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The age of Xiannu Mountain fracture belt in Three-Gorge region -a fission track study

机译:三峡地区仙女山断裂带年龄-裂变径迹研究

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摘要

Apatite was separated from fault-clay, fracture-cliff rock and fracture wall rock, which were collected from Huangkou fracture north to Xiannu Mountain lying 20 km southwest to Three Gorge Dam Project-Sandouping dam. The fission tract characters and their length variations of Apatite show that Xiannu Mountain fracture belt was formed at(0.7±0.04)Ma, but its wall rock At(25.31±2.8)Ma. this result and previous studies show that no activity has happened since The Holocene, and the Three Gorges Dam Project is not affected by activity of the Xiannu Moun- Tain fracture belt.
机译:磷灰石与断层粘土,裂隙悬崖岩石和裂隙壁岩石分离,这些岩石从黄口断裂北至仙姑山西南20公里处的三女坝—三斗坪大坝采集。磷灰石的裂变特征及其长度变化表明仙女山断裂带形成于(0.7±0.04)Ma,而围岩形成于(25.31±2.8)Ma。这个结果和以前的研究表明,自全新世以来没有活动,而且三峡大坝工程不受仙女山-泰因断裂带活动的影响。

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