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Geochemical characteristics of Early Paleozoic sedimentary rocks in the Jinggangshan area,Jiangxi province and the constraining to the sedimentary environment
Author(s): SHEN Weizhou, SHU Liangshu, XIANG Lei, ZHANG Fangrong, WANG Bo
Pages: 2442-
2458
Year: 2009
Issue:
10
Journal: Acta Petrologica Sinica
Abstract: 本文研究的井冈山地区位于华夏地块中部,在早古生代寒武纪-奥陶纪时期沉积了巨厚的泥砂质韵律岩层夹碳酸盐岩和含碳岩层.它们具有较高的SiO_2(53.12%~86.37%,平均为70.16%)和Al_2O_3含量(5.43%~22.70%,平均为13.54%),高的Al_2O_3/(CaO+Na_2O)(1.36~174.6,平均为45.5)与K_2O/Na_2O比值(1.0~64.7,平均为20.4...
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