福建省表壳元素丰度

Element Abundance of the Exposed Crust in Fujian Province

按新一代福建省地质图的岩石地层和侵入岩话系单位划分的岩石类型采样，经无污染加工，制备组合分析样，由国内3家权威实验室，用中子活化法等15种分析手段，定量测试62种元素，又按构造区和岩石类型制备大组合样测定15种元素。采用福建地壳厚度31．5km，三分法地完模型，计算福建省表壳（出露地壳）、各地质构造单元，以及四大岩石类型的元素丰度，初步讨论福建省地壳与各地质构造单元的主要成分特征。

According to the rock-stratigraphic units and intrusive rock lineage units from the new geological map of Fujian Province, the composite analysis samples had been collected in rock types, processed and preparated without pollution. 62 elements had been quantitatively determinated by 15 analytical methods, such as neutron actication analysis (NAA) in three internal authority laboratories' The big composite analysis samples had been preparated according to tectonic areas and rock types,and 15 elements determinated. Using the 31. 5-kmthickness and three-divided crust model, the element abundances of the exposed crust,tectonic units, and 4 types rocks in Fujian Province had been calculated. In the paper, the authors made an initial discussion of the main chemical component features of the crust and tectonic units in Fujian Province.