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近来,国外有许多学者对地壳及其不同构造单元的各种沉积岩,如砂岩、页岩中稀土元素分布特征进行了大量的研究,并据此对地壳的形成和演化提出了一系列观点和理论。我们为了进一步了解我国西藏地区沉积演化历史,在聂拉木沉积剖面上采集了一系列样品,包括了从古生代-中生代-新生代(部分)各个时期的沉积样品,利用仪器中子活化分析方法,对其稀土元素和其它微量元素进行了多元素分析。
Recently, many scholars abroad have made a great deal of researches on the distribution characteristics of rare earth elements in various sedimentary rocks, such as sandstone and shale, in the crust and its different tectonic units, and put forward a series of views and theories on the formation and evolution of the crust . In order to know more about the sedimentary evolution history of Tibet in China, we collected a series of samples from the Nyalam sedimentary section, including sedimentary samples from Paleozoic to Mesozoic to Cenozoic (part of) each period. By means of instrumental neutron activation analysis, Multivariate analysis of its rare earth elements and other trace elements.