafloor sediment 40 Nisqually Glacier 40 Martian craters 40 Antarctic ice 40 Quelccaya 40 Ruwenzori Mountains 40 iridium layer 40 karst topography 40 Chasma Boreale 40 Cryogenian 40 Kangerdlugssuaq 40 Beardmore Glacier 40 glaciations 40 Brigham Grette 40 paleoecologist 40 Sandhill cranes 40 Gakkel Ridge 40 Syrtis Major 40 bison graze 40 Chugach Range 40 Ice Shelf 40 Josberger 40 Nulhegan 40 Kingman Reef 40 Malmbjerg molybdenum development 40 Polar explorers 40 porous sandstone 40 speleothems 40 rocky crags 40 Hadean 40 interglacial periods 40 lunar crust 40 Seafloor 40 Seamounts 40 Dinosaur Quarry 40 Greenland glacier 40 Roland Burgmann 40 Carboniferous 40 Jakobshavn 40 limestone caverns 40 cinder cone 40 Icefields 40 temperate rainforest 40 wadeable 39 Cryogenian period 39 Antarctica 39 Godwin Austen 39 Laurentide Ice Sheet 39 Tertiary Period 39 Michael Studinger 39 Icefield 39 Exit Glacier 39 Beartooths 39 Pleistocene Epoch 39 rubbly 39 SHIPSHEWANA 39 Pu'u O'o crater 39 Allysha 39 lakebed sediments 39 E. Kearsley Flint 39 Gary Winogrand 39 Ice Ages 39 Lago Argentino 39 Noachian era 39 Adélie penguins 39 sedimentary layers 39 glacial landforms 39 Fruitport Calvary 39 Navajo sandstone 39 Siple Dome 39 fossil vertebrates 39 Cathedral Caverns 39 benthos 39 hummocky 39 Petrified Wood 39 Cenozoic Era 39 grandparents homesteaded 39 Jupiter moons Europa 39 Garrett Hermanski 39 sediment cores 39 receding glacier 39 paleontology curator 39 ivory gull 39 Washakie Wilderness 39 silicate rocks 39 olivine rich 39 Perito Moreno glacier 39 Vergas Minn. 39 limber pine 39 eared grebes 39 drumlin 39 Biogeography 39 Hardanger Fjord 39 talus slopes 39 sedimentary deposits 39 Petermann Glacier 39 McMurdo Dry Valleys 39 martian rocks 39 Absaroka Mountains 39 glacial meltwater 39 sulfate minerals 39 Arabia Terra 38 icescape 38 Charcot Island 38 glaciers 38 marine sediments 38 Antarctic icebergs 38 boreal regions 38 Columbia Icefields 38 Auyuittuq National 38 Sphagnum 38 foraminifera 38 Interpretive Specialist 38 Pavlof 38 taiga forest 38 volcanic basalt 38 meteorite fragments 38 CU Boulder Cooperative 38 Miocene epoch 38 polynya 38 tufa towers 38 Alaskan glacier 38 Adelie penguins 38 glacier 38 Eocene 38 Paleogene 38 Cretaceous Period 38 Cambrian Period 38 Siberian Arctic 38 glacial 38 Presleys Country 38 sheet Summerhayes 38 layered bedrock 38 Sangre de Cristos 38 geochronology 38 volcanic craters 38 megadroughts 38 volcanic lava 38 mammoth tusks 38 Greenland 38 intertidal 38 hummocks 38 thawing tundra 38 LeConte Stewart 38 polar plateau 38 stalagmites 38 Vermilion Cliffs 38 Lophelia 38 glacial geology 38 warm interglacial periods 38 Archaic Period 38 glacier calving 38 Kendalyn 38 Chippewa Flowage 38 diatom 38 desolate expanse 38 Antarctic glaciers 38 supervisory ranger 38 subaqueous 38 Alsek 38 accomplished glaciologists 38 melting glacier 38 CU Boulder geological 38 cinder cones 38 glaciers melted 38 Snow dusts 38 Antarctic icecap 38 Mount Horeb Wis. 38 renowned ornithologist 38 Niwot Ridge 38 retreating glaciers 38 Late Paleozoic 38 glacial retreat 38 Antartic 37 Burgess Shale 37 karst limestone 37 