Related by context. Frequent words. (Click for all words.) 70 sediment samples 66 lake sediments 60 sediments 54 radiocarbon dating 53 radiocarbon 53 fossils 52 geochemical 52 tissue samples 51 geochemistry 51 geologic 51 sediment 50 diatoms 50 isotopic 50 transect 50 oceanographers 50 Greenland Ice 50 abundances 50 Pliocene 49 landforms 49 measurements 49 glaciation 49 geological 49 diatom 49 Nature Geoscience 49 seismometers 49 stalagmites 48 volcanism 48 stalagmite 48 tectonics 48 geology 48 journal Geology 48 crustal 48 MODIS 48 seamounts 48 sedimentary basins 48 Geochemical 48 mineralogy 47 mid latitudes 47 British Antarctic Survey 47 permafrost 47 polar caps 47 glaciers 47 Late Cretaceous 47 marine organisms 47 aerial photographs 47 scanning electron microscope 47 specimens 47 atmospheric circulation 47 subduction zones 47 glacial ice 47 peat bogs 47 ICESat 47 nitrogen fixation 46 glaciologists 46 fossil 46 atmospheric carbon dioxide 46 datasets 46 streamflow 46 geologically active 46 atmospheric chemistry 46 sedimentary 46 pottery shards 46 oceanographic 46 Oceanography Centre 46 geological formations 46 gas hydrates 46 Envisat 46 intertidal 46 fossilized bones 45 ocean currents 45 marine ecologist 45 samples 45 Geology 45 Ordovician 45 geochemist 45 lichens 45 paleo 45 paleontological 45 geoscientist 45 Geological Sciences 45 Little Ice Age 45 geologists 45 subsurface 45 sedimentary rock 45 Antarctic Ice 45 seafloor 45 stratigraphy 45 Tibetan Plateau 45 benthic 45 fossilized remains 45 Antarctic Peninsula 45 topographic map 45 atmospheric CO2 45 magmatic 45 geochemical surveys 44 megafauna 44 Fossils 44 geologically 44 CO2 concentrations 44 outcrops 44 hydrophones