对南大别双河超高压岩板榴辉岩中锆石进行了阴极发光、喇曼光谱、U- Pb和氧同位素离子探针微区分析。发现大部分锆石具有核边结构 ,其核和边有明显不同的 U ,Th,Pb含量、Th/ U比、2 0 6 Pb/ 2 38U年龄和δ1 8O值。锆石边部具有变质锆石的结构和化学特征 ,核部具有岩浆锆石向变质锆石变化的过渡特征。 17个点 U - Pb同位素分析中大多数为不一致年龄 ,由 14个正向不一致点所构成的不一致线与一致曲线的上、下交点年龄分别为 2 4 89± 2 5和 2 4 8± 16 Ma,它们代表了榴辉岩原岩形成时间和前进变质至峰期变质过程中原岩岩浆锆石重结晶和变质增生作用的时间 ,大别山变质锆石的成因是复杂的 ,它既可以是变质新生锆石 ,呈独立的颗粒或原岩岩浆锆石的增生边 ,也可以是由原岩锆石在固相或流体存在下的重结晶作用形成。不同程度的重结晶作用是超高压条件下双河榴辉岩原岩岩浆锆石发生的主要的物理化学变化 ,它导致锆石中 U、Th、Pb和Th/ U比的降低和岩浆振荡环带的消退 Cathode luminescence, Raman spectroscopy, U-Pb and oxygen isotope ion probe microanalysis of zircons from the ultra-high pressure rock eclogite in the South Dabie are carried out. Most zircons were found to have a nucleus structure with distinct U, Th, Pb contents, Th / U ratios, 206 Pb / 2 38 U ages and δ 180 values ​​at the nuclei and edges. The zircons have the structural and chemical features of metamorphic zircons on the margins of the zircons and the transitional features of zircons to metamorphic zircons in the core. Most of the 17 U-Pb isotopes were of non-uniform age. The upper and lower intersections between the inconsistent line and the consistent curve composed of 14 positive inconsistent points were 2 4 89 ± 2 5 and 2 4 8 ± 16, respectively Ma, which represent the protolith formation time of eclogite and the time of zircon recrystallization and metamorphism during the metamorphic to advancing metamorphism. The origin of the metamorphic zircon in the Dabieshan Mountains is complex, which can be both metamorphic Stones, in the form of independent grains or pristine magmatic zircons, can also be formed from the recrystallization of the original rocks in the presence of solid or fluid. The different degree of recrystallization is the main physicochemical change of the magmatic zircons in the eclogite from Shuanghe under ultra-high pressure, which leads to the decrease of U, Th, Pb and Th / U ratios and the magmatic oscillation zone The regression