Tangle Lakes 37 calderas 37 tabular icebergs 37 limestone outcroppings 37 Cape Alava 37 penguin rookery 37 paleomagnetic 37 Late Ordovician 37 Gulkana 37 ice calved 37 Sediments 37 Snowball Earth 37 seabed sediments 37 supervolcanoes 37 Jakobshavn Isbrae 37 Wasatch Plateau 37 El Diente 37 Cap Wilderness 37 moon gravitational pull 37 basaltic lava 37 Larsen Ice Shelf 37 Sea Lion Caves 37 Ares Vallis 37 Turnagain Pass 37 GC def 37 Whillans Ice Stream 37 talus slope 37 Sarahsaurus 37 Arctic Ocean 37 aragonite 37 Fram Strait 37 Weddell seals 37 Early Cretaceous 37 harlequin frogs 37 Harding Icefield 37 Hiker rescued 37 musk oxen 37 volcanic cone 37 Greenland Ice 37 bonebed 37 Maligne Lake 37 Subglacial 37 Cape Royds 37 FTs lift 37 Tunica RiverPark 37 comets orbiting 37 Subarctic 37 Lake Agassiz 37 Tad Pfeffer 37 mineral olivine 37 hoarfrost 37 drumlins 37 towering icebergs 37 Chetco Lane 37 Moscoe Channel 37 crinoids 37 Kantishna 37 Quaternary 37 Allakaket 37 Petit Piton 37 volcano caldera 37 tidewater glacier 37 Elkhorn Mountains 37 Alaskan tundra 37 Sei whales 37 Ice Age glaciers 37 volcano Olympus Mons 37 mesa tops 37 lichen covered 37 carboniferous 37 comet nuclei 37 Pliocene 37 Farm Corn Maze 37 Heffley JJ 37 fossil specimens 37 multicellular creatures 37 fossils unearthed 37 colder denser 37 Lake Vostok 37 Deluges 37 paleobotanist 37 Climber rescued 37 southern latitudes 37 landforms 37 melting glacial 37 geomorphic 37 glacial moraines 37 Nan Madol 37 Sinus Meridiani 37 Gullfoss waterfall 37 reef habitats 37 vertebrate paleontologist 37 Kachina dolls 37 Triassic Period 37 western Antarctic Peninsula 37 Cambrian Explosion 37 penitentes 37 Late Jurassic 37 Eemian 37 tropical coral reefs 37 Goldia 37 adjunct curator 37 canoe outfitter 36 refugia 36 Noachian 36 arctic tundra 36 Historic Byway 36 bryozoan 36 Antarctic 36 subglacial lake 36 Tasman Glacier 36 Strat Land 36 evaporite 36 Martian meteorite 36 Patagonian Ice 36 upwellings 36 Global Volcanism Program 36 interglacial period 36 geophysicist Scott Luthcke 36 Perseid meteor showers 36 lacustrine 36 basalt formations 36 Sebec Lake 36 Saturn Enceladus 36 Pleistocene 36 supervolcano eruption 36 Kenai Fjords 36 Anaktuvuk Pass 36 Verna Mae 36 antarctic ice 36 Grinnell Glacier 36 Lake Yoa 36 snowmobiled 36 inch Samuel Oschin 36 sagebrush steppe 36 ostracods 36 Teton Range 36 Vatnajokull 36 Glacial 36 Kotzebue Alaska 36 Wishon Reservoir 36 DU #:#.# 36 Braedyn 36 Michele Salvatori 36 Dacota 36 southern supercontinent 36 Bitterroots 36 uninhabited atoll 36 Vanishing Breed 36 6News meteorologist 36 Jurassic Period 36 rafted debris 36 Middle Paleolithic 36 Martian landscape 36 treeless tundra 36 Yellowstone caldera 36 abyssal 36 Laptev Sea 36 Chimney Tops 36 melting icebergs 36 underwater volcanoes 36 Columbia Icefield 36 Holocene 36 Ronne Ice Shelf 36 basalt 36 Iguazu falls 36 Puerto Rico Trench 36 Kahiltna 36 grabens 36 finely layered 36 moulins 36 isostatic rebound 36 Chihuahuan desert 36 Fortymile River 36 Edgemont SD 36 Greenland Glaciers 36 geomicrobiology 36 lunar soil 36 receding glaciers 36 treeless expanse 36 Martian rocks 36 