Related by context. Frequent words. (Click for all words.) 59 isotopic composition 57 isotope ratios 54 foraminifera 53 marine sediments 53 abundances 53 biogenic 53 biogeochemical 53 aragonite 52 upwellings 52 seawater 52 oxygen isotopes 51 lavas 50 noble gases 50 deglaciation 50 igneous rocks 50 lake sediments 50 isotopic 50 hydrologic cycle 49 interglacial period 49 magmas 49 abiotic 49 spatial scales 49 hydrothermal activity 49 microfossils 49 #ppb [003] 49 ALH# 48 sediment samples 48 terrestrial ecosystems 48 atmospheric CO 48 interglacial 48 solar nebula 48 oceanic crust 48 sulphates 48 tropospheric 48 atmospheric methane 48 fluxes 48 temperature gradient 48 diatom 47 elemental composition 47 diatoms 47 plankton blooms 47 hydrological cycle 47 perchlorates 47 aerosol particles 47 inter tidal 47 clathrates 47 lunar soil 47 paleoclimate 47 hydrothermal vent 47 acidified 47 anomalously 47 degassing 47 basaltic 47 salinity 47 phytoplankton blooms 47 irradiance 47 curies 47 lithosphere 47 embayment 46 El Niño Southern Oscillation 46 exosphere 46 olivine 46 temperature salinity 46 amphipods 46 volcanic vents 46 chemical composition 46 paleo 46 aromatic hydrocarbons 46 physicochemical 46 naturally occuring 46 Quaternary 46 Geochemistry 46 radiocarbon 46 metallicity 46 naturally occurring mineral 45 polar vortex 45 Equatorial Pacific 45 spherules 45 numerical modeling 45 radionuclide 45 sorption 45 ionised 45 apatite 45 Cenozoic 45 mud volcanoes 45 biota 45 insolation 45 silicates 45 radioactive decay 45 sediments 45 glaciations 45 sulfide minerals 45 atmospheric CO2 concentrations 45 meteorite impacts 45 bathymetric 45 crustal 45 stromatolites 45 benthic 44 SSTs 44 geoid 44 geomorphology