Lepre's Research

Lepre, C. J., Chang, C. Y., Yazzie, O. M., 2024. Paleoclimate Controls on West African Dust Inferred from Rb/Sr and Si/Al of Sediments in an Eastern Equatorial Atlantic Marine Core. Atmosphere 15, 902. https://www.mdpi.com/2073-4433/15/8/902

Lepre, C. J., Yazzie, O. M., Klaus, B. R., 2024. Visible-Light Spectroscopy and Rock Magnetic Analyses of Iron Oxides in Mixed-Mineral Assemblages. Crystals 14, 644. https://www.mdpi.com/2073-4352/14/7/644

Lepre, C. J., 2023. Identifying Temperature and Moisture Controls on Fe Oxide Origins. Geophysical Research Letters 50, e2023GL102761. https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2023GL102761

Lepre, C. J., Quinn, R. L., 2022. Aridification and orbital forcing of eastern African climate during the Plio-Pleistocene. Global and Planetary Change 208, 103684. https://linkinghub.elsevier.com/retrieve/pii/S0921818121002691

Rasmussen, C., Irmis, R. B., Mundil, R., Schaller, M. F., Geissman, J., Parker, W. G., Lepre, C. J., Olsen, P. E., 2022. A geochronologically-constrained stable isotope record of the Upper Triassic Sonsela Member (Chinle Formation) at Petrified Forest National Park (Arizona, USA): Testing for paleoenvironmental linkages with biotic change and the Manicouagan impact. Palaeogeography, Palaeoclimatology, Palaeoecology 601, 111060. https://linkinghub.elsevier.com/retrieve/pii/S0031018222002309

Haque, Z., Geissman, J. W., Irmis, R. B., Olsen, P. E., Lepre, C., Buhedma, H., Mundil, R., Parker, W. G., Rasmussen, C., Gehrels, G. E., 2021. Magnetostratigraphy of the Triassic Moenkopi Formation From the Continuous Cores Recovered in Colorado Plateau Coring Project Phase 1 (CPCP‐1), Petrified Forest National Park, Arizona, USA: Correlation of the Early to Middle Triassic Strata and Biota in Colorado Plateau and Its Environs. JGR Solid Earth 126, e2021JB021899. https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2021JB021899

Lepre, C. J., Olsen, P. E., 2021. Hematite reconstruction of Late Triassic hydroclimate over the Colorado Plateau. Proc. Natl. Acad. Sci. U.S.A. 118, e2004343118. https://pnas.org/doi/full/10.1073/pnas.2004343118

Liu, T., Lepre, C. J., Hemming, S. R., Broecker, W. S., 2021. Rock varnish record of the African Humid Period in the Lake Turkana basin of East Africa. The Holocene 31, 1239–1249. https://journals.sagepub.com/doi/10.1177/09596836211011655

Quinn, R. L., Lewis, J., Brugal, J.-P., Lepre, C. J., Trifonov, A., Harmand, S., 2021. Influences of dietary niche expansion and Pliocene environmental changes on the origins of stone tool making. Palaeogeography, Palaeoclimatology, Palaeoecology 562, 110074. https://linkinghub.elsevier.com/retrieve/pii/S0031018220305228

Quinn, R. L., Lepre, C. J., 2021. Contracting eastern African C4 grasslands during the extinction of Paranthropus boisei. Sci Rep 11, 7164. https://www.nature.com/articles/s41598-021-86642-z

Rasmussen, C., Mundil, R., Irmis, R. B., Geisler, D., Gehrels, G. E., Olsen, P. E., Kent, D. V., Lepre, C., Kinney, S. T., Geissman, J. W., Parker, W. G., 2021. U-Pb zircon geochronology and depositional age models for the Upper Triassic Chinle Formation (Petrified Forest National Park, Arizona, USA): Implications for Late Triassic paleoecological and paleoenvironmental change. Geological Society of America Bulletin 133, 539–558. https://pubs.geoscienceworld.org/gsa/gsabulletin/article/133/3-4/539/588168/U-Pb-zircon-geochronology-and-depositional-age

Gehrels, G., Giesler, D., Olsen, P., Kent, D., Marsh, A., Parker, W., Rasmussen, C., Mundil, R., Irmis, R., Geissman, J., Lepre, C., 2020. LA-ICPMS U–Pb geochronology of detrital zircon grains from the Coconino, Moenkopi, and Chinle formations in the Petrified Forest National Park (Arizona). Geochronology 2, 257–282. https://gchron.copernicus.org/articles/2/257/2020/

Quinn, R. L., Lepre, C. J., 2020. Revisiting the pedogenic carbonate isotopes and paleoenvironmental interpretation of Kanapoi. Journal of Human Evolution 140, 102549. https://linkinghub.elsevier.com/retrieve/pii/S0047248418303932

Kent, D. V., Olsen, P. E., Lepre, C., Rasmussen, C., Mundil, R., Gehrels, G. E., Giesler, D., Irmis, R. B., Geissman, J. W., Parker, W. G., 2019. Magnetochronology of the Entire Chinle Formation (Norian Age) in a Scientific Drill Core from Petrified Forest National Park (Arizona, USA) and Implications for Regional and Global Correlations in the Late Triassic. Geochemistry, Geophysics, Geosystems 20, 4654–4664. https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2019GC008474

Lepre, C. J., 2019. Constraints on Fe‐Oxide Formation in Monsoonal Vertisols of Pliocene Kenya Using Rock Magnetism and Spectroscopy. Geochemistry, Geophysics, Geosystems 20, 4998–5013. https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2019GC008276

