کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1753122 | 1522575 | 2014 | 26 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Origin of minerals and elements in the Late Permian coals, tonsteins, and host rocks of the Xinde Mine, Xuanwei, eastern Yunnan, China
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موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
زمین شناسی اقتصادی
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چکیده انگلیسی
Two intra-seam tonstein layers in the C3 coal were identified based on their lateral persistence, mineralogical mode of occurrence and composition, as well as their elemental composition. The tonsteins are dominated by kaolinite, with minor quartz and possibly mixed-layer illite/smectite. Both tonsteins were derived from dacitic magma. The ratios of Nb/Ta, Zr/Hf, and U/Th are much lower in tonsteins than in the adjacent coal benches, which is attributed to the hydrothermal leaching.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Coal Geology - Volume 121, 1 January 2014, Pages 53-78
Journal: International Journal of Coal Geology - Volume 121, 1 January 2014, Pages 53-78
نویسندگان
Shifeng Dai, Tian Li, Vladimir V. Seredin, Colin R. Ward, James C. Hower, Yiping Zhou, Mingquan Zhang, Xiaolin Song, Weijiao Song, Cunliang Zhao,