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DOI10.1146/annurev-earth-081619-052609
Glacier Change and Paleoclimate Applications of Cosmogenic-Nuclide Exposure Dating
Balco G.
发表日期2020
ISSN0084-6597
起始页码21
结束页码48
卷号48
英文摘要Surface exposure dating using cosmic-ray-produced nuclides has been applied to determine the age of thousands of landforms produced by alpine glaciers in mountain areas worldwide. These data are potentially an extensive, easily accessible, and globally distributed paleoclimate record. In particular, exposure-dated glacier chronologies are commonly applied to study the dynamics of massive, abrupt climate changes characteristic of the transition between the Last Glacial Maximum and the present interglacial climate. This article reviews developments in exposure dating from the perspective of whether this goal is achievable and concludes that (a) individual exposure-dated landforms cannot, in general, be associated with millennial-scale climate events at high confidence, but (b) dating uncertainties appear to be geographically and temporally unbiased, so the data set as a whole can be used to gain valuable insight into regional and global paleoclimate dynamics. Future applications of exposure-age chronologies of glacier change should move away from reliance on individual dated landforms and toward synoptic analysis of the global data set. Mountain glaciers worldwide leave a geologic record of their past advances and retreats, which reflect past climate changes. Geochemical dating methods based on cosmic-ray-produced nuclides have been used to date these deposits at thousands of sites worldwide. This data set is potentially an extensive, accessible, and globally distributed paleoclimate record. © Copyright 2020 by Annual Reviews. All rights reserved.
关键词Cosmic raysCosmologyGeomorphologyIsotopesLandformsAbrupt climate changeFuture applicationsGlobal paleoclimateIndividual exposuresInterglacial climateLast Glacial MaximumPaleoclimate recordsSurface exposure datingClimate changecosmic raycosmogenic radionuclidedating methodglacierhistorical recordinterglacialLast Glacial Maximummountain regionpaleoclimatepollution exposure
语种英语
来源机构Annual Review of Earth and Planetary Sciences
文献类型期刊论文
条目标识符http://gcip.llas.ac.cn/handle/2XKMVOVA/131912
推荐引用方式
GB/T 7714
Balco G.. Glacier Change and Paleoclimate Applications of Cosmogenic-Nuclide Exposure Dating[J]. Annual Review of Earth and Planetary Sciences,2020,48.
APA Balco G..(2020).Glacier Change and Paleoclimate Applications of Cosmogenic-Nuclide Exposure Dating.,48.
MLA Balco G.."Glacier Change and Paleoclimate Applications of Cosmogenic-Nuclide Exposure Dating".48(2020).
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