DOI: 10.1002/2015GL064357
论文题名: Clay-sized Hf-Nd-Sr isotopic composition of Mongolian dust as a fingerprint for regional to hemispherical transport
作者: Zhao W. ; Sun Y. ; Balsam W. ; Zeng L. ; Lu H. ; Otgonbayar K. ; Ji J.
刊名: Geophysical Research Letters
ISSN: 0094-9534
EISSN: 1944-9265
出版年: 2015
卷: 42, 期: 13 起始页码: 5661
结束页码: 5669
语种: 英语
英文关键词: airborne dust transport
; Asian dust sources
; clay-sized fractions
; Hf-Nd-Sr isotopic composition
; Mongolian dust
; the Central Asian Orogenic Belt
Scopus关键词: Arid regions
; Hafnium
; Isotopes
; Particle size
; Sediments
; Strontium
; Airborne dusts
; Asian dust
; Central Asian orogenic belt
; Clay-sized fractions
; Mongolians
; Sr isotopic compositions
; Dust
; atmospheric pollution
; clay soil
; desert
; dust
; isotopic composition
; isotopic fractionation
; loess
; neodymium isotope
; orogenic belt
; particle size
; pollutant source
; pollutant transport
; provenance
; strontium isotope
; Arctic
; Beijing [China]
; China
; Greenland
; Hulun Buir Desert
; Mongolian Plateau
; Nei Monggol
英文摘要: Hf-Nd-Sr isotopic fingerprinting has been employed as a powerful method for distinguishing dust sources. However, the Hf and Sr isotopic compositions of dust are highly dependent on particle size to accurately identify dust provenance. Here we compare the Hf-Nd-Sr isotopic compositions of clay-sized fractions from dust sources (the Mongolian Plateau) to sinks (Beijing and Greenland). Our results document that clay-sized Hf-Nd-Sr isotopic compositions of Mongolian dust are controlled by two isotopic/geochemical provinces: Southern Mongolian Gobi (SMG) and Northern Mongolian Plateau (NMP). Our data indicate that the SMG is potentially an important dust source to the loess in Beijing and Hulun Buir and could be a contributing source of dust to Greenland, whereas the NMP contributes little dust to the Chinese loess and the Greenland. Furthermore, we demonstrate that the deserts of northwest China are one of the main dust contributors to Beijing and Greenland, but not to Hulun Buir. Key Points The clay-sized radiogenic isotopic compositions link to the geological setting The Southern Mongolia Gobi could be a contributing source to Greenland The Hf-Nd-Sr isotope constrains on provenances and pathway of mineral dust. © 2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84938151868&doi=10.1002%2f2015GL064357&partnerID=40&md5=06fd7adf9d793efa639b02bc8dda080b
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9149
Appears in Collections: 科学计划与规划 气候变化与战略
There are no files associated with this item.
作者单位: Key Laboratory of Surficial Geochemistry, Ministry of Education, School of Earth Sciences and Engineering, Nanjing University, Nanjing, China
Recommended Citation:
Zhao W.,Sun Y.,Balsam W.,et al. Clay-sized Hf-Nd-Sr isotopic composition of Mongolian dust as a fingerprint for regional to hemispherical transport[J]. Geophysical Research Letters,2015-01-01,42(13).