地质与勘探2018，Vol.54Issue(1)：166-173,8.
内蒙古宁城地热资源的构造制约与勘查标志
Tectonic Constraints on the Underground Thermal-Water Resources and Prospecting Indicators in the Ningcheng Area,Inner Mongolia
摘要
Abstract
The Ningcheng geothermal area of Inner Mongolia is located in the northern margin of the North China plate,which is an important ore belt and ore field in northern China. This work has made an analysis of the thermal-controlled tectonic system in the Ningcheng area,focusing on the relation-ship between the thermal-controlling fault zones of different scales,including the Nenjiang-Baliqian,Heilihe,and Damiao-Jinshan faults. The control-ling effects of the main tectonic system and its composition on the geothermal distribution of different systems are elucidated. The NW-trending faults in the south segment of the Nenjiang-Balikan fault are nearly 40° away from the SE direction,and are bent as the"S" arc-like after the deflection. Geothermal anomalies occur at the localities with stress concentration on the west side of the transition point where deeply buried alteration zones are present. At the same time,the successional reconstruction of the NS-trending Reshuizheng-Dayingzi fault-fold belt made the fault extend to the south and north flanks,provi-ding channels for deep magmatic intrusion and thermal energy rise,which may be the main structural factors of geothermal formation. Due to the intensifica-tion of magmatic intrusion activity,the increase of geothermal area resulted in the movement of the deep heat source of the crust. The groundwater heated up in the deep cycle and along the fault channel under the hydrostatic pressure of the high-altitude recharge belt,forming geothermal fluid.关键词
地热资源/构造制约/对流型地热/勘查标志/宁城/内蒙古Key words
underground thermal-water resources/tectonic constraints/convective geothermal resources/prospecting indicator/Ningcheng/Inner Mongolia分类
天文与地球科学引用本文复制引用
闫岩,赵国春,汪旭,邸英龙,赖亚,程永志,于婳,郭琪..内蒙古宁城地热资源的构造制约与勘查标志[J].地质与勘探,2018,54(1):166-173,8.基金项目
中国地质调查局"华北地区古生代构造岩浆热事件性质及资源效应综合研究"项目(编号:1212011121072)资助. （编号:1212011121072）
