张家口地区的构造体系及其对地下热水的控制作用

Tectonic System and Its Geothermal Water Controlling in Zhangjiakou Area

依据地质力学理论,对张家口地区的构造体系进行了划分,并探讨其对地下热水的控制作用。张家口地区存在三个活动的构造体系,即阴山纬向构造带、祁吕—贺兰山字型构造东翼反射弧北东东构造带、新华夏系第三隆起带北北东向的岩浆岩侵入构造带,且在晚近期仍有不同程度的活动。祁吕—贺兰山字型构造东翼反射弧北东东构造带的一级构造控制了地下热水带的分布,其次级构造与新华夏系构造、东西向构造的复合交汇部位控制了地下热水点的出露位置。以祁吕—贺兰山字型构造东翼反射弧北东东向构造带为主的多构造体系复合部位,并有近期的岩浆岩分布,水质类型为SO4-Na型、富含有特殊离子氟和可溶性偏硅酸的区域性低电阻区域是寻找地下热水的有利地区。

Based on geomechanics theory,carried out tectonic system partitioning in the Zhangjiakou area,and discussed its geothermal water controlling.In the area has existed three active tectonic systems,that is the Yinshan latitudinal tectonic belt,Qilian-LuliangHelan epsilon-shaped tectonic system east limb reflex arc NEE tectonic belt,and Neocathaysian system third uplift zone NNE magmatic intrusion tectonic belt,and their later different extent activities.The primary structures of Qilian-Luliang-Helan epsilon-shaped tectonic system east limb reflex arc NEE tectonic belt have controlled geothermal water distributions.Its secondary structures and Neocathaysian system structures,EW structures composite intersection part has controlled geothermal water outcropped positions.QilianLuliang-Helan epsilon-shaped tectonic system east limb reflex arc NEE tectonic belt predominated multiple tectonic systems composite position with recent magmatic rock distributions,water type SO4-Na,specific fluorinion rich and soluble metasilicate acid region can be geothermal water prospecting beneficial areas.