【摘要】 大村韧性变形带主要由糜棱岩系列岩石组成,其强应变带和弱变形域分带明显。发育线理、面理、褶皱构造。变形差应力为34.1～62.2 MPa。微量元素地球化学特征表明Au,Ag,Pb,Zn和As等亲硫元素组合于构造带中贫化,Cu含量变化不明显,Sb,Sn和Bi等“中高温”元素则富集,反映了构造带大致形成于中高温环境,与矿物变形相分析一致。更多还原

【Abstract】 The Dacun ductile deformable zone consists mainly of mylonites with obvious zoning of strong and weak strain bands and widespread lineation,foliation,fold structure. The differential stress for deformation is 34. 1 - 62. 2 MPa. Trace-element geochemical characteristics indicate that sulphophile elements (Au, Ag,Pb,Zn, As) are depleted and mesothermal and hyperthermal elements (Sb,Sn,Bi) enriched in the structure zone, inflecting that the structure zone was formed in a mesothermal and hyperthermal environment,which is consistent with the deformation temperature of minerals.更多还原