【摘要】 根据对太湖地区大坝附近榴辉岩的峰期变质P-T条件的研究,以及前人对南大别榴辉岩的P-T条件的分析,同时结合榴辉岩的空间分布状态的研究,文章认为南大别变质块体自北向南可分为金刚石、柯石英榴辉岩、石英/柯石英榴辉岩和石英榴辉岩4个变质单元;变质P-T条件总体上显示逐渐降低的趋势,反映了南大别变质块体俯冲时的连续性,而现今榴辉岩的P-T分布型式则代表南大别多板片的折返状态。更多还原

【Abstract】 This study is based on the investigation into the peak P-T conditions of eclogite across the Daba area in Taihu County,the analysis of P-T conditions of eclogite across the southern Dabie terrane(SDT) which is made by the author and early investigators and the spatial distribution of eclogite.It is thought that the SDT can be divided into four metamorphic units from north to south: the diamond unit,the coesite unit,the quartz/coesite unit and the quartz unit.The metamorphic P-T conditions depress gradually,reflecting that the SDT is a coherent terrane during the subduction.The present distribution of the peak P-T conditions of eclogite indicates the status after exhumation of the SDT.更多还原