DOI: 10.1016/j.quascirev.2018.01.012
Scopus记录号: 2-s2.0-85041479306
论文题名: Cover beds older than the mid-pleistocene revolution and the provenance of their eolian components, La Sal Mountains, Utah, USA
作者: Krautz J. ; Gärtner A. ; Hofmann M. ; Linnemann U. ; Kleber A.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2018
卷: 185 起始页码: 1
结束页码: 8
语种: 英语
英文关键词: Colorado plateau
; Eolian matter
; Pleistocene
; Provenance analysis
; Sedimentology
; U-Pb dating
Scopus关键词: Binary alloys
; Geochronology
; Lead
; Sedimentology
; Uranium deposits
; Colorado Plateau
; Eolian matter
; Pleistocene
; Provenance analysis
; U-Pb dating
; Lead alloys
英文摘要: We used uranium-lead (U-Pb) dating of zircons from a tephra layer deposited in the La Sal Mountains to assign an age of more than c. 1.3 Ma to underlying loess-mixed slope deposits (cover beds) and paleosols developed therein. For the first time, we show that properties of cover beds and soils before the Mid-Pleistocene Revolution were similar to those formed after the revolution. However, the deepest exposed carbonate-enriched horizon is much farther developed than younger ones, indicating that there was a period of enrichment by far exceeding intensities of younger calcic horizons some time before the revolution, possibly in Neogene times. Remarkable differences between age distributions of detrital zircons (DZ) within the cover beds allow reconstructing the regional provenance of mixed eolian matter with high accuracy: we were able to trace particular cover beds back to areas with outcropping Permian and Upper Cretaceous rocks. © 2018 Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/112256
Appears in Collections: 气候减缓与适应
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作者单位: Geographisches Institut, Technische Universität Dresden, Helmholtzstr. 10, Dresden, 01069, Germany; Senckenberg Naturhistorische Sammlungen Dresden, Museum für Mineralogie und Geologie, Sektion Geochronologie, Königsbrücker Landstraße 159, Dresden, 01109, Germany
Recommended Citation:
Krautz J.,Gärtner A.,Hofmann M.,et al. Cover beds older than the mid-pleistocene revolution and the provenance of their eolian components, La Sal Mountains, Utah, USA[J]. Quaternary Science Reviews,2018-01-01,185