Joshua Davies

Published

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2026

• BR Spiering, A Bissick, GP Halverson, C Musajo, A Whitehead, C Spruzen, A Boscaini, PR Liberty, JHFL Davies, BM Gibson, M Laflamme, FJ Hilgen (2026). Reassessment of the sub-basinal correlation of the Ediacaran Kuibis Subgroup (Nama Basin, Namibia) and implications for shallow marine chemostratigraphy. Precambrian Research 445, 108192.

• BR Spiering, A Boscaini, A Bissick, M Ovtcharova, M Zwarts, JHFL Davies, GP Halverson, FJ Hilgen (2026). Refined cyclostratigraphy of the siliciclastic Nudaus Formation and Nasep Member (Nama Group, Witputs sub-basin) reveals short-eccentricity forcing. Global and Planetary Change 265, 105622.

• WF McKenzie, HD Gibson, M Colpron, B Dyck, JHFL Davies, MG Perrot (2026). Reply to comment on "New U-Pb and Hf isotope detrital zircon constraints for the Kluane Schist, southwest Yukon, and their implications for the timing and style of Cretaceous Insular terranes accretion". Geosphere.

• BM Gibson, JHFL Davies, SA Darroch, A Bissick, A Boscaini, GP Halverson, FJ Hilgen, PR Liberty, JA Sorrentino, BR Spiering, P Vickers-Rich, M Laflamme (2026). Possible dickinsoniomorphs from the latest Ediacaran Nama Group, southern Namibia. Precambrian Research 433, 107981.

• MG Perrot, JWF Waldron, Y Luo, M Chiaradia, D Dahn, DG Pearson, JHFL Davies (2026). Linking detrital minerals to their source: the necessity of U-Pb-Hf data to untangle Laurentian and Gondwanan (Ganderian) sources. GSA Bulletin.

 

2025

• X Dai, M Ovtcharova, JHFL Davies, H Song, X Liu, Z Yuan, Y Cao, R Bai, D Chu, J Dal Corso, A Brayard (2025). Geochronology of the Early Triassic based on coupled Bayesian zircon eruption age and Bayesian age–depth models. Proceedings of the National Academy of Sciences 122(44), e2509247122.

• KF Kuiper, Z Toorenburgh, JF Wotzlaw, C Zeeden, FJ Sierro, JHFL Davies, D Sahy, DJ Condon, FJ Hilgen (2025). Revisiting the age of the Fish Canyon sanidine dating standard. Palaeogeography, Palaeoclimatology, Palaeoecology 682, 113421.

• J Carabin, F Gervais, AA Sappin, JHFL Davies, MG Perrot (2025). Insights into a synorogenic origin for REE-bearing carbonatites in the Central Metasedimentary Belt Boundary Zone of the Grenville Province. Canadian Journal of Earth Sciences 62(12), 1648–1670.

• RM Çörtük, ÖF Çelik, M Özkan, JHFL Davies, A Marzoli (2025). Two-stage leucocratic dyke generation in the Inner Tauride Ocean from Eastern Mediterranean Region in Central Türkiye. Lithos 518, 108307.

• WF McKenzie, HD Gibson, M Colpron, B Dyck, JHFL Davies, MG Perrot (2025). New detrital zircon U-Pb and Hf isotope constraints for the Kluane Schist, southwestern Yukon, Canada, and their implications for Cretaceous Insular terrane accretion. Geosphere.

• S Timmerman, T Stachel, I Chinn, F Nestola, D Novella, JHFL Davies, DG Pearson (2025). The effect of inclusion-fluid fractionation on different isotopic systems used to date diamonds. Earth and Planetary Science Letters.

• BM Saumur, C-P Folkesson, DR Skipton, JHFL Davies, N Wodicka, ST Johnston (2025). Defining the Mary River Group: Meso- and Neoarchean supracrustal rocks of the Rae Craton, northern Baffin Island, Nunavut, Canada. Geochemistry, Geophysics, Geosystems.

• FT Bowyer, F Messori, R Wood, U Linnemann, E Rojo-Perez, M Zieger-Hofmann, J Zieger, J Ndeunyema, M Shipanga, B Mataboge, D Condon, CV Rose, C-I Uahengo, SP Gaynor, IA Müller, G Geyer, T Vennemann, JHFL Davies, M Ovtcharova (2025). Foundational uncertainties in terminal Ediacaran chronostratigraphy revealed by chemostratigraphy and high-precision zircon U-Pb geochronology of the Nama Group, Namibia. Earth-Science Reviews.

