کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5113873 | 1484080 | 2017 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Variation of gypsum morphology along deep core SG-1, western Qaidam Basin (northeastern Tibetan Plateau) and its implication to depositional environments
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
زمین شناسی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Variation of gypsum morphology along deep core SG-1, western Qaidam Basin (northeastern Tibetan Plateau) and its implication to depositional environments Variation of gypsum morphology along deep core SG-1, western Qaidam Basin (northeastern Tibetan Plateau) and its implication to depositional environments](/preview/png/5113873.png)
چکیده انگلیسی
The lattice parameters of the unit cell of gypsum, measured by X-ray diffraction method, are: a = 5.854-12.57 Ã
; b = 9.654-16.231 Ã
; and c = 5.163-14.024 Ã
; β = 113.54-119.88°; Volume = 601.55-712.65 Ã
3. 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 1.03Â ÃÂ 10â4 to 32.08Â ÃÂ 10â4, 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 5.59Â ÃÂ 10â4 to 19.67Â ÃÂ 10â4. Sr2+, Mg2+, Na+, and K+ concentrations in gypsum mainly depend on growth rate and brine concentration.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Quaternary International - Volume 430, Part B, 12 February 2017, Pages 71-81
Journal: Quaternary International - Volume 430, Part B, 12 February 2017, Pages 71-81
نویسندگان
Jiao Li, Minghui Li, Xiaomin Fang, Zhengrong Wang, Weilin Zhang, Yibo Yang,