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- W2405874043 abstract "Abstract The Qaidam Basin is an arid, closed, intermontane basin located on the northern margins of the Tibetan Plateau in China. A 938.5 m-long core (SG-1), dated between ∼2.8 Ma–0.1 Ma, was obtained from the western Qaidam Basin. Gypsum is one of major evaporative minerals in the core. A total of 201 gypsum samples were selected and their crystal morphologies were carefully investigated. The crystal habits are lenticular, prismatic, tabular, twinned, stubby, and aggregate. Prismatic crystals occur in the upper 723 m, while lenticular crystals exist almost entirely in the upper 523 m. Tabular crystals are the most common morphology. The total abundance of gypsum crystal (including tabular, lenticular, and prismatic forms) tends to increase with decreasing depth. The relationship between crystal habits and depositional environments is complex, because same morphology can appear in different environments, and different morphologies can also occur in the same depositional environment. However, the occurrence of different morphologies can be attributed to the variable growth rates caused by the inhibition effect of additional cations (e.g. Mg2+, Na+, K+ and Sr2+) on particular lattice parameters and the variation in precipitation experiments. The lattice parameters of the unit cell of gypsum, measured by X-ray diffraction method, are: a = 5.854–12.57 A; b = 9.654–16.231 A; and c = 5.163–14.024 A; β = 113.54–119.88°; Volume = 601.55–712.65 A3. The substitution of K+, Na+ and Mg2+ for Ca2+ can reduce c-axis, while Sr2+ can reduce a and b axes. a/c, b/c, a/b tend to increase with K+, Na+ and Mg2+ and decrease with Sr2+. The Mg2+, Na+, K+ and Sr2+ contents in gypsum show significant variability, with K/Ca molar ratios varying from 1.03 × 10−4 to 32.08 × 10−4, Mg/Ca molar ratios from 0.0023 to 0.1629, Na/Ca molar ratios from 0.031 to 0.575, and Sr/Ca molar ratios from 5.59 × 10−4 to 19.67 × 10−4. Sr2+, Mg2+, Na+, and K+ concentrations in gypsum mainly depend on growth rate and brine concentration." @default.
- W2405874043 created "2016-06-24" @default.
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- W2405874043 date "2017-02-01" @default.
- W2405874043 modified "2023-10-14" @default.
- W2405874043 title "Variation of gypsum morphology along deep core SG-1, western Qaidam Basin (northeastern Tibetan Plateau) and its implication to depositional environments" @default.
- W2405874043 cites W1967570061 @default.
- W2405874043 cites W1978100256 @default.
- W2405874043 cites W1978940579 @default.
- W2405874043 cites W1979087924 @default.
- W2405874043 cites W1980490862 @default.
- W2405874043 cites W1980923158 @default.
- W2405874043 cites W1986554183 @default.
- W2405874043 cites W1989169629 @default.
- W2405874043 cites W1995053881 @default.
- W2405874043 cites W1996291435 @default.
- W2405874043 cites W1996732046 @default.
- W2405874043 cites W1997819110 @default.
- W2405874043 cites W1998156763 @default.
- W2405874043 cites W2008137968 @default.
- W2405874043 cites W2008370806 @default.
- W2405874043 cites W2010352499 @default.
- W2405874043 cites W2011253272 @default.
- W2405874043 cites W2016319976 @default.
- W2405874043 cites W2016573964 @default.
- W2405874043 cites W2021052858 @default.
- W2405874043 cites W2025086651 @default.
- W2405874043 cites W2028233318 @default.
- W2405874043 cites W2035368044 @default.
- W2405874043 cites W2035718784 @default.
- W2405874043 cites W2036349124 @default.
- W2405874043 cites W2037026371 @default.
- W2405874043 cites W2038949603 @default.
- W2405874043 cites W2043833070 @default.
- W2405874043 cites W2044488477 @default.
- W2405874043 cites W2047165001 @default.
- W2405874043 cites W2050784296 @default.
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- W2405874043 cites W2051729455 @default.
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- W2405874043 cites W2168369208 @default.
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- W2405874043 doi "https://doi.org/10.1016/j.quaint.2015.12.102" @default.
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