DOI: 10.1016/j.quascirev.2017.09.004
Scopus记录号: 2-s2.0-85034644909
论文题名: Synoptic conditions of fine-particle transport to the last interglacial Red Sea-Dead Sea from Nd-Sr compositions of sediment cores
作者: Palchan D. ; Stein M. ; Goldstein S.L. ; Almogi-Labin A. ; Tirosh O. ; Erel Y.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2018
卷: 179 起始页码: 123
结束页码: 136
语种: 英语
英文关键词: Dead Sea
; Dust sources
; ICDP Dead Sea core
; Late Quaternary
; Levant
; Loess
; Nd-Sr isotopes
; Paleo-climate
; Paleo-synoptic
; Red Sea
Scopus关键词: Binary alloys
; Chloride minerals
; Climatology
; Dust
; Floods
; Floors
; Glacial geology
; Isotopes
; Lakes
; Landforms
; Neodymium
; Neodymium alloys
; Sea level
; Seawater
; Soils
; Storms
; Strontium
; Strontium alloys
; Watersheds
; Dead sea
; Dust sources
; Late quaternary
; Levant
; Loess
; Nd-Sr isotopes
; Paleo-climate
; Paleo-synoptic
; Red sea
; Sediments
; depocenter
; dust
; flood
; flooding
; Heinrich event
; hydrological change
; isotopic composition
; Last Interglacial
; loess
; marine isotope stage
; Mediterranean environment
; paleoclimate
; particle size
; precipitation (climatology)
; Quaternary
; sea level change
; sediment core
; strontium
; strontium isotope
; watershed
; Dead Sea
; Indian Ocean
; Levantine Sea
; Mediterranean Sea
; Red Sea [Indian Ocean]
; Sahara
英文摘要: The sediments deposited at the depocenter of the Dead Sea comprise high-resolution archive of hydrological changes in the lake's watershed and record the desert dust transport to the region. This paper reconstructs the dust transport to the region during the termination of glacial Marine Isotope Stage 6 (MIS 6; ∼135–129 ka) and the last interglacial peak period (MIS5e, ∼129–116 ka). We use chemical and Nd and Sr isotope compositions of fine detritus material recovered from sediment core drilled at the deepest floor of the Dead Sea. The data is integrated with data achieved from cores drilled at the floor of the Red Sea, thus, forming a Red Sea-Dead Sea transect extending from the desert belt to the Mediterranean climate zone. The Dead Sea accumulated flood sediments derived from three regional surface cover types: settled desert dust, mountain loess-soils and loess-soils filling valleys in the Dead Sea watershed termed here “Valley Loess”. The Valley Loess shows a distinct 87Sr/86Sr ratio of 0.7081 ± 1, inherited from dissolved detrital calcites that originate from dried waterbodies in the Sahara and are transported with the dust to the entire transect. Our hydro-climate and synoptic conditions reconstruction illustrates the following history: During glacial period MIS6, Mediterranean cyclones governed the transport of Saharan dust and rains to the Dead Sea watershed, driving the development of both mountain soils and Valley Loess. Then, at Heinrich event 11, dry western winds blew Saharan dust over the entire Red Sea - Dead Sea transect marking latitudinal expansion of the desert belt. Later, when global sea-level rose, the Dead Sea watershed went through extreme aridity, the lake retreated, depositing salt and accumulating fine detritus of the Valley Loess. During peak interglacial MIS 5e, enhanced flooding activity flushed the mountain soils and fine detritus from all around the Dead Sea and Red Sea, marking a significant “contraction” of the desert belt. At the end of MIS 5e the effect of the regional precipitation diminished and the Dead Sea and Red Sea areas re-entered sever arid conditions with extensive salt deposition at the Dead Sea. © 2017 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/112343
Appears in Collections: 气候减缓与适应
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作者单位: The Fredy & Nadine Herrmann Institute of Earth Sciences, The Hebrew University of Jerusalem, Jerusalem, Israel; Geological Survey of Israel, Jerusalem, Israel; Lamont-Doherty Earth Observatory and Department of Earth and Environmental Sciences, Columbia University, Palisades, NY, United States
Recommended Citation:
Palchan D.,Stein M.,Goldstein S.L.,et al. Synoptic conditions of fine-particle transport to the last interglacial Red Sea-Dead Sea from Nd-Sr compositions of sediment cores[J]. Quaternary Science Reviews,2018-01-01,179