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大别山花岗岩与变质岩的AFT热年代分布于96.4~41.9 Ma之间, 围限径迹长度为11.5~14.0 mm. 热年代代表岩石差异通过100℃等温面时的冷却时代, 这种差异性主要受控于NNE向区域构造. 在北淮阳与合肥盆地, 沉积岩样品(侏罗纪~早第三纪)AFT年代为128.8~62.0 Ma, 围限径迹长度为8.6~11.9 mm, 它们更多反映盆地埋藏加热的信息. 合肥盆地与大别造山带之间存在构造耦合关系. 95~90 Ma属于大别山构造推隆取代伸展热窿的转折期, 其成因可能与西太平洋域汇聚变化特性有关; 商城-麻城与郯-庐两断裂之间左旋差异走滑与构造推隆作用, 使得大别腹地伸展热窿在晚白垩世急剧萎缩. 早第三纪时期, 受西太平洋域汇聚速率急剧下降的影响, 欧亚东缘表现出广泛的拉张环境, 大别山60~40 Ma带状热异常应与这种拉张作用有关; 郯-庐热中心的冷却(70~40 Ma)要比商城-麻城热中心(60~55 Ma)缓慢, 而大别腹地热隆区(60~40 Ma)属于伸展热窿萎缩之残留. 大别山早第三纪还遭受喜马拉雅山碰撞域的远场影响, 这种影响多通过NWW向断裂来实现构造传递; 进入渐新世~中新世, 大别山冷却波动仍显现区域差异性, 它们在时间上与南海盆地扩张、关闭事件相近.
The AFT ages of the granites and metamorphic rocks in the Dabie Mountains range from 96.4 to 41.9 Ma with a circumference of 11.5 to 14.0 mm.The thermal ages represent the cooling times when the rock differences pass through the isothermal surface at 100 ℃ In the Northern Huaiyang and Hefei basins, the AFT ages of sedimentary rocks (Jurassic ~ Early Tertiary) ranged from 128.8 to 62.0 Ma, and the perimeter trails ranged from 8.6 to 11.9 mm, reflecting more of them The tectonic coupling relationship exists between the Hefei Basin and the Dabie Orogenic Belt 95-90 Ma belongs to the turning-over period of the Tethyan replaced by extensional hot holes, which may be related to the convergence and variation characteristics of the western Pacific Ocean. - The left-lateral differential slip between the Macheng and Lu-Lu faults and the tectonic thrusting effect resulted in a drastic shrinkage of the extensional hot hole in the Dabie hinterland during the Late Cretaceous. In the early Tertiary period, due to the sharp decline of the convergence rate in the western Pacific , The eastern edge of Eurasia shows a wide range of tension environment, 60 ~ 40 Ma band-shaped thermal anomalies in the Dabie Mountains should be related to this stretching effect; 郯-Lu heat center cooling (70 ~ 40 Ma) than mall - Macheng heat center 60 ~ 55 Ma) slowly, while Dabie In the hinterland Geolong area (60 ~ 40 Ma) belongs to the shrinkage of extended hot-hole. The early Tertiary in the Dabie Mountains is also affected by the far field in the collision zone of the Himalayas, and this effect is mostly achieved through NWW fault tectonic transfer; From the Mist to the Miocene to the Dabie Mountain, there are still regional differences in the cooling fluctuation. They are similar in time to the expansion and closure of the South China Sea basin.