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| 华北陆块东南缘上震旦统凤台组磷结核的发现及其意义 | |
| 引用本文： | 曹高社,张善文,随风贵,杨晓勇,刘德良.华北陆块东南缘上震旦统凤台组磷结核的发现及其意义[J].地质通报,2006,25(4):454-459. |
| 作者姓名： | 曹高社 张善文 随风贵 杨晓勇 刘德良 |
| 作者单位： | 1. 河南理工大学资源与环境学院,河南,焦作,454000 2. 胜利石油管理局地质科学研究院,山东,东营,257015 3. 中国科学技术大学地球与空间科学学院,安徽,合肥,230026 |
| 基金项目： | 中国科学院资助项目，国家重点基础研究发展计划(973计划) |
| 摘 要： | 华北陆块东南缘凤台组的底部和中部存在磷结核.这些磷结核的发现表明,凤台组(至少有部分地层)可能形成于温暖的海相环境.凤台组底部与中部磷结核的地球化学特征分析表明,2个层位磷结核的沉积构造环境存在差异,凤台组底部形成于地幔活动较强的海相环境,而中部形成于地幔活动性较弱的闭塞环境. |
| 关 键 词： | 上震旦统凤台组 磷结核 华北陆块东南缘 |
| 文章编号： | 1671-2552（2006）04-0454-06 |
| 收稿时间： | 2005-01-24 |
| 修稿时间： | 2005-10-10 |
Discovery of phosphate concretions in the upper Sinian Fengtai Formation at the southeast margin of the North China block and their implications |
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| CAO Gao-she,ZHANG Shan-wen,SUI Feng-gui,YANG Xiao-yong,LIU De-liang.Discovery of phosphate concretions in the upper Sinian Fengtai Formation at the southeast margin of the North China block and their implications[J].Geologcal Bulletin OF China,2006,25(4):454-459. | |
| Authors: | CAO Gao-she ZHANG Shan-wen SUI Feng-gui YANG Xiao-yong LIU De-liang |
| Institution: | 1. School of Resources and Environment, Henan Polytechnic University, Jiaozuo 454000, Henan,China; 2. Research Institute of Geological Sciences, Shengli Oilfield Administration, Dongying 257015, Shandong,China; 3. School of Earth and Space Sciences,China |
| Abstract: | Phosphate concretions have been found in the basal and middle parts of the Fengtai Formation at the southeast margin of the North China block, which indicates that the Fengtai Formation (at least a part of it) probably formed in the warm marine environment. The geochemical characteristics of the phosphate concretions indicate that the depositional environments of the two horizons of phosphate concretions are different: the base of the Fengtai Formation formed in a marine environment with relatively strong mantle activity, while the middle part formed in a closed environment with relatively weak mantle activity. |
| Keywords: | Upper Siman Fengtai Formation phosphate concretion southeast margin of the North China block |
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