Mana, S., Hemming, S., Kent, D. V., Lepre, C. J., 2019. Temporal and Stratigraphic Framework for Paleoanthropology Sites Within East-Central Area 130, Koobi Fora, Kenya. Front. Earth Sci. 7, 230. https://www.frontiersin.org/article/10.3389/feart.2019.00230/full

Kent, D. V., Olsen, P. E., Rasmussen, C., Lepre, C., Mundil, R., Irmis, R. B., Gehrels, G. E., Giesler, D., Geissman, J. W., Parker, W. G., 2018. Empirical evidence for stability of the 405-kiloyear Jupiter–Venus eccentricity cycle over hundreds of millions of years. Proceedings of the National Academy of Sciences 115, 6153–6158. https://pnas.org/doi/full/10.1073/pnas.1800891115

Olsen, P. E., Geissman, J. W., Kent, D. V., Gehrels, G. E., Mundil, R., Irmis, R. B., Lepre, C., Rasmussen, C., Giesler, D., Parker, W. G., Zakharova, N., Kürschner, W. M., Miller, C., Baranyi, V., Schaller, M. F., Whiteside, J. H., Schnurrenberger, D., Noren, A., Brady Shannon, K., O’Grady, R., Colbert, M. W., Maisano, J., Edey, D., Kinney, S. T., Molina-Garza, R., Bachman, G. H., Sha, J., the CPCD team, 2018. Colorado Plateau Coring Project, Phase I (CPCP-I): a continuously cored, globally exportable chronology of Triassic continental environmental change from western North America. Scientific Drilling 24, 15–40. https://sd.copernicus.org/articles/24/15/2018/

Lepre, C. J., 2017. Crevasse‐splay and associated depositional environments of the hominin‐bearing lower Okote Member, Koobi Fora Formation (Plio‐Pleistocene), Kenya. The Depositional Record 3, 161–186. https://onlinelibrary.wiley.com/doi/10.1002/dep2.31

Harmand, S., Lewis, J. E., Feibel, C. S., Lepre, C. J., Prat, S., Lenoble, A., Boës, X., Quinn, R. L., Brenet, M., Arroyo, A., Taylor, N., Clément, S., Daver, G., Brugal, J.-P., Leakey, L., Mortlock, R. A., Wright, J. D., Lokorodi, S., Kirwa, C., Kent, D. V., Roche, H., 2015. 3.3-million-year-old stone tools from Lomekwi 3, West Turkana, Kenya. Nature 521, 310–315. https://www.nature.com/articles/nature14464

Lepre, C. J., Kent, D. V., 2015. Chronostratigraphy of KNM-ER 3733 and other Area 104 hominins from Koobi Fora. Journal of Human Evolution 86, 99–111. https://linkinghub.elsevier.com/retrieve/pii/S0047248415001621

Lepre, C. J., 2014. Early Pleistocene lake formation and hominin origins in the Turkana–Omo rift. Quaternary Science Reviews 102, 181–191. https://linkinghub.elsevier.com/retrieve/pii/S0277379114003321

Quinn, R. L., Lepre, C. J., Feibel, C. S., Wright, J. D., Mortlock, R. A., Harmand, S., Brugal, J.-P., Roche, H., 2013. Pedogenic carbonate stable isotopic evidence for wooded habitat preference of early Pleistocene tool makers in the Turkana Basin. Journal of Human Evolution 65, 65–78. https://linkinghub.elsevier.com/retrieve/pii/S0047248413000997

Indriati, E., Swisher, C. C., Lepre, C., Quinn, R. L., Suriyanto, R. A., Hascaryo, A. T., Grün, R., Feibel, C. S., Pobiner, B. L., Aubert, M., Lees, W., Antón, S. C., 2011. The Age of the 20 Meter Solo River Terrace, Java, Indonesia and the Survival of Homo erectus in Asia. PLoS ONE 6, e21562. https://dx.plos.org/10.1371/journal.pone.0021562

Lepre, C. J., Roche, H., Kent, D. V., Harmand, S., Quinn, R. L., Brugal, J.-P., Texier, P.-J., Lenoble, A., Feibel, C. S., 2011. An earlier origin for the Acheulian. Nature 477, 82–85. https://www.nature.com/articles/nature10372

Lepre, C. J., Kent, D. V., 2010. New magnetostratigraphy for the Olduvai Subchron in the Koobi Fora Formation, northwest Kenya, with implications for early Homo. Earth and Planetary Science Letters 290, 362–374. https://linkinghub.elsevier.com/retrieve/pii/S0012821X09007559

Feibel, C. S., Lepre, C. J., Quinn, R. L., 2009. Stratigraphy, correlation, and age estimates for fossils from Area 123, Koobi Fora. Journal of Human Evolution 57, 112–122. https://linkinghub.elsevier.com/retrieve/pii/S0047248409000852

 Lepre, C. J., Quinn, R. L., Joordens, J. C. A., Swisher, C. C., Feibel, C. S., 2007. Plio-Pleistocene facies environments from the KBS Member, Koobi Fora Formation: implications for climate controls on the development of lake-margin hominin habitats in the northeast Turkana Basin (northwest Kenya). Journal of Human Evolution 53, 504–514. https://linkinghub.elsevier.com/retrieve/pii/S0047248407001510

Quinn, R. L., Lepre, C. J., Wright, J. D., Feibel, C. S., 2007. Paleogeographic variations of pedogenic carbonate δ13C values from Koobi Fora, Kenya: implications for floral compositions of Plio-Pleistocene hominin environments. Journal of Human Evolution 53, 560–573. https://linkinghub.elsevier.com/retrieve/pii/S0047248407001443