DOI: 10.1002/2015GL064340
论文题名: Rainfall thresholds for the precipitation of carbonate and evaporite minerals in modern lakes in northern China
作者: Gu N. ; Jiang W. ; Wang L. ; Zhang E. ; Yang S. ; Xiong S.
刊名: Geophysical Research Letters
ISSN: 0094-9438
EISSN: 1944-9169
出版年: 2015
卷: 42, 期: 14 起始页码: 5895
结束页码: 5901
语种: 英语
英文关键词: authigenic mineral sequence
; East Asian monsoon region
; rainfall thresholds
; water chemistry
Scopus关键词: Calcite
; Hydrochemistry
; Lakes
; Precipitation (meteorology)
; Rain
; Authigenic carbonates
; Authigenic minerals
; East Asian monsoon
; Ionic concentrations
; Lakewater chemistry
; Paleoprecipitation
; Rainfall thresholds
; Water chemistry
; Minerals
; calcification
; calcite
; carbonate
; dolomite
; evaporite
; hydrochemistry
; lake water
; paleoatmosphere
; quantitative analysis
; rainfall
; uncertainty analysis
; water chemistry
; China
英文摘要: Authigenic carbonate and evaporite minerals in lake sediments are widely used to qualitatively reconstruct climate. However, uncertainties still remain about their quantitative relationship to climate. Here we investigate 86 modern lakes in northern China to examine the relationships between mineral formation, lake water chemistry, and climate. The results show that from east to west, with increasing salinity and ionic concentration, calcite, dolomite, and evaporite minerals (gypsum and halite) occur in sequence. Their eastern boundaries approximate modern isohyets, and we define for the first time rainfall thresholds of 600mm, 400mm, and 350mm for the formation of calcite, dolomite, and evaporite minerals, respectively. Since the 400mm and 600mm isohyets also coincide with vegetation boundaries, our findings enable a new approach for the quantitative reconstruction of paleoprecipitation and paleovegetation based on mineral analysis. © 2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84938843755&doi=10.1002%2f2015GL064340&partnerID=40&md5=a5e78e3c02cebee523b68a45197f4749
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9053
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: Key Laboratory of Cenozoic Geology and Environment, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, China
Recommended Citation:
Gu N.,Jiang W.,Wang L.,et al. Rainfall thresholds for the precipitation of carbonate and evaporite minerals in modern lakes in northern China[J]. Geophysical Research Letters,2015-01-01,42(14).