摘要
本文通过稀土解析实验和稀土富集系数K_k值计算认为:在碳酸盐岩的岩溶次生成岩——即生成岩溶化学沉积物过程中不存在稀土元素富集,岩溶碎屑沉积物中则存在稀土元兴富集.不同矿物成份的岩溶粘土沉积物中,可溶性稀土和残存稀土组成均相对于全样稀土组成呈对称分布关系.其中前者富集N_d——Lu而La、Ce贫化,残存稀土相反.相对于俄罗斯陆台沉积岩稀土平均值而言,水云母粘土和蒙脱石粘土全样中富集中,重稀土而轻稀土贫化,高岭石粘土则相反.三种粘土的可溶性稀土组成中最大富集元素彼此不同.
It is considered in this paper, through the desorption experiments of REE and the calculation of REE enrichment factor-Kk: There is no REE enrichment during the chemical sedimentation processes of karst secondary rock of carbonate -generation of tarsi, but the phemomenon occurs in the karst fragmcntal sediments. A symmetrical distribution relationship is appeared for both soluble REE and remnant REE comparation to total REE in the karst clay sediments of variable mineral components, of which the former is rich in Nd and lack of Lu, La, Ce, but the latter is contrary. In comparision with the mean value of REE in Russian Table sediments, the damourite and askanite clay is rich in middle and high REE, but lack of light REE, kaolin is contrary. The soluble REE component among the three clays is different in the richest element one another.
出处
《贵州科学》
1994年第2期11-17,共7页
Guizhou Science
基金
国家自然科学基金
北京中关村联合分析基金资助项目
关键词
岩溶沉积物
可溶性物质
稀土族
Kant Sediments
Soluble REE
Enrichment
Component
