Bouchikhi Hadjira;王夏;马仲武;伍明;颜佳新;

• 1:中国地质大学生物地质与环境地质教育部重点实验室
• 2:Department of Earth Sciences
• 3:University Abou Bekr Belkaid Tlemcen
• 4:中南民族大学化学与材料学院

摘要(Abstract)：

研究了广西来宾铁桥剖面栖霞组的黏土矿物组合和地球化学特征的纵向变化特征。黏土矿物分析结果表明,栖霞组上部和下部地层中,黏土矿物含量较高,以伊利石、绿泥石为主,含少量的高岭石和蒙脱石;中部地层中黏土矿物含量较少。在电子显微镜下,有些黏土矿物,如伊利石,发育在草莓状黄铁矿晶体之间,形成于早期成岩作用阶段。整体上黏土矿物成因与陆源碎屑物质输入有关。配套的地球化学分析表明,Al、Fe和Ti质量分数等反映陆源物质的指标,在栖霞组下部和上部质量分数较高,中部明显较低。上述黏土矿物分析和地球化学测试结果意味着该地区二叠纪栖霞期呈现一个明显的陆源碎屑物质输入旋回变化,早期和晚期陆源物质供应较明显,而中期较贫乏,可为该区进一步古地理研究提供重要参考。

关键词(KeyWords)： 栖霞组;黏土矿物;铁桥剖面;陆源碎屑

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目(40472062)

作者(Author): Bouchikhi Hadjira;王夏;马仲武;伍明;颜佳新;

Email:

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