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| 伊犁盆地水西沟群岩石学和地球化学特征 | |
| 引用本文： | 王金平,闵茂中,陈宏斌,何永振,高立宝. 伊犁盆地水西沟群岩石学和地球化学特征[J]. 铀矿地质, 2003, 19(1): 8-15 |
| 作者姓名： | 王金平 闵茂中 陈宏斌 何永振 高立宝 |
| 作者单位： | 1. 南京大学地球科学系,江苏,南京,210093;中国核工业地质局203研究所,陕西,咸阳,712000 2. 南京大学地球科学系,江苏,南京,210093 3. 中国核工业地质局203研究所,陕西,咸阳,712000 |
| 基金项目： | 本研究项目得到核工业地质局科研基金，国家自然科学基金 (编号 :4 0 1 730 31 )联合资助。 |
| 摘 要： | 中下侏罗统水西沟群是伊犁盆地可地浸砂岩型铀矿床的成矿主岩，该套岩系在成岩期曾遭受了广泛的溶蚀作用，其原因最可能是该套地层中所含的已达成熟状态的大量有机质（煤层）衍生出含羧酸和CO2的水介质。溶蚀的结果使砂岩变得疏松而多孔。本文给出了该成矿主岩包括铀、有机碳和常量元素在内的地球化学背景值。研究表明，铀、有机碳和常量元素在各个旋回砂岩中的分布与后生的层间氧化带砂岩型铀矿的形成、成矿与非成矿层间氧化带的识别有密切的关系。 |
| 关 键 词： | 岩石学 水西沟群 次生孔隙 地球化学 伊犁盆地 铀矿床 有机碳 |
| 文章编号： | 1000-0658(2003)01-0008-08 |
Petrological and geochemical characteristics of Shuixigou Group in Yili basin |
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| WANG Jin-ping , MIN Mao-zhong CHEN Hong-bin HE Yong-zhen GAO Li-bao. Petrological and geochemical characteristics of Shuixigou Group in Yili basin[J]. Uranium Geology, 2003, 19(1): 8-15 | |
| Authors: | WANG Jin-ping MIN Mao-zhong CHEN Hong-bin HE Yong-zhen GAO Li-bao |
| Affiliation: | WANG Jin-ping 1,2 MIN Mao-zhong1 CHEN Hong-bin2 HE Yong-zhen2 GAO Li-bao2 |
| Abstract: | The Shuixigou Group,Lower?Middle Jurassic is the uranium-hosting formation of in-situ leachable sandstone-type uranium deposits in Yili basin.Rocks of the Shuixigou Group were extensively corroded during the diagenesis by the CO 2-and organic acid-rich water derived from the organic matter existing in the strata.As a result,sandstones became loose and porous.Data of geochemical background such as uranium,organic carbon and major element contents in this paper are research achievements of authors.Research results indicate that the distribution of uranium,organic matter and major elements is closely associated with the formation of epigenetic interlayer oxidation zone sandstone-type uranium deposits,and with the discrimination of ore-hosting and barren interlayer oxidation zones. |
| Keywords: | Shuixigou Group secondary pore geochemistry Yili basin |
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