沉积相稀土地球化学标志
REE Geochemical Characteristics of Sedimentary Facies
作者: 肖荣阁 , 赵 青 , 杨 帆 , 崔 蒙 , 孟 辉 , 张腾飞 , 姜雨奇 :中国地质大学(北京)地球科学与资源学院,北京; 刘敬党 :辽宁省化工地质勘查院,辽宁 锦州; 费红彩 :中国地质科学院,北京; 白凤军 :河南省有色金属地质矿产局,河南 郑州;
关键词: 沉积相; 海源海相; 陆源陆相; 潮坪相磷块岩; Sedimentary Facies; Trench Sediments; Continental Sediments; Tidal-Flat Phosphorite
摘要:Abstract: Sedimentary facies study is a base of research on sedimentary deposits. In this paper, a systematic study is carried out on REE geochemical characteristics of different sedimentary facies, followed by the exploration about evolution of REE in supergene environment. Based on the analysis of the REE distribution patterns about Chile trench sediments, Mesozoic continental sedimentary rocks in Mayang and tidal-flat phosphorite, a regular pattern is summarized that REE distribution features vary among different sedimentary facies. More specifically, the correlations of LRE/HRE- ΣREE and δEu-LRE/HRE are significantly different among the rocks of different sedimentary source and sedimentary facies. Marine sea sediments show a positive correlation in LRE/HRE-ΣREE diagram and a negative correlation in δEu-LRE/HRE diagram, while for the terrigenous continental sediments, the conditions are just the opposite. Furthermore, marine mixed-source sediments display a curvilinear correlation in LRE/HRE-REE and δEu-LRE/HRE diagrams. As Zr/Y ratios have some influence on the correlations of LRE/HRE-REE and δEu-LRE/HRE, the correlations and REE patterns can be used to distinguish different sedimentary facies.
文章引用: 肖荣阁 , 刘敬党 , 费红彩 , 白凤军 , 赵 青 , 杨 帆 , 崔 蒙 , 孟 辉 , 张腾飞 , 姜雨奇 (2015) 沉积相稀土地球化学标志。 地球科学前沿, 5, 193-234. doi: 10.12677/AG.2015.53023
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