| 岩溶地区红土与碳酸盐岩上覆地层相关性及其指示意义——以贵阳乌当区剖面为例 |
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| 引用本文： | 曹星星,吴攀,王志强,李本云,楼明君.岩溶地区红土与碳酸盐岩上覆地层相关性及其指示意义——以贵阳乌当区剖面为例[J].地球与环境,2012(1):57-62. |
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| 作者姓名： | 曹星星 吴攀 王志强 李本云 楼明君 |
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| 作者单位： | 贵州大学资源与环境工程学院 |
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| 基金项目： | 国家“973”计划项目“碳酸盐岩风化的生物地球化学过程与成土速率”(2006CB403202) |
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| 摘 要： | 本文以贵阳乌当剖面为研究对象,通过对岩石、土壤的矿物学、地球化学指标的分析,探讨该地红土与基岩(桐梓组白云岩)以及上覆地层(红花园组灰岩和湄潭组下段碎屑岩)之间的物源关系。结果显示碳酸盐岩酸不溶物以石英为主,红土与碎屑岩具有相似矿物组合特征;主量元素、微量元素证据显示湄潭组碎屑岩、红花园组灰岩和桐梓组白云岩酸不溶物都为红土的形成提供了物源,其中可能以湄潭组碎屑岩贡献最大。
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| 关 键 词： | 红土 碎屑岩 风化壳 碳酸盐岩 上覆地层 |
Investigation on the Relativity Between Terra Rossa and Overlying Carbonate Strata and Its Implication at Wudang District of Guiyang City |
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| CAO Xing-xing,WU Pan,WANG Zhi-qiang,LI Ben-yun,LOU Ming-jun.Investigation on the Relativity Between Terra Rossa and Overlying Carbonate Strata and Its Implication at Wudang District of Guiyang City[J].Earth and Environment,2012(1):57-62. |
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| Authors: | CAO Xing-xing WU Pan WANG Zhi-qiang LI Ben-yun LOU Ming-jun |
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| Institution: | (Institute of Resource and Environment Engineering,Guizhou University,Guiyang55003,China) |
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| Abstract: | This paper dealt with the Wudang soil profile and explored the relations between terra rossa,the basement rock(the Tongzi Formation dolomite) and the overlying strata(the Honghuayuan Formation limestone and the lower Meitan Formation clastic rock).The results showed that the acid-insoluble substances in carbonate rocks are dominated by quartz,and both terra rossa and clastic rock have similar mineral assemblage characteristics;major element and trace element evidence indicated that acid-insoluble substances in the Meitan Formation clastic rock,the Honghuayuan Formation limestone and the Tongzi Formation dolomite all provided material sources for the formation of terro rossa.Among them the Meitan Formation clastic rocks have made the greatest contribution. |
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| Keywords: | Terra rossa clastic rock weathering crust carbonate overlying strata |
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