【摘要】 在分析研究前人资料和成果的基础上,结合野外地质调查和室内研究,从新构造应力场、地震、形变、地幔对流等方面对广西及其邻区的现今构造应力场进行了系统分析和研究,并用数值模拟方法对所得结果进行了验证。认为:广西及其邻区现今构造应力场的主压应力方向在桂西北和桂北为NW向,在桂东和沿海一带为EW向,这两种应力在桂中附近汇合形成过渡构造;受海南地幔热柱的影响,北部湾和雷琼地区向南拉张,形成SN向主张应力。更多还原

【Abstract】 On the basis of the predecessors’ data and study results,we systematically analyzed the current tectonic stress field in Guangxi and vicinity from the neotectonic stress field,earthquakes,crustal deformation and mantle convection combining with the field investigation and lab data,and tested the result with numerical modeling.In Guangxi and vicinity,the principal compressive stress of the current tectonic stress field is in NW direction in Northwest and North Guangxi,and in EW in East Guangxi and littoral,and they converge in Central Guangxi nearby;influenced by the Hainan thermal mantle plume,the Baibuwan and Leiqiong areas are stretched toward south by a principal tensional stress in SN direction.更多还原