库车盆地古-新近纪蒸发岩沉积对喜马拉雅构造运动期次的响应

库车盆地在古—新近纪时期发育巨厚的蒸发岩沉积，自下而上蒸发岩沉积地层主要有:古近系的库姆格列木组、苏维依组；新近系下部的吉迪克组，依据部分钻井剖面资料，可识别出5个蒸发岩沉积旋回。库姆格列木时期巨厚的蒸发岩沉积（Ⅰ1、Ⅰ2沉积旋回期）是燕山后期相对宁静的大地构造环境反映；苏维依时期蒸发岩沉积（Ⅰ3沉积旋回期）在岩性、沉积范围上发生明显改变，反映了早喜马拉雅构造环境下的不稳定沉积，吉迪克早期巨厚的盐、膏沉积（Ⅰ4沉积旋回期）及沉积区域的继续迁移则反映了早喜马拉雅构造影响仍然存在但已经减弱；吉迪克中期（Ⅰ5沉积旋回期）蒸发岩沉积结束，盐湖沉积转变为陆源碎屑岩夹薄层石膏沉积，以砂、砾为主的山麓相沉积指示了当时山体抬升、遭受剥蚀、快速堆积的沉积环境，反映了相对活动的大地构造环境，是中喜马拉雅构造运动时期的开始。可见，库车盆地的蒸发岩沉积与喜马拉雅构造运动有较好的对应关系，是大区域的构造运动在小区域范围内的地质事件反映。

Response on Sediment of Evaporate in Kuqa Basin from Paleogene to Neogene Period and Himalayan Tectonic Phase

Sediment of evaporite with gigantic thickness had been developed in Kuqa Basin from Paleogene to Neogene period,and the main stratum were composed of Kumugeliemu group,Suweiyi group(Paleogene),and Jidike group(Neogene) .Going with transformation of the water of saline lake changing from fresh water,saline water,to brine,and then to saline water,fresh water,accordingly,the sediment changes from clastic rock,gypsum,to saline rock,and then to gypsum,clastic rock,so the sediment of evaporate and clastic rock is...