• A Tremblay, MG Perrot, JHFL Davies (2025). Geochronology of the southern Québec Dunnage zone, Canadian Appalachians – new U-Pb zircon data, synthesis and implications for the paleogeography and tectonic setting of the Taconian orogeny. Gondwana Research.

• D Szymanowski, J-F Wotzlaw, M Ovtcharova, B Schoene, U Schaltegger, MD Schmitz, C Chelle-Michou, KR Chamberlain, D Condon, JL Crowley, JHFL Davies, MP Eddy, SP Gaynor, RB Ickert, A Käßner, MT Mohr, AN Paul, J Ramezani, S Tapster, M Tichomirowa, A von Quadt, CJ Wall (2025). Interlaboratory reproducibility of ID-TIMS U–Pb geochronology evaluated with a pre-spiked natural zircon solution. Geochronology 7, 409–425.

• A Boscaini, JHFL Davies, MG Perrot, R Sassi, C Mazzoli, A De Min, C Morelli, E Kustatscher, A Marzoli (2025). Early Permian post-collisional magmatism induced by extensive removal of the Variscan lithospheric mantle. Contributions to Mineralogy and Petrology.

• JR Reimink, R Beckman, E Schoonover, M Lloyd, J Garber, JHFL Davies, A Cerminaro, MG Perrot, AJ Smye (2025). Discordance dating: a new approach for dating sedimentary alteration events. Geochronology.

• J Lockie, A Ielpi, SJ Pehrsson, JHFL Davies, BJ Fischer (2025). Detrital zircon geochronology of the Paleoproterozoic Nonacho Basin (NWT, Canada): a record of post-collisional collapse amid supercontinent aggregation. Precambrian Research.

• J Lockie, A Ielpi, R Canam, MG Perrot, JHFL Davies, L Ootes (2025). Orogenic unroofing of the Taltson and Thelon orogens depicted through detrital zircon geochronology of the Sosan Group, Great Slave Lake Supergroup (Northwest Territories, Canada). Precambrian Research.

• BM Gibson, I Stengel, Z Nghishidulu, PR Liberty, A Bissick, A Boscaini, JHFL Davies, GP Halverson, FJ Hilgen, B Spiering, P Vickers-Rich, M Laflamme (2025). New Swartpuntia occurrence found within the Aar Member. Gondwana Research 138, 186–191.

 

2024

• D Popov, R Spikings, AN Paul, M Ovtcharova, M Chiaradia, M Kutzschbach, A Ulianov, G O'Sullivan, D Chew, K Kouzmanov, E Badenszki, JS Daly, JHFL Davies (2024). Excess 40Ar in alkali feldspar and 206,207Pb in apatite caused by fluid-induced recrystallisation in a semi-closed environment in Proterozoic (meta)granites of the Mt Isa Inlier, NE Australia. Geosciences.

• RM Çörtük, ÖF Çelik, M Özkan, JHFL Davies, A Marzoli (2024). Timing of the subduction initiation and ophiolite emplacement of the inner Tauride Ocean: insight from the Pınarbaşı ophiolite in Central Türkiye. Lithos 488–489.

• RM Çörtük, ÖF Çelik, M Özkan, JHFL Davies, A Marzoli, SC Sherlock, AM Halton (2024). Emplacement history of the Central Anatolian Ophiolites: insights from the Felahiye Ophiolite in Central Türkiye. International Geology Review.

• ML Lantink, JHFL Davies, R Hennekam, DMcB Martin, P Mason, G-J Reichart, FJ Hilgen (2024). Towards an astrochronological framework for the lower Paleoproterozoic Kuruman and Brockman Iron Formations. South African Journal of Geology.

• EJ Thiessen, JHFL Davies, B Dyck, MG Perrot, E Martel (2024). Detrital zircon U-Pb+Hf data supports 2.1 Ga extensional and 2.0 Ga syn-orogenic basin in southwest Rae craton during early Nuna assembly. Precambrian Research.

• JA Cutts, B Dyck, MG Perrot, JHFL Davies, AM Osinchuk, D Šilerová, RA Stern, M Chiaradia, R Canam (2024). A contiguous Taltson-Thelon margin revisited. Geochemistry, Geophysics, Geosystems.

