鲁西南地区新生代盆山耦合作用的裂变径迹证据

Fission Track Evidence of Cenozoic Basin-Mountain Coupling of Southwest Shandong

对位于莱芜盆地东缘附近文祖断裂东西两侧的8个样品进行磷灰石裂变径迹(AFT)分析表明:样品AFT年龄均属于同一组分。对比山体和盆地样品的AFT年龄可知,山体样品(L3除外)的AFT年龄整体上均小于盆地中样品的AFT年龄。这说明,盆地中样品中的磷灰石是附近山体早期隆升并被剥蚀、搬运沉积到盆地中的,其AFT年龄代表的是山体早期隆升的年龄。这一结果很好地揭示了莱芜盆地与附近隆起区新生代的盆山耦合关系。

Eight apatite Laiwu Basin, Southwest samples were collected from Shandong, China. All the sam through the analysis of apatite fission AFT ages of the samples （except L3） samples from basin by comparison, w eroded and transported into the basin, represent the time of earlier uplift of Wenzu fault zone pies present one co near mpon Eastern ent ages track. There is an obvious trend that most of the from mountains are smaller than the ages of the hich indicate the apatite in the basin samples was and the AFT ages which recorded by the apatite mountains. The study reveals the relation of the Cenozoic basin-mountain coupling.