Permian Period 36 muskoxen 36 basalts 36 Late Devonian 36 Power outage darkens 36 warmings 36 Tallgrass Prairie Preserve 36 Hydrothermal vents 36 Andean snowmelt 36 Hurtigruten cruise 36 polar caps 36 Bramley Murton 36 tectonic activity 36 Natalia Rybczynski 36 Marengo Cave 36 Phanerozoic 36 Paleozoic Era 36 Willow Slough 36 Alpaca Ranch 36 Olde Fashioned Christmas 36 megafaunal 36 Svalbard islands 36 Earth crust 36 Uganda Rwenzori Mountains 36 fiords 36 oceanographers 36 alluvial soils 36 Eocene epoch 36 Planitia 36 abyssal depths 36 Bedout 36 cragged 36 Uintas 36 glacier melts 36 ponderosa pine forests 36 Kintla 36 covers Hayward Cherryland 36 subglacial 36 Effie Mae 36 glaciation 36 satellite altimetry 36 Younger Dryas 36 McHatten 36 Antarctic Dry Valleys 36 hydrothermal activity 36 saline aquifers 35 Wrangell St 35 Neutron stars 35 oligotrophic 35 coniferous forests 35 Greenland glaciers 35 phyllosilicate 35 polar explorer Roald Amundsen 35 Greenland ice 35 Hannah Heidenreich 35 dinosaurs roamed 35 alpine tundra 35 bedrock outcrops 35 inner asteroid belt 35 Cory Mirto 35 Antarctic Ice Shelf 35 Deadhorse Alaska 35 silty 35 massifs 35 martian meteorites 35 Brevig Mission 35 icecaps 35 penguin colonies 35 walrus polar bears 35 Holy Cross Wilderness 35 Last Glacial Maximum 35 LongHorn Steakhouse Brings 35 Dorthea Lange 35 Koyukuk River 35 Wilkins Ice Shelf 35 Kilimanjaro glaciers 35 sedimentary rock 35 Meridee 35 Kazlowski 35 Heasler 35 ONEIDA STREET 35 golden toad 35 fine grained sediment 35 bird watcher paradise 35 extinct volcanoes 35 Helheim glacier 35 Endurance crater 35 Sechura Desert 35 Ordovician 35 treasure hunter Mel 35 sediments 35 Mammoth Site 35 polar icecap 35 Neogene 35 glaciers recede 35 volcanic mudflow 35 heavily cratered 35 Sedimentary rocks 35 moraines 35 Appy Sluijs 35 polar craters 35 Extinctions 35 cataclysmic eruption 35 Wrangell Mountains 35 microfossils 35 Yual Banks 35 alluvial plains 35 Comagic 35 Cambrian Ordovician 35 Laysan Island 35 Yellowstone Caldera 35 lichen 35 Capay Valley Vineyards 35 Gusev crater 35 Archaean 35 Nyac 35 austral summer 35 Niverson 35 Maro Reef 35 Kittlitz murrelet 35 Messinian 35 Talkeetna Alaska 35 Correne 35 Puijila 35 necked dinosaur 35 BOZ def 35 Broken Obelisk 35 Laurentide ice sheet 35 Cretaceous 35 routinely sloughed off 35 Khumbu Glacier 35 Paleo Indians 35 Breashears 35 stratovolcano 35 Ontario Lacus 35 Arctic icecap 35 Fra Mauro 35 Kay Bidle 35 icecap 35 escarpments 35 Ediacaran Period 35 Doomsday Seed Vault 35 basaltic rocks 35 magmatism 35 Navajo rug 35 Icy Cape 35 COROT 7b 35 Permafrost 35 Pleistocene Age 35 km3 35 Highleyman 35 planet Gliese #g 35 Tatshenshini River 35 glacial silt 35 Otto Bliesner 35 windblown sand 35 splits twinbill 35 Nares Strait 35 antarctic 35 Antarctic peninsula 35 alpine glaciers 35 basalt flows 35 H LBF #:# 35 frozen wastelands 35 biogeochemical processes 35 Ediacaran 35 lichens 35 Pleistocene Ice Age 35 Tiger Swallowtail 35 Axel Heiberg 35 Disko Island 35 warship Vasa 35 glaciated 35 voyaged 35 Cretaceous Tertiary 35 Son Doong 35 coldest driest 35 headwater stream 35 Kemink 35 Glaciologists 