地质力学学报2017，Vol.23Issue(3)：348-357,10.
滇东北镇雄西部栖霞—茅口组碳酸盐岩地球化学特征及环境意义
GEOCHEMICAL CHARACTERISTICS AND ENVIRONMENTAL SIGNIFICANCE OF THE CARBONATE ROCKS IN QIXIA-MAOKOU FORMATION IN WESTERN ZHENXIONG, NORTHEASTERN YUNNAN
摘要
Abstract
Qixia-Maokou Formation in Middle Permain,in Anjiaba of Zhenxiong County,is well outcropped and continuously deposited.Making this section as the research object,collecting 42 samples of carbonate rocks,based on the microscopic characteristics,the elements correlation,the elements content as well as the ratio characteristics of the related elements,the geochemical characteristics and the paleo environmental significance of the carbonate rocks in the study area were discussed.Some conclusions have been drawn.Firstly there are obvious negative correlations between CaO and SiO2,MgO in the rock samples,and the contents of the latter two in rocks are rather low,which both indicate that the samples are less affected and transformed by the terrigenous material in the process of deposition and diagenesis.Secondly,based on the analysis of the element contents and the vertical distribution characteristics of the relevant elements ratios,such as Sr/Ba,MgO/CaO and V/V + Ni etc,and the study of the paleo-water depth and the paleo-oxygenation facies in different sedimentary stages,the data show that compared with Qixia Formation,the sedimentary environment of Maokou Formation has obvious difference.关键词
碳酸盐岩/地球化学特征/古环境/栖霞组/茅口组Key words
Carbonate rocks/Geochemical characteristics/palaeoenvironment/Qixia Formation/Maokou Formation分类
天文与地球科学引用本文复制引用
潘明,郝彦珍,吕勇,山克强,苏光样..滇东北镇雄西部栖霞—茅口组碳酸盐岩地球化学特征及环境意义[J].地质力学学报,2017,23(3):348-357,10.基金项目
中周地质科学院岩溶地质研究所基本科研业务费项目(No.2015015) （No.2015015）
中国地质调查局地质调查项目(12120114042601,DD20160061) （12120114042601,DD20160061）
