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选择近期在大别山及苏鲁地区各类变质岩地层中采用不同测试方法所获得的较为精确的同位素年龄数据共４５个进行分析，得到以下几点主要认识：１）扬子板块被动陆缘形成于８００～７００ＭａＢ．Ｐ．之间；２）根据原岩及折返动力学机制分析，南大别与苏鲁超高压、高压变质岩石是扬子板块被动陆缘（大陆隆）物质残余，在２３２～２２１ＭａＢ．Ｐ．伴随扬子板块被动陆缘俯冲到华北板块之下最大限度时在１００ｋｍ上地幔软流圈深度发生超高压变质作用，同时在较浅的构造层次上发生高压及角闪岩相变质作用。这些超高压、高压变质岩石在２２０ＭａＢ．Ｐ．开始折返，然后于２０６～１７８ＭａＢ．Ｐ．快速完成角闪岩相退变质作用；３）北大别高温变质岛弧在１３３～１２２ＭａＢ．Ｐ．伴随白垩纪花岗岩侵入体活动快速抬升，平均冷却速率达３５°Ｃ·Ｍａ－１；４）北大别高温变质岛弧与南大别超高压变质陆隆在１２０～１１０ＭａＢ．Ｐ．停止相对运动，归并为一体。
This paper chooses 45 relatively accurate isotope age data obtained from different test methods in various types of metamorphic rock strata in the Dabie Mountains and Sulu areas recently, and obtains the following main points: 1) The passive continental margin of the Yangtze plate was formed at 800 ~ 700MaB. P. ; 2) According to the analysis of the original rock and the mechanism of reentry kinematics, the ultra-high pressure and high-pressure metamorphic rocks in the South Dabie and Sulu are the residuals of the passive continental margin of the Yangtze Plate (232 ~ 221MaB). P. With the subduction of the passive continental margin of the Yangtze plate to the maximum under the North China plate, the ultrahigh-pressure metamorphism occurred along the mantle asthenosphere at a depth of 100 km and at the same time the high-pressure and amphibolite facies metamorphism occurred at the shallow structural level. These ultra-high pressure, high-pressure metamorphic rocks at 220MaB. P. Begin to turn back, then at 206 ~ 178MaB. P. Rapid completion of amphibolite facies metamorphism; 3) North Dabie high temperature metamorphosed island arc at 133 ~ 122MaB. P. With the Cretaceous granite intrusive activity rapidly uplifted, the average cooling rate of 35 ° C · Ma-1; 4) North Dabie high temperature metamorphic island arc and South Dabie ultrahigh-pressure metamorphic Lu Long at 120 ~ 110MaB. P. Stop relative movement, merge into one.