普鲁火山

普鲁火山

　　介 绍　 　     普鲁火山实为火山熔岩层，来自于南部的昆仑山，活动时间约143万年前。火山熔岩层分布于克里雅河中游两侧的高阶地上，火山熔岩分两层，下层厚7米，为火山集块岩和致密块状熔岩，覆盖在砂砾上，接触面有砾石层被烘烤痕迹；两层间夹12.3米厚的砾石层，上层熔岩厚20米，为集块岩、致密块状岩和气孔状岩石。

　　      上、下层熔岩，均形成于第四纪早更新世，属不同时期的两次火山喷发的玄武岩（粗安岩），玄武岩组成阶地陡崖，形似众多奇异造型的怪兽傲视远方，蔚为壮观。火山岩覆盖于河流6级阶地的砂砾石层上，其上覆盖风砂质黄土层。两次火山活动都在南部的昆仑山高山地带，且规模巨大，对研究青藏高原及昆仑山的形成及环境演化意义重大。普鲁火山目前仍处于原始的保存状态。     　   

　　 新疆和田

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