运用裂变径迹年代学方法对川南马边地区断裂分布带的磷灰石进行分析,取得了测试样品的表观年龄.并且运用AFTSolve程序对数据进行了热历史模拟,获得了样品的热演化史.研究结果表明:川南马边地区在距今25Ma以来相当长的时间内都处于一个相对稳定的阶段,直到距今3Ma.与青藏高原内部及其他边缘地区相比,研究区在距今25~3Ma的阶段中对青藏高原的多次快速隆升没有明显响应.马边地区的利店断裂上最晚一次与断裂活动相关的热事件(8Ma左右)晚于位于它西侧的峨边断裂(18~15Ma),在一定程度上反映了马边地区断裂活动在空间上由西向东迁移的演化特征.该区最晚一次大规模的构造抬升事件发生在大约距今3Ma左右至今.与鲜水河断裂带相比,马边地区更靠近东侧,快速冷却的时间也晚于鲜水河断裂带南东段(3.6~3.46Ma),这在一定程度上支持了青藏高原东缘晚新生代幕式抬升和分步向外扩展的观点. The fission track dating method was used to analyze the apatite in the fault distribution zone in the Mabian area, Sichuan Province, and the apparent age of the test sample was obtained. The thermal history of the sample was obtained by using the AFTSolve program to obtain the thermal history The results show that the Mabian area in southern Sichuan Province was in a relatively stable stage for a long time since 25 Ma, up to now, In the stage of 3Ma, there was no obvious response to many rapid uplift of the Qinghai-Tibet Plateau. The latest thermal event related to the fault activity (around 8Ma) on the Lidian Fault in the Mabian area was later than the Ebian fault located on the west side of it 18 ~ 15Ma), to a certain extent, reflect the evolutionary characteristics of the spatiotemporal migration of the Mabian region from west to east. The latest large-scale tectonic uplift event in this area occurred around 3Ma so far. Compared with the river fault, the Mabian area is closer to the east and the rapid cooling time is later than that of the south segment of the Xianshuihe fault (3.6 ~ 3.46Ma), which to some extent supports the late Cenozoic in the eastern margin of the Qinghai-Tibet Plateau Curtain L and outwardly extended stepwise views.