Geochemistry of rare-earth elements and its significance in the study of climatic and environmental change in Barrow, Arctic Alaska

Weili, Yang and Xueying, Mao and Xiongxin, Dai and Hong, Quyang (2001) Geochemistry of rare-earth elements and its significance in the study of climatic and environmental change in Barrow, Arctic Alaska. Advances in Polar Science, 12 (1). pp. 21-30.

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Abstract

Geochemical characteristics of rare earth elements (REE) and sedimentary features were studied in the borehole 96-7-1 from Elson Lagoon to Barrow, Arctic Alaska. The results show that total contents of REE (ΣREE) are lower, suggesting that physical weathering is dominate, therefore, concentrations of rare earth elements are lower in the paleosediment environment. The chondrite-normalized distribution patterns of REEs are characterized by light REE (LREE) enrichment and Eu depletion with the terrestrial sedimentary rock as the parent materials. In comparison with the borecore AB-67 in Elson Lagoon, the main conclusions for climatic and environmental changes are similar: before 1740 A. D., it was cold and dry with terrestrial properties, but the comparatively warming around 1400 A. D. and 1550 A. D.; after 1740 A. D., it became warming, or markedly after 1821 A. D.; but it was cold around 1890 A. D. From 1904 A. D., it got warm again, but it was relatively cold around 1971 A. D..

Item Type:	Article
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Keywords:	Arctic, rare earth elements, climate, sedimentary facies.
Subjects:	Unspecified
Organizations:	Unspecified
Date Deposited:	02 May 2023 12:38
URI:	http://library.arcticportal.org/id/eprint/2212

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