DOI: 10.1016/j.quascirev.2018.03.004
Scopus记录号: 2-s2.0-85044148529
论文题名: Orbital time scale records of Asian eolian dust from the Sea of Japan since the early Pliocene
作者: Zhang W. ; De Vleeschouwer D. ; Shen J. ; Zhang Z. ; Zeng L.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2018
卷: 187 起始页码: 157
结束页码: 167
语种: 英语
英文关键词: Asian dust
; IODP site U1422
; Pleistocene
; Pliocene
; Sea of Japan
Scopus关键词: Geomagnetism
; Asian dust
; IODP site U1422
; Pleistocene
; Pliocene
; Sea of Japan
; Dust
; aridification
; benthic foraminifera
; cooling
; eolian deposit
; historical record
; ice sheet
; Northern Hemisphere
; Ocean Drilling Program
; orbital forcing
; oxygen isotope
; Pleistocene
; Pliocene
; uplift
; China
; Pacific Ocean
; Qinghai-Xizang Plateau
; Sea of Japan
; Foraminifera
英文摘要: A high-resolution potassium content record of sediments from Integrated Ocean Drilling Program (IODP) Site U1422 drilled in the northern Sea of Japan was employed to yield an astronomical timescale for this ∼205 m thick sedimentary archive. The K content was quantified using the natural gamma radiation (NGR) data routinely measured on DV JOIDES Resolution. The U1422 K (wt.%) series shows an increasing trend with time, which parallels the growth of North Hemisphere ice sheets since ∼4 Ma, as revealed by the global benthic foraminifer's oxygen isotope stack (LR04). We propose that K content variations reflect changes in the relative contributions of Asian eolian dust and volcanic weathering products, in response to changes in global ice volume. Using the shipboard age model, constrained by palaeomagnetism and nanofossils datums, we tuned the U1422 K content variations to the LR04 stack. Our tuned age model for site U1422 goes back to 3.9 Ma. The studied record indicates that Asian dust generation is enhanced during periods of global cooling. The synchronous variations between the U1422 K record and the LR04 stack also suggest that global cooling played a dominant role in promoting the central Asian aridification since ∼3.9 Ma, while the uplift of Tibetan Plateau plays a secondary role, considering many disagreements still exists between the timing and amplitude of the Qinghai-Tibetan uplift and the evolution of central Asian aridity since the early Pliocene. © 2018 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/112229
Appears in Collections: 气候减缓与适应
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作者单位: State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing, 210008, China; MARUM - Center for Marine Environmental Sciences, University of Bremen, Bremen, Germany; Institute of Earth Environment, Chinese Academy of Sciences, Xi'an, 710075, China; Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, China
Recommended Citation:
Zhang W.,De Vleeschouwer D.,Shen J.,et al. Orbital time scale records of Asian eolian dust from the Sea of Japan since the early Pliocene[J]. Quaternary Science Reviews,2018-01-01,187