DOI: 10.1002/2015GL066681
论文题名: Dolomite abundance in Chinese loess deposits: A new proxy of monsoon precipitation intensity
作者: Meng X. ; Liu L. ; Balsam W. ; Li S. ; He T. ; Chen J. ; Ji J.
刊名: Geophysical Research Letters
ISSN: 0094-8342
EISSN: 1944-8073
出版年: 2015
卷: 42, 期: 23 起始页码: 10391
结束页码: 10398
语种: 英语
英文关键词: Chinese loess
; dolomite
; monsoon
; precipitation
Scopus关键词: Atmospheric thermodynamics
; Carbonation
; Dissolution
; Fourier transform infrared spectroscopy
; Leaching
; Precipitation (chemical)
; Sediments
; Chinese loess
; Chinese Loess Plateau
; Dolomite
; Leaching process
; Mean annual precipitation
; Monsoon
; Monsoon precipitation
; Relative abundance
; Calcite
; dolomite
; Holocene
; loess
; monsoon
; paleoclimate
; precipitation intensity
; proxy climate record
; China
; Loess Plateau
英文摘要: Dolomite of detrital origin in carbonate-rich soil can help indicate the intensity of carbonate dissolution and leaching processes. Using Fourier transform infrared spectroscopy, we generated a high-resolution record of dolomite and calcite contents from eight sections on the Chinese Loess Plateau spanning the last 130 kyr. Based on the relative abundance of calcite and dolomite, four dissolution phases of carbonate minerals related to summer monsoon (SM) variations are identified as follows: (1) coexistence of dolomite and calcite indicating a very weak SM with a mean annual precipitation (MAP) < 610 mm; (2) calcite without dolomite indicating a weak SM, 610 < MAP < 690 mm; (3) both dolomite and calcite are absent, but there is no downward leaching indicating a strong SM, 690 < MAP < 725 mm; and (4) both dolomite and calcite are absent, and downward leaching of the underlying loess layer suggesting a very strong SM with MAP > 725 mm. © 2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84953636295&doi=10.1002%2f2015GL066681&partnerID=40&md5=06c3c554f0e4b7b67552715cef9b1a4d
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/7958
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: Ministry of Education Key Laboratory of Surficial Geochemistry, School of Earth Sciences and Engineering, Nanjing University, Nanjing, China
Recommended Citation:
Meng X.,Liu L.,Balsam W.,et al. Dolomite abundance in Chinese loess deposits: A new proxy of monsoon precipitation intensity[J]. Geophysical Research Letters,2015-01-01,42(23).