• D Condon, B Schoene, M Schmitz, U Schaltegger, R Ickert, Y Amelin, et al., JHFL Davies, et al. (2024). Recommendations for the reporting and interpretation of isotope dilution U-Pb geochronological information. GSA Bulletin.

• SD Buryak, AV Reyes, CK West, BJL Jensen, SA DuFrane, JHFL Davies, Y Luo, JM Galloway, PA Siver, JA Westgate, JR Reimink, DG Pearson, AP Wolfe (2024). Tephra zircon U-Pb geochronology of kimberlite maar sedimentary fills in subarctic Canada: implications for Eocene paleoclimate and Late Cretaceous paleogeography. GSA Bulletin.

• Q Zhang, S Timmerman, T Stachel, I Chinn, RA Stern, JHFL Davies, F Nestola, R Luth, DG Pearson (2024). Sublithospheric diamonds extend Paleoproterozoic record of cold deep subduction into the lower mantle. Earth and Planetary Science Letters.

• P Miloski, S Dare, C-E Morisset, JHFL Davies, MG Perrot (2024). Petrogenesis of oxide-apatite mineralization associated with Proterozoic anorthosite massifs at Lac Mirepoix, Quebec, Canada: a multi-stage model of evolution for Fe-Ti-P mineralization in the Central Grenville Province. Mineralium Deposita.

 

2023

• SP Gaynor, JHFL Davies, U Schaltegger (2023). High precision geochronology of LIP intrusions: records of magma-sediment interaction. Elements.

• FM Deegan, S Callegaro, JHFL Davies, HH Svensen (2023). Driving global change one LIP at a time. Elements.

• BR Spiering, A Bissick, SAF Darroch, JHFL Davies, BM Gibson, GP Halverson, M Laflamme, FJ Hilgen (2023). Initial cyclostratigraphy of the middle Nama Group (Schwarzrand Subgroup) in southern Namibia. Precambrian Research.

• P Miloski, S Dare, C-E Morisset, JHFL Davies, MG Perrot (2023). Petrogenesis of Fe-Ti-P mineralization associated with Proterozoic anorthosite massifs at Lac à l'Orignal, Quebec, Canada: insights from oxide and apatite trace-element geochemistry. Ore Geology Reviews.

• ÖF Çelik, RM Çörtük, M Özkan, JHFL Davies, A Marzoli, SC Sherlock, A Risplendente, AM Halton, MG Perrot (2023). New evidence for the presence of the Inner Tauride Ocean: lithological, geochronological and P-T correlations with the Tavşanlı and Afyon zones of central Anatolia (Türkiye). Lithos 462–463.

• S Timmerman, T Stachel, JM Koornneef, KV Smit, R Harlou, GM Nowell, AR Thomson, SC Kohn, JHFL Davies, GR Davies, MY Krebs, Q Zhang, SEM Milne, JW Harris, F Kaminsky, D Zedgenizov, G Bulanova, CB Smith, IC Neto, FV Silveira, AD Burnham, F Nestola, SB Shirey, MJ Walter, A Steele, DG Pearson (2023). Sublithospheric diamonds and the supercontinent cycle. Nature.

• X Dai, JHFL Davies, Z Yuan, A Brayard, M Ovtcharova, G Xu, X Liu, CPA Smith, CE Schweitzer, M Li, MG Perrot, S Jiang, L Miao, Y Cao, J Yan, R Bai, F Wang, W Guo, H Song, L Tian, J Dal Corso, Y Liu, D Chu, H Song (2023). A Mesozoic fossil lagerstätte from 250.8 million years ago shows a modern-type marine ecosystem. Science 379, 567–572.

• F Dufour, JHFL Davies, JW Greenman, T Skulski, GP Halverson, R Stevenson (2023). New U-Pb CA-ID-TIMS zircon ages implicate the Franklin LIP as the proximal trigger for the Sturtian Snowball Earth event. Earth and Planetary Science Letters.

• JR Reimink, JHFL Davies, JF Moyen, DG Pearson (2023). A whole-lithosphere view of continental growth. Geochemical Perspectives Letters.

