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Spatial and temporal variations of Rb/Sr ratios of the bulk surface sediments in Lake Qinghai by Hai Xu; Bin Liu; Feng Wu is a Environmental Science article available to read on EtoBox.
What is Spatial and temporal variations of Rb/Sr ratios of the bulk surface sediments in Lake Qinghai about?
The Rb/Sr ratios of lake sediments have been suggested as indicators of weathering intensity by increasing work. However, the geochemistry of Rb/Sr ratios of lake sediments is variable between different lakes. In this study, we investigated the spatial and temporal patterns of Rb/Sr ratios, as well as those of other major elements in surface sediments of Lake Qinghai. We find that the spatial pattern of Rb/Sr ratios of the bulk sediments correlates well with that of the mass accumulation rate, and those of the terrigenous fractions, e.g., SiO 2 , Ti, and Fe. The temporal variations of Rb/Sr ratios also synchronize with those of SiO 2 , Ti, and Fe of each individual core. These suggest that Rb/Sr ratios of the surface sediments are closely related to terrigenous input from the catchment. Two out of eight cores show similar trends between Rb/Sr ratios and precipitation indices on decadal scales; however, the other cores do not show such relationship. The result of this study suggests that physical weathering and chemical weathering in Lake Qinghai catchment have opposite influence on Rb/Sr ratios of the bulk sediments, and they compete in dominating the Rb/Sr ratios of lake sediments
Who reads Spatial and temporal variations of Rb/Sr ratios of the bulk surface sediments in Lake Qinghai?
It is typically read by researchers, students, and practitioners in Environmental Science.
- Author
- Hai Xu; Bin Liu; Feng Wu
- Publisher
- Chemistry Central; Springer (Biomed Central Ltd.); BioMed Central; Cambridge: Published by the Royal Society of Chemistry in collaboration with the Division of Geochemistry of the American Chemical Society, 2000-; London: 2006-; Springer Science and Business Media LLC (ISSN 1467-4866)
- Published
- 2010
- Language
- EN
- Field
- Environmental Science (Physical Sciences)