Oxygen isotope and microparticle studies of snow samples from Quelccaya Ice Cap, Peru

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Authors:Thompson, L. G.; Dansgaard, W.
Volume Title:Antarctic journal of the United States
Source:Antarctic journal of the United States. 10(1). United States. P.24-26. ISSN: 0003-5335
Publication Date:1975
Note:4 refs. Ant. Acc. No: 15000. CRREL Acc. No: 29003566
Abstract:Microparticle studies of snow samples from Quelccaya ice cap suggests that analyses of microparticle concentration and size distribution might be used for determining annual layering, and hence for dating deep ice cores from this ice cap. The profile of the stable oxygen isotope ratios shows an apparent seasonal distribution with the most negative values occurring respectively in winter and summer snow. This is opposite to normal seasonal variations. Further, the range of oxygen isotope values is greater than has been reported for any other snow, firn, or ice core. It is suggested that this stratigraphy represents 2 years of accumulation.
Index Terms:Snow--Chemistry; Snow--Stratigraphy; Ice sheet--Cores; Particulates; Snow stratigraphy; Particle size distribution; Drill core analysis; Ice sheets; Isotope analysis; Ice dating
Publication Type:journal article
Record ID:53052
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