• MH Senger, JHFL Davies, M Ovtcharova, N Beukes, A Gumsley, SP Gaynor, A Ulianov, R Ngobeli, U Schaltegger (2023). Improving the chronostratigraphic framework of the Transvaal Supergroup (South Africa) through in-situ and high-precision U-Pb geochronology. Precambrian Research.

• ML Lantink, WK Lenstra, JHFL Davies, R Hennekam, DMcB Martin, PRD Mason, G-J Reichart, CP Slomp, FJ Hilgen (2023). Precessional pacing of early Proterozoic redox cycles. Earth and Planetary Science Letters.

• BC Rocha, SP Gaynor, VA Janasi, JHFL Davies, LM Florisbal, BL Waichel, U Schaltegger (2023). New U-Pb baddeleyite ID-TIMS ages from the intrusive high-Ti-Sr rocks of the Southern Paraná LIP, Brazil: implications for correlations with environmental disturbances during the Early Cretaceous. Results in Geochemistry.

 

2022

• ML Lantink, WK Lenstra, JHFL Davies, R Hennekam, DB Martin, PRD Mason, G-J Reichart, M Ovtcharova, CP Slomp, FJ Hilgen (2022). Precession as the pacemaker of early Earth's oxygenation. Proceedings of the National Academy of Sciences.

• GP Halverson, C Shen, JHFL Davies, L Wu (2022). A Bayesian approach to inferring depositional ages applied to a Late Tonian reference section in Svalbard. Frontiers in Earth Science.

• C Shen, M Schmitz, P Johnson, JHFL Davies, GP Halverson (2022). U-Pb geochronology and cyclostratigraphy of the middle Ediacaran upper Jibalah Group, eastern Arabian Shield. Precambrian Research.

• SD Buryak, AV Reyes, BJL Jensen, JHFL Davies, JA Westgate, A DuFrane, Y Luo, DG Froese, DG Pearson, JA Benowitz (2022). Laser-ablation ICP-MS zircon U-Pb ages for key Pliocene-Pleistocene tephra beds in unglaciated Yukon and Alaska. Quaternary Geochronology 101398.

• K Papapavlou, A Moukhsil, A Poirier, JHFL Davies (2022). The build-up of the Laurentian margin through the U-Pb-Hf record of detrital zircon grains: new insights from the Lac-Saint-Jean region (Central Grenville Province, QC, Canada). Geological Magazine.

 

2021

• A Curry, SP Gaynor, JHFL Davies, M Ovtcharova, G Simpson, L Caricchi (2021). Timescales and thermal evolution of large silicic magma reservoirs during an ignimbrite flare-up: perspectives from zircon. Contributions to Mineralogy and Petrology.

• U Schaltegger, M Ovtcharova, SP Gaynor, B Schoene, J-F Wotzlaw, JHFL Davies, F Farina, ND Greber, D Szymanowski, C Chelle-Michou (2021). Long-term repeatability and interlaboratory reproducibility of high-precision ID-TIMS U–Pb geochronology. Journal of Analytical Atomic Spectrometry.

• JHFL Davies, A Marzoli, H Bertrand, N Youbi, M Ernesto, N Greber, M Ackerson, G Simpson, AS Bouvier, L Baumgartner, T Pettke, F Farina, HV Ahrenstedt, U Schaltegger (2021). Zircon petrochronology in large igneous provinces reveals upper crustal contamination processes: new U-Pb ages, Hf and O isotopes and trace elements from the Central Atlantic magmatic province (CAMP). Contributions to Mineralogy and Petrology.

• JR Reimink, JHFL Davies, A Ielpi (2021). Global zircon analysis records the Neoarchean rise of continents. Earth and Planetary Science Letters.

• S Lindström, S Callegaro, JHFL Davies, C Tegner, B van de Schootbrugge, G Pedersen, N Youbi, H Sanei, A Marzoli (2021). Tracing volcanic emissions from the Central Atlantic Magmatic Province in the sedimentary record. Earth-Science Reviews.

• E Heerwagen, JHFL Davies, S Schmidt, A Ulianov, R Martini (2021). New insights into the paleoposition of the Antimonio depositional system (Sonora, Mexico) from geochronology combined with nonparametric and multivariate analysis. Journal of South American Earth Sciences.

• M Domeier, E Font, N Youbi, JHFL Davies, S Nemkin, R Van der Voo, MG Perrot, M Benabbou, M Ahmed, T Boumehdi, T Torsvik (2021). On the Early Permian shape of Pangea from paleomagnetism at its core. Gondwana Research.