34 STEVE EMBER 34 Arresting officer T. 34 unofficial chronicler 34 iceberg calving 34 Socompa 34 coelacanths 34 Stefan Petrovic 34 megadrought 34 arctic explorer 34 Meade Mellette 34 Permian extinction 34 Antarctic Ice 34 geomorphologist 34 Sedonia 34 snowscape 34 Warmer oceans 34 Gamburtsev 34 metamorphic rock 34 Sermeq Kujalleq 34 Alabaster Caverns 34 grassy plains 34 Lonnie Dupre 34 Yosemite Yellowstone 34 Ellesmere Island 34 igneous rock 34 Tianshan Mountain 34 Sipsey River 34 Branock 34 Greenland Antarctica 34 Ammassalik Island 34 Ila Mae 34 Cascadia fault 34 paddlewheel boat 34 Cenozoic 34 GJ#b 34 Montesano Wash. 34 megafloods 34 erosional 34 icefalls 34 Shad O'Neel 34 icy moons 34 geologic 34 Cascade Chouteau 34 Snake River Plain 34 permafrost soils 34 Admiralty Island 34 P/# A2 34 lodgepole pine forest 34 Vatnajökull 34 granodiorite porphyry 34 Gondwanan 34 marine organisms 34 basalt lava 34 Spitzbergen 34 Ross Ice Shelf 34 glacial ice 34 semidesert 34 pinon pines 34 Chippewa Moraine 34 Martian terrain 34 goethite 34 Fomalhaut b 34 PREP GIRLS BASKETBALL 34 permanently shadowed craters 34 precipitous cliffs 34 Kristin Sabers 34 Jewel Cave 34 bullet pocked stucco 34 Chilkoot Pass 34 lake sediments 34 Yup'ik Eskimos 34 palaeo 34 Rosie Stancer 34 Upper Paleolithic 34 zircon crystals 34 volcanoes erupt 34 Ozark Mountains hotspot 34 beaded moccasins 34 Helheim Glacier 34 Melting Arctic 34 Informationist Crown 34 GLA def 34 Greenlander 34 Plainview FFA 34 large oceanic plateaus 34 Antarctica Amundsen 34 Cape Adare 34 kyr 34 KT boundary 34 CAS Mxd 34 barren tundra 34 chondrites 34 Jurassic Cretaceous 34 paleoclimatic 34 Redfish Lake 34 Inupiaq Eskimo 34 Great Oxidation Event 34 undersea volcanoes 34 Gregg Scarlett Johannson 34 Mars Meridiani Planum 34 pumice plain 34 Martian dunes 34 Cafe Strudel 34 Pedro Martinez Arbizu 34 #/#b K. [001] 34 Harbour Nfld 34 hypoxic zone 34 avian ecologist 34 Perito Moreno 34 Taku Glacier 34 Hesperian epoch 34 planet HD #b 34 Palaeocene Eocene Thermal Maximum 34 Helheim 34 ancient supercontinent 34 Jonny Copp 34 evaporite deposits 34 Miocene Epoch 34 Kelp forests 34 cave stalagmites 34 depositional 34 fissure eruption 34 Moho 34 oxygen isotopic 34 Martian crater 34 Greenland icecap 34 molten magma 34 quaking aspen 34 mammoths 34 ocean 34 Galen Rowell 34 subducted 34 disappearing glaciers 34 oceanic lithosphere 34 coral reef 34 temperate forests 34 Serengeti plains 34 Ny Alesund 34 SHIRLEY GRIFFITH 34 balds 34 Floods engulf 34 Falls Mont 34 Saturn moons 34 Olympus Mons 34 avid backcountry skier 34 magma chamber 34 David Frownfelder covers 34 Mesolithic 34 Pour melted butter 34 calcite 34 unspoiled wilderness 34 Tatshenshini 34 glacial lake 34 famed photographer Ansel 34 Seward Peninsula 34 shadowed craters 34 glaciated peaks 34 Mendenhall Glacier Visitor 34 icebergs 34 whaleback 34 polynyas 34 GIRLS TEAM SCORES 34 Svalbard archipelago 34 Borah Peak 34 reefs 34 Pacific Gyre 34 ostracodes 34 mid latitudes 34 Hawaii Mauna Kea 34 crustal thickness 34 plankton 34 Pendleton Pocahontas 33 glaciers melt 33 Pliocene epoch 33 ejecta blanket 33 tole painted 