摘要
东山峰背斜寒武系地层分布区内，Ｂ，Ｌｉ元素的水系沉积物测量平均值分别为１７７．７８×１０－６、２２０．０×１０－６，衬值分别为２．３２、５．０７，Ｒｂ／ｋ比值为０．００６２。这些地球化学特征具典型的指相意义，反映出本区在早寒武世晚期至中、晚寒武世期间为一高盐度、强蒸发的泻湖相沉积环境，可与现代盐湖相环境类比。
In the region of Cambrian strata of Dongshanfeng anticline,the average abundances of B arid Li in drainage sediments are 177.78× 10-6 and 220.2× 10-6,and their backgroung values 2.32 and 5.07 respec- tively,with ratio Rb/K0.0062.These features have a typical significance of geochemical facies indication and demon.trate that this region was a laguna environment with high sanility and strong evaporation from the late staRe of lower Cambrian Period to middle-upper Cambrian Period. It should be analogous to the environrnent of modern salt lake.
出处
《湖南地质》
1994年第2期71-74,共4页
Hunan Geology