 

2020

• ND Greber, JHFL Davies, SP Gaynor, F Jourdan, H Bertrand, U Schaltegger (2020). New high precision U-Pb ages and Hf isotope data from the Karoo large igneous province; implications for pulsed magmatism and early Toarcian environmental perturbations. Results in Geochemistry.

• JR Reimink, JHFL Davies, AM Bauer, T Chacko (2020). A comparison between zircons from the Acasta Gneiss Complex and the Jack Hills region. Earth and Planetary Science Letters 531, 115975.

• A Boscaini, A Marzoli, JHFL Davies, M Chiaradia, H Bertrand, A Zanetti, D Visonà, A De Min, F Jourdan (2020). Permian post-collisional basic magmatism from Corsica to the Southeastern Alps. Lithos 376–377.

• D Popov, R Spikings, S Scaillet, G O'Sullivan, D Chew, E Badenszki, JS Daly, T Razakamanana, JHFL Davies (2020). Diffusion and fluid interaction in Itrongay pegmatite (Madagascar): evidence from in situ 40Ar/39Ar dating of gem-quality alkali feldspar and U-Pb dating of protogenetic apatite inclusions. Chemical Geology.

• J Pohlner, AK Schmitt, KR Chamberlain, JHFL Davies, A Hildenbrand, G Austermann (2020). Baddeleyite microtextures and U-Pb discordance: insights from the Spread Eagle Intrusive Complex and Cape St. Mary's sills, Newfoundland, Canada. Geochronology 2(2), 187–208.

• BC Rocha, JHFL Davies, VA Janasi, U Schaltegger, AJR Nardy, ND Greber, ACF Luchetti, LA Polo (2020). Rapid eruption of silicic magmas from the Paraná magmatic province (Brazil) did not trigger the Valanginian event. Geology.

• A Da Silva, M Sinnesael, P Claeys, JHFL Davies, N de Winter, L Percival, U Schaltegger, D De Vleeschouwer (2020). Anchoring the Late Devonian mass extinction in absolute time by integrating climatic controls and radio-isotopic dating. Scientific Reports 10, 12940.

 

2019

• P Widmann, JHFL Davies, U Schaltegger (2019). Attempts to calibrate chemical abrasion: effects on zircon crystal structure, chemical composition and U-Pb age. Chemical Geology 511, 1–10.

• A Marzoli, H Bertrand, N Youbi, S Callegaro, R Merle, L Reisberg, M Chiaradia, S Brownlee, F Jourdan, A Zanetti, JHFL Davies, T Cuppone, A Mahmoudi, F Medina, P Renne, G Bellieni, S Crivellari, H Hachimi, M Bensalah, C Meyzen, C Tegner (2019). The Central Atlantic magmatic province (CAMP) in Morocco. Journal of Petrology 60(5), 945–996.

• ML Lantink, JHFL Davies, P Mason, U Schaltegger, FJ Hilgen (2019). Climate control on banded iron formations linked to orbital eccentricity. Nature Geoscience 12(5), 369–374.

 

2018

• A Marzoli, S Callegaro, J Dal Corso, JHFL Davies, M Chiaradia, N Youbi, H Bertrand, L Reisberg, R Merle, F Jourdan (2018). The Central Atlantic magmatic province (CAMP): a review. In: The Late Triassic World, Springer, 91–125.

• L Percival, JHFL Davies, U Schaltegger, D De Vleeschouwer, A Da Silva, K Föllmi (2018). Precisely dating the Frasnian–Famennian boundary: implications for the cause of the Late Devonian mass extinction. Scientific Reports 8.

• JHFL Davies, R Stern, L Heaman, D Moser, E Walton, T Vennemann (2018). Evaluating baddeleyite oxygen isotope analysis by secondary ion mass spectrometry (SIMS). Chemical Geology 479, 113–122.

• F Farina, A Dini, JHFL Davies, M Ovtcharova, ND Greber, AS Bouvier, L Baumgartner, A Ulianov, U Schaltegger (2018). Zircon petrochronology reveals the timescale and mechanism of anatectic magma formation. Earth and Planetary Science Letters 495, 213–223.