33 Arctic explorer 33 Rozella 33 Exploring Expedition 33 Cellars Winery 33 sandstone buttes 33 lava eruptions 33 ocean basins 33 singer Richard Sterban 33 mass extinctions 33 turquoise coral 33 Maastrichtian 33 igneous rocks 33 geologically 33 Homo sapiens evolved 33 intraplate 33 #/#/# # [001] 33 Titanic hull 33 meteor impacts 33 phreatic 33 Torland 33 parasiticus 33 Laurasia 33 GLR def 33 Flattops 33 Cambrian explosion 33 Creek Trailhead 33 exosphere 33 paleoenvironmental 33 Arctic permafrost 33 subglacial lakes 33 Ark. Died 33 Neukum 33 separate beachings 33 crater rim 33 invertebrate zoology 33 polar 33 Lamont Doherty 33 midlatitude 33 Imja 33 Rotary Pancake Breakfast 33 Anthony Barnosky 33 Neal Beidleman 33 Natalia Shakhova 33 paleo 33 Greenbo Lake 33 Schubitzke 33 eskers 33 tropical glaciers 33 Holocene epoch 33 singer Marty Raybon 33 Wollaston Domain 33 sedge meadow 33 Pondera Teton 33 Mount LeConte 33 Arctic 33 Mummy Range 33 oxygen isotope 33 Hamish Pritchard 33 Pleistocene era 33 Leland Earlville 33 bleached corals 33 permafrost melts 33 supercontinents 33 Orogeny 33 Hastenrath 33 anoxic 33 ocean sediment cores 33 fault scarps 33 yellow bellied marmots 33 interglacial 33 Kaci Menz 33 interstellar dust grains 33 retreating glacier 33 Porsild 33 permafrost 33 Siberian permafrost 33 Isaiah Honick 33 Teton Mountains 33 Weston Imogen Cunningham 33 glaciated terrain 33 arctic 33 TEMPORARY RESTRAINING ORDER CLINICS 33 Mount Lemmon Cafe 33 volcanic ridges 33 NASA rovers Spirit 33 Ola Belle 33 deep convective clouds 33 Kayli Combs 33 tephra 33 MAR ECO 33 benthic foraminifera 33 Precambrian 33 Pleistocene epoch 33 Virunga Mountains 33 Arctic Archipelago 33 Permian Triassic extinction 33 Harney Pond 33 Cataract Canyon 33 faunal 33 NEWBERRY OPERA HOUSE 33 tropopause 33 overland expedition 33 Gondwanaland 33 Glaciologist 33 continental crust 33 Meridiani 33 anamensis 33 Upper Palaeolithic 33 claystone 33 Jurassic sandstone 33 Tablerock 33 von Frese 33 Vagabond Blues 33 deepest darkest steamiest jungle 33 ALH# 33 lavas 33 spurs saddles 33 Will Rincker 33 steelhead spawning 33 Late Cretaceous 33 foreland 33 Surtsey 33 glacial earthquakes 33 Beringia 33 permafrost degradation 33 Tues. Night Mxd 33 Sun. Nite Cpls 33 Bindschadler 33 canoe outfitters 33 clay subsoil 33 Los Glaciares National 33 solar nebula 33 Emilee Olson 33 Amazonian rainforest 33 hidden crevasses 33 seamounts 33 overthrust 33 Dan Chure 33 meteorite impacts 33 Middle Pleistocene 33 sequoias 33 glacial interglacial 33 explosive volcanism 33 mere dustings 33 ski descents 33 Curt Stager 33 Antelope Refuge 33 airglow 33 sedimentary layer 33 Maui Haleakala 33 biogeographic 33 Thawing permafrost 33 interstellar cloud 32 Gila Wilderness 32 hydrosphere 32 glacier terminus 32 Fudge Factory 32 Sisseton SD 32 phyllosilicates 32 Strasburg Zeeland 32 graben 32 hydrothermal fluid 32 degrees Fahrenheit warmer 32 Katie Bourk 32 olivine 32 faunas 32 tufa 32 aspen trees 32 Driggs Idaho 32 H wbf 32 erupting lava 32 singer Raul Malo 32 Terre Adelie 32 Permian Triassic 32 Mount Pinatubo exploded 32 spikers sweep 32 collisional 32 Dubois Wyo.