Related by context. Frequent words. (Click for all words.) 61 radiocarbon dating 56 radiocarbon 55 Radiocarbon dating 52 microfossils 51 zircons 48 coprolites 47 sedimentary rock 47 isotopic composition 47 sediment cores 46 fossils 46 flint tools 46 lake sediments 46 excavations 46 marine sediments 45 Mesolithic 45 surficial 45 excavation 44 excavated 44 geological 44 sediments 44 Otzi 44 Geological mapping 44 #BC [003] 44 chert 44 geologic 43 stromatolites 43 lunar soil 43 pottery shards 43 oxygen isotopes 43 geological modeling 43 lava tubes 43 excavate 42 middens 42 archeological excavations 42 minable 42 geologic mapping 42 fossilized 42 dowsing 42 fossil 42 archaeologists 42 flints 41 fossilized bones 41 comparative genomics 41 dinosaur fossils 41 archaeological excavations 41 trackway 41 coring 41 lavas 40 magnetometer survey 40 Soil sampling 40 Soil samples 40 Quaternary 40 amphorae 40 archeologists 40 metallurgical testing 40 Geophysical Survey 40 Precambrian 40 trench sampling 40 hominins 40 palaeontologist 40 Paleocene 40 paleontological 40 ground penetrating radar 40 Bronze Age 40 sediment 40 archaeological finds 40 prehistoric 39 regolith 39 auger drilling 39 paleoanthropologist 39 paleo 39 Fieldwork 39 geologists 39 computational methods 39 semiconducting 39 Carboniferous 39 Lower Cretaceous 39 dated 39 Archeologists 39 Iron Age 39 sediment sampling 38 dolomite 38 discovery 38 archaeological discoveries 38 hydrothermal activity 38 drillings 38 dinosaur bones 38 archeological digs 38 experiments 38 Eocene 38 borings 38 foraminifera 38 dating 38 sediment samples 38 unearthed 38 metagenomics 38 limestone 38 Egyptian pyramids 38 basalt 38 geophysical 37 geophysical survey