New chronology for the southern Kalahari Group sediments with implications for sediment-cycle dynamics and early hominin occupation

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dc.contributor.authorMatmon, Aen_AU
dc.contributor.authorHidy, AJen_AU
dc.contributor.authorVainer, Sen_AU
dc.contributor.authorCrouvi, Oen_AU
dc.contributor.authorFink, Den_AU
dc.contributor.authorErel, Yen_AU
dc.contributor.authorASTER Teamen_AU
dc.contributor.authorArnold, Men_AU
dc.contributor.authorAumaître, Gen_AU
dc.contributor.authorBourlès, Den_AU
dc.contributor.authorKeddadouche, Ken_AU
dc.contributor.authorHorwitz, LKen_AU
dc.contributor.authorChazan, Men_AU
dc.date.accessioned2022-04-08T02:06:20Zen_AU
dc.date.available2022-04-08T02:06:20Zen_AU
dc.date.issued2017-01-20en_AU
dc.date.statistics2021-11-11en_AU
dc.description.abstractKalahari Group sediments accumulated in the Kalahari basin, which started forming during the breakup of Gondwana in the early Cretaceous. These sediments cover an extensive part of southern Africa and form a low-relief landscape. Current models assume that the Kalahari Group accumulated throughout the entire Cenozoic. However, chronology has been restricted to early–middle Cenozoic biostratigraphic correlations and to OSL dating of only the past ~ 300 ka. We present a new chronological framework that reveals a dynamic nature of sedimentation in the southern Kalahari. Cosmogenic burial ages obtained from a 55 m section of Kalahari Group sediments from the Mamatwan Mine, southern Kalahari, indicate that the majority of deposition at this location occurred rapidly at 1–1.2 Ma. This Pleistocene sequence overlies the Archaean basement, forming a significant hiatus that permits the possibility of many Phanerozoic cycles of deposition and erosion no longer preserved in the sedimentary record. Our data also establish the existence of a shallow early–middle Pleistocene water body that persisted for > 450 ka prior to this rapid period of deposition. Evidence from neighboring archeological excavations in southern Africa suggests an association of high-density hominin occupation with this water body. © University of Washingtonen_AU
dc.identifier.citationMatmon, A., Hidy, A. J., Vainer, S., Crouvi, O., Fink, D., Erel, Y., ASTER Team., Arnold, M., Aumaître, G., Bourlès, D., Keddadouche, K., Horwitz, L. K., & Chazan, M. (2015). New chronology for the southern Kalahari Group sediments with implications for sediment-cycle dynamics and early hominin occupation. Quaternary Research, 84(1), 118-132. doi:10.1016/j.yqres.2015.04.009en_AU
dc.identifier.issn1096-0287en_AU
dc.identifier.issue1en_AU
dc.identifier.journaltitleQuaternary Researchen_AU
dc.identifier.pagination118-132en_AU
dc.identifier.urihttps://doi.org/10.1016/j.yqres.2015.04.009en_AU
dc.identifier.urihttps://apo.ansto.gov.au/dspace/handle/10238/12967en_AU
dc.identifier.volume84en_AU
dc.language.isoenen_AU
dc.publisherCambridge University Pressen_AU
dc.subjectIsotope datingen_AU
dc.subjectSedimentsen_AU
dc.subjectArchaeologyen_AU
dc.subjectAfricaen_AU
dc.subjectCretaceous perioden_AU
dc.subjectPleistocene epochen_AU
dc.titleNew chronology for the southern Kalahari Group sediments with implications for sediment-cycle dynamics and early hominin occupationen_AU
dc.typeJournal Articleen_AU
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