{
  "abstract": "The Lampa metarhyolites, exposed in the Tshela region and assigned to the Inga Formation (Seke-Banza Group, West Congo Supergroup, Democratic Republic of the Congo), form part of a probably Tonian felsic volcanic succession developed along the western margin of the Congo Craton. Although this succession is recognized at the regional scale, its internal petrographic variability and subsequent tectono-metamorphic evolution remain poorly constrained. This study integrates field observations, petrography, and in situ LA-ICP-MS U-Pb titanite geochronology to reassess the nature and evolution of these felsic volcanic rocks. Three relict volcanic facies are identified: matrix-rich metarhyolites, (pheno)crystal-rich metarhyolites, and distinct pyroclastic facies recognized here for the first time. These facies preserve primary volcanic characteristics despite variable degrees of sericitization, chloritization, recrystallization, and deformation associated with Pan-African reworking during the development of the West Congo Belt. Titanite grains from two of our samples yield a combined U-Pb age of 559 ± 15 Ma, interpreted as the timing of titanite crystallization during this orogenic event. These results provide new petrographic and geochronological constraints on the evolution of rocks derived from felsic magmatism in the Tshela region",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": null,
  "author_total": 10,
  "authors": [
    {
      "name": "Trésor Kawaya Hubert"
    },
    {
      "name": "Yann Waku Mpaka"
    },
    {
      "name": "Luc Tack"
    },
    {
      "name": "Marc Poujol"
    },
    {
      "name": "Mathias Potvin"
    },
    {
      "name": "Augustin Dekoninck"
    },
    {
      "name": "Albert Tienge Ongendangenda"
    },
    {
      "name": "Ridi Diakondua"
    },
    {
      "name": "Nicole Kitambala"
    },
    {
      "name": "Camille François"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/63at1jr0vdrtj.bib",
  "cited_by": 0,
  "doi": "10.70237/jafrisci.2026.v3.i11.04",
  "fulltext_url": null,
  "id": "63at1jr0vdrtj",
  "issns": [
    "3006-3760",
    "3107-0949"
  ],
  "landing_url": "https://insu.hal.science/insu-05780157v1",
  "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.gc"
    ],
    [
      "openalex",
      "1908|Geological and Geochemical Analysis"
    ]
  ],
  "openalex": "W7214539988",
  "pdf_url": "https://insu.hal.science/insu-05780157/document",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-06",
  "publisher": "Université de Kinshasa",
  "ris": "https://research.draconitic.com/paper/63at1jr0vdrtj.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:17:48Z",
      "native_id": "insu-05780157",
      "source": "hal",
      "url": "https://insu.hal.science/insu-05780157v1"
    }
  ],
  "subjects": [
    {
      "field": "earth",
      "origin": "hal:2.sdu.stu.gc",
      "subfield": "geology-geochemistry"
    }
  ],
  "title": "PETROGRAPHIC CHARACTERIZATION AND U-Pb DATING OF THE LAMPA METARHYOLITES FROM THE TSHELA AREA (Kongo Central Province, Democratic Republic of the Congo)",
  "title_text": "PETROGRAPHIC CHARACTERIZATION AND U-Pb DATING OF THE LAMPA METARHYOLITES FROM THE TSHELA AREA (Kongo Central Province, Democratic Republic of the Congo)",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T12:17:48Z",
  "url": "https://research.draconitic.com/paper/63at1jr0vdrtj",
  "venue": "Journal Africain des Sciences",
  "versions": []
}