摘要
根据武夷山吴屯—霞浦重力测量剖面反演结果 ,结合布格重力异常特征分析 ,闽东北地壳大体分为 3层 ,其中上地壳厚度 7km～ 13km,主要为花岗岩、沉积岩、变质岩类。中地壳厚度 9km～ 11.4 km,属中性岩类。下地壳厚度 8.4 km～ 13.2 km,属基性岩类。总体表现为“二隆夹一坳”的特点。莫霍面深度为 31.4 km～ 2 7.6 km。
According to the results of gravity profile inversion from Wuyishan Wutun to Xiapu in Fujian, and combining with the analysis on Bouguer gravity anomaly characters, the northeast Fujian crustal structures are divided into three layers The upper crustal layer is 7 to 13km thick, it is composed of granites, sedimentary rocks and atmorphic rocks The middle crustal layer is 9 to 11 4km thick, it is composed of intermediate rocks The lower crustal layer is 8 4 to 13 2km thick, it is made up of basic rocks The crustal structures of the northeast Fujian are generally charactericts of one depression sandwiched between two upheavals Moho depth is 31 4 to 27 6 km
出处
《福建地质》
2002年第4期206-210,共5页
Geology of Fujian
关键词
重力测量剖面
反演
断裂
地壳结构
福建
花岗岩
gravity survey profile, inversion, fault, crustal structure, the northeast Fujian
