中文摘要：

运用裂变径迹分析方法，针对岔路河断陷与鹿乡断陷5个样品的磷灰石进行裂变径迹分析并结合盆地模拟研究表明，伊通盆地岔路河断陷自渐新世以来曾经历两期构造热事件，发生的时间约为24．9Ma～19．1Ma和6．9Ma～4．9Ma；鹿乡断陷自渐新世以来也经历了两期构造热事件，发生的时间约为30Ma～27．8Ma和22．6Ma～11．1Ma。伊通盆地在渐新世以来发生的二次抬升剥蚀均是从中部迁移至北部。岔路河断陷和鹿乡断陷磷灰石裂变径迹与样品高程均具正相关性，其中岔路河断陷21．8Ma以来的平均隆升剥露速率为7．034×10^-2mm／y，鹿乡断陷18．9Ma以来的平均隆升剥露速率为6．033×10^-2mm／y。上述热年代学认识同时得到了盆地地球动力学背景、地层划分与对比及火山活动等方面证据的支持，说明应用磷灰石裂变径迹技术可有效地分析伊通走滑-伸展盆地的构造活动历史。

英文摘要：

The Yitong basin is an oil-bearing basin with unique property in eastern China. Using the technique of apatite fission track, the tectonic uplift history of the Yitong basin since Oligocene was discussed. Based on apatite fission track analysis for 5 samples from Luxiang fault-depression and Chaluhe fault-depression and on the basin modeling study, it was concluded that since Oligocene （36.6 Ma）,the Chaluhe fault-depression was undergone two tectonic events during 24. 9 Ma-19.1 Ma and 6.9 Ma-4.9 Ma, and the Luxiang fault-depression was also undergone two tectonic events during 30 Ma-27. 8 Ma and 22.6 Ma-11. 1 Ma. Both of the two uplift events moved from centre to north of the Yitong basin since Oligocene. Plotting of apatite fission track ages versus elevations for each sample showed a good linear positive correlation in the Chaluhe fault depression and the Luxiang fault depression in the Yitong basin. Moreover,the average apparent exhumation rate for Chaluhe fault-depression and Luxiang fault-depression was calculated as 7. 034× 10^-2 mm/y since 21.8 Ma,and 6. 033× 10^-2 mm/y since 18. 9 Ma, respectively. These preceding research results on thermochronology analysis were supported by the evidence of earth dynamics, volcanic event, stratigraphic division and correlation, indicating that the technique of apatite fission track is feasible for analyzing the tectonic uplift history of the strikeslip and tension basin similar to the Yitong basin.