巢北地区黄龙组岩石学、元素地球化学特征及意义  

Petrology,Element Geochemistry Characteristics and Significance of Huanglong Formation,Chaobei Area

作　　者：韩宗珠[1] 衣伟虹[1] 李安龙[1] 李德平[1] 

机构地区：[1]中国海洋大学海洋地球科学学院,海底科学与探测技术教育部重点实验室,山东青岛266100

出　　处：《中国海洋大学学报（自然科学版）》2010年第9期123-127,共5页Periodical of Ocean University of China

基　　金：山东省自然科学基金项目(Y2007E08)资助

摘　　要：安徽巢湖麒麟山中石炭统碳酸盐岩地层是研究碳酸盐岩沉积及成岩作用的理想剖面之一。文章采用岩相学及元素地球化学分析法,对该处剖面碳酸盐岩的特征做了深入研究。表明,黄龙组岩石以泥晶或亮晶颗粒灰岩为主;元素分布中稀土元素总量较低。分析认为,巢北地区中石炭统属于浅海碳酸盐台地相产物,其成岩序列属于海退序列,成岩环境主要为大气淡水成岩环境。The section of eastern Qilin Mountain in Chaohu area, Anhui Province, is an ideal section for the Middle Carboniferous carbonate rock study. In this paper, the petrology and geochemistry characteristics of the carbonate rock have been deeply studied with facieology and element geochemistry method. It is concluded that the Huanglong Formation rock is mainly formed by micrite or calcsparite granule calcareous rock. Trace and REE elements reveal that the total concentration of REE is low. The final result is that the Middle Carboniferous Huanglong Formation Rock is formed in neritic carbonate plat-fa-cleazone. The petrogenetie cycle belongs to regressive cycle, while the diagenetic environment is fresh water of atmosphere.

关 键 词：岩相学 微量元素 沉积相 海退序列 

分 类 号：P534.45[天文地球—古生物学与地层学] P595[天文地球—地质学]