Related by context. Frequent words. (Click for all words.) 75 isotope ratios 73 isotopic composition 68 elemental composition 66 isotopic 66 goethite 66 osmium 66 morphologies 65 corundum 65 olivine 65 oxygen isotope 65 abundances 65 lavas 64 apatite 64 iron oxides 64 monazite 64 marine sediments 63 Fig. 1A 63 aragonite 63 basalts 63 perovskite 63 basaltic 63 uranium thorium 62 zircons 62 igneous rocks 62 oxygen isotopes 62 silicates 62 spinel 61 biogenic 61 carbonaceous 61 electron density 61 Zr 61 noble gases 61 foraminifera 60 spectral signature 60 igneous 60 magmas 60 Tellurium 60 silicate 60 inorganic compounds 60 spectral signatures 60 microfossils 60 MgO 60 biogeochemical 59 boron nitride 59 calcareous 59 anisotropy 59 physicochemical 59 samarium 59 nanoclusters 59 Supplementary Fig 59 copper oxides 59 manganese oxide 59 terrestrial ecosystems 59 diatoms 59 extrasolar 59 scheelite 59 methanogens 58 PGEs 58 metallicity 58 siliceous 58 sulfide minerals 58 nanosized 58 ALH# 58 porphyrin 58 loess 58 kaolinite 58 zeolites 58 clasts 58 anions 58 pathfinder elements 58 chemical composition 58 Archaean 58 metamorphic rocks 58 cuprates 58 tocopherol 58 hydroxyl 58 mineralogy 58 spherules 58 anion 58 metamorphism 57 lake sediments 57 prokaryotes 57 crystallinity 57 garnets 57 morphologically 57 solar nebula 57 γ 57 photochemistry 57 anionic 57 calcite 57 nitrogen atoms 57 sorption 57 stromatolites 57 Chromite 57 hydrothermal activity 57 faunal 57 igneous rock 57 magmatic 57 amino acid sequences 56 anomalism 56 paramagnetic