{
  "abstract": "The Turkana Depression, located along the eastern branch of the East African Rift System, is investigated since decades to better understand dynamics of continental rifts and paleoenvironments of early hominins. However, no estimate of the volumes of sediment entering the system has been proposed, which limits our ability to accurately interpret the evolution of sedimentary environments and respective impacts of external forcings. In this study, we present a mass-balance analysis in order to quantify sediment production in the Omo River catchment and its contribution to the infill of the Turkana Depression since 27 Ma. We estimate that ~49 × 10 12 m 3 of rocks were eroded from the Omo River catchment, resulting in 27 to 34 × 10 12 m 3 of detrital sediments accumulating in the Turkana Depression, half of this volume was deposited after 3.8 Ma. This approach suggests that the Omo River was the major supplier of sediments to the Turkana Depression, with contributions ranging from 82% to 100%, in line with the dominant role of the modern river. Based on landscape evolution modelling, we complement the mass-balance analysis with a continuous reconstructed evolution through time of the volume of sediment delivered to the Turkana Depression by the Omo River catchment. Our simulations point to an increase in sediment flux during the Pliocene and the Quaternary, with volumes delivered to the Turkana Depression doubling during the last 3.8 Ma. This strong increase can be associated with Ethiopian Dome uplift, whereas precipitation changes appear to have had only a limited, secondary influence on sediment flux.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": null,
  "author_total": 6,
  "authors": [
    {
      "name": "Perrine Poirier"
    },
    {
      "name": "Alexis Nutz"
    },
    {
      "name": "Théa Ragon"
    },
    {
      "name": "Ghislain Gassier"
    },
    {
      "name": "Mathieu Schuster"
    },
    {
      "name": "Vincent Godard"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/dts543mqhd58y.bib",
  "cited_by": 0,
  "doi": "10.1016/j.jafrearsci.2026.106271",
  "fulltext_url": null,
  "id": "dts543mqhd58y",
  "issns": [
    "1464-343X",
    "1879-1956"
  ],
  "landing_url": "https://hal.science/hal-05850720v1",
  "language": "en",
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "hal",
      "0.sdu"
    ],
    [
      "hal",
      "1.sdu.stu"
    ],
    [
      "hal",
      "2.sdu.stu.gm"
    ],
    [
      "openalex",
      "1904|Geological formations and processes"
    ]
  ],
  "openalex": "W7167803938",
  "pdf_url": "https://hal.science/hal-05850720/document",
  "pmcid": null,
  "pmid": null,
  "published": "2026-11-03",
  "publisher": "Elsevier",
  "ris": "https://research.draconitic.com/paper/dts543mqhd58y.ris",
  "sources": [
    {
      "first_seen": "2026-11-04T12:20:53Z",
      "native_id": "hal-05850720",
      "source": "hal",
      "url": "https://hal.science/hal-05850720v1"
    }
  ],
  "subjects": [
    {
      "field": "earth",
      "origin": "hal:2.sdu.stu.gm",
      "subfield": "geology-geochemistry"
    }
  ],
  "title": "27 million years of sediment production in the Omo River catchment and contribution to the sedimentation in the Turkana Depression (EARS, Kenya/Ethiopia)",
  "title_text": "27 million years of sediment production in the Omo River catchment and contribution to the sedimentation in the Turkana Depression (EARS, Kenya/Ethiopia)",
  "type": "peer-reviewed",
  "updated_at": "2026-11-05T12:20:12Z",
  "url": "https://research.draconitic.com/paper/dts543mqhd58y",
  "venue": "Journal of African Earth Sciences",
  "versions": []
}