DOI: 10.1016/j.palaeo.2015.07.032
论文题名: The Pleistocene clastic sediments in the Divje babe I cave, Slovenia. Geochemical characterisation and provenance (Part 2)
作者: Skaberne D. ; Turk I. ; Turk J.
刊名: Palaeogeography, Palaeoclimatology, Palaeoecology
ISSN: 0031-0182
出版年: 2015
卷: 438 起始页码: 379
结束页码: 394
语种: 英语
英文关键词: Cave clastic sediments
; Geochemistry
; Palaeolithic site
; Pleistocene
; Provenance of sediments
; Slovenia
英文摘要: Different grain size fractions of clastic sediments (40-65, 0.5-3, and <0.5mm) from the Divje babe I cave were chemically analysed. In the chemical composition of the medium and fine fractions, four groups of variables were revealed: 1) MgO, LOI, TOT/C - dolomite, autochthonous terrigenous component; 2) P2O5, TOT/S, Mo, Sr, Cu, CaO, and so on - bones/apatite cement, biochemical chemical components; 3) SiO2, Al2O3, REE, Rb, Zr, K2O, Th, TiO2, Fe2O3, and so on - non-carbonate, allochthonous terrigenous components; and 4) U (Cd, MnO) - more mobile chemical components. Vertical distributions of P2O5, SiO2, and U in the fine fraction suggest five geochemical boundaries. The origin of P2O5 is attributed mainly to the cave bear. A negative correlation between the content of SiO2 and cavernously corroded clasts (indicating a humidity), indicates a dominant aeolian transport of non-carbonate material into the cave. Vertical distribution of U indicates the migration of U and its enrichment in the deeper parts of the sedimentary sequence. The mobilization of U was influenced by the duration of exposure of the sediments on the cave floor. The chemical characteristics of non-carbonate material indicate that source rocks probably belong to the Triassic volcanic, volcanogenic and terrigenous sedimentary rocks. © 2015 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/68804
Appears in Collections: 过去全球变化的重建
There are no files associated with this item.
作者单位: Geological Survey of Slovenia, Dimičeva ulica 14, Ljubljana, Slovenia; Lunačkova ulica 4, Ljubljana, Slovenia; Slovenian National Building and Civil Engineering Institute, Dimičeva ulica 12, Ljubljana, Slovenia
Recommended Citation:
Skaberne D.,Turk I.,Turk J.. The Pleistocene clastic sediments in the Divje babe I cave, Slovenia. Geochemical characterisation and provenance (Part 2)[J]. Palaeogeography, Palaeoclimatology, Palaeoecology,2015-01-01,438