• JHFL Davies, TE Sheldrake, JR Reimink, JF Wotzlaw, C Moeck, A Finlay (2018). Investigating complex isochron data using mixture models. Geochemistry, Geophysics, Geosystems 19.

 

2017

• U Schaltegger, JHFL Davies (2017). Petrochronology of zircon and baddeleyite in igneous rocks: reconstructing magmatic processes at high temporal resolution. Reviews in Mineralogy and Geochemistry 83(1), 297–328.

• JHFL Davies, A Marzoli, H Bertrand, N Youbi, M Ernesto, U Schaltegger (2017). End-Triassic mass extinction started by intrusive CAMP activity. Nature Communications 8, 15596.

• A Marzoli, JHFL Davies, N Youbi, R Merle, J Dal Corso, D Dunkley, A Fioretti, G Bellieni, F Medina, J Wotzlaw, G McHone, E Font, M Bensalah (2017). Proterozoic to Mesozoic evolution of North-West Africa and Peri-Gondwana microplates: detrital zircon ages from Morocco and Canada. Lithos 278–281, 229–239.

• S Callegaro, A Marzoli, H Bertrand, J Blichert-Toft, L Reisberg, G Cavazzini, F Jourdan, JHFL Davies, L Parisio, R Bouchet, A Paul, U Schaltegger, M Chiaradia (2017). Geochemical constraints provided by the Freetown Layered Complex (Sierra Leone) on the origin of high-Ti tholeiitic CAMP magmas. Journal of Petrology 58(9), 1811–1840.

 

2016

• JR Reimink, JHFL Davies, J Waldron, X Rojas (2016). Dealing with discordance: a novel approach for analysing U–Pb detrital zircon datasets. Journal of the Geological Society, London 173(4), 577–585.

• F-X d'Abzac, JHFL Davies, J-F Wotzlaw, U Schaltegger (2016). Hf isotope analysis of small zircon and baddeleyite grains by conventional Multi Collector-Inductively Coupled Plasma-Mass Spectrometry. Chemical Geology 433, 12–23.

• JR Reimink, JHFL Davies, T Chacko, R Stern, L Heaman, C Sarkar, U Schaltegger, R Creaser, DG Pearson (2016). No evidence for Hadean continental crust within Earth's oldest evolved rock unit. Nature Geoscience 9(10), 777–780.

 

2015

• JHFL Davies, R Stern, L Heaman, X Rojas, E Walton (2015). Resolving oxygen isotopic disturbance in zircon: a case study from the low δ18O Scourie dikes, NW Scotland. American Mineralogist 100(8–9), 1952–1966.

 

2014

• JHFL Davies, J-F Wotzlaw, AP Wolfe, LM Heaman (2014). Assessing the age of the Late Cretaceous Danek Bonebed with U-Pb geochronology. Canadian Journal of Earth Sciences 51, 982–986.

• HSR Hughes, I McDonald, KM Goodenough, TJR Ciborowski, AC Kerr, JHFL Davies, D Selby (2014). Enriched lithospheric mantle keel below the Scottish margin of the North Atlantic Craton: evidence from the Paleoproterozoic Scourie dyke swarm and mantle xenoliths. Precambrian Research 250, 97–126.

• JHFL Davies, LM Heaman (2014). New U-Pb baddeleyite and zircon ages for the Scourie dyke swarm: a long-lived large igneous province with implications for the Paleoproterozoic evolution of NW Scotland. Precambrian Research 249, 180–198.

 

Popular science (The Conversation)

 

2022

• J Davies, M Lantink (2022). Our moon has been slowly drifting away from Earth over the past 2.5 billion years. The Conversation.

• J Davies, M Lantink (2022). Notre Lune s'est lentement éloignée de la Terre au cours des dernières 2,5 milliards d'années. La Conversation.

 

2021

• J Davies, B Rocha, N Greber (2021). Huge volcanic eruption didn't cause climate change and mass extinction 140 million years ago. The Conversation.

 

2020

• J Davies, J Reimink (2020). Earth's rock-solid connections between Canada and Australia contain clues about the origin of life. The Conversation.

• J Davies, J Reimink (2020). Des comparaisons rocheuses entre le Canada et l'Australie offrent des indices sur l'origine de la vie. La Conversation.

 

2019

• J Davies, M Lantink (2019). Rock-solid archives record variations in the Earth's orbit. The Conversation.