苏北赣榆—和安湖地区地球物理特征和地热条件分析  

Analysis on geophysical characteristics and geothermal conditions in Ganyu—He’an Lake area in northern Jiangsu

作　　者：吴姗姗[1] 姚维军[1] 李琳 康涛 朱鹏 WU Shanshan;YAO Weijun;LI Lin;KANG Tao;ZHU Peng(Geological Exploration Technology Institute of Jiangsu Province,Nanjing,210049)

机构地区：[1]江苏省地质勘查技术院,南京210049

出　　处：《地质论评》2022年第4期1501-1510,共10页Geological Review

基　　金：2017年江苏省级地质勘查专项资金项目(编号:苏财建[2017]160号)的成果。

摘　　要：为了探索苏北盆地赣榆—和安湖地区地热地质条件,笔者等在了解该区地质、物探条件的基础上,采用地热地质调查、可控源音频大地电磁法(CSAMT)、氡气测量、地温测量方法进行探测,对研究区2500 m左右深度内断裂位置和展布特征进行地质物探综合解析研究。研究成果表明:调查区地热资源的分布与断裂构造关系密切,并具备形成地热的“热源、流体源、通道、热储、盖层”等基本热储水文地质条件,具有良好的勘查前景,区内北北西向断裂为地热资源勘查有利部位。本研究为苏北地区地热成因与地质结构增添了新的地质及地球物理依据,对合理开发利用地热资源具有重要指导意义。In order to explore the geothermal geological conditions in the Ganyu—He’an Lake area of the Subei Basin(Northern Jiangsu Basin), Jiangsu Province, on the basis of understanding the geological and geophysical conditions of the area, the methods of geothermal geological survey, Controlled Source Audio Magneto Telluric method(CSAMT), radon gas measurement, and geothermal measurement were used for detection. The position and distribution characteristics of faults within a depth of about 2500 m are comprehensively analyzed and studied by geophysical prospecting. The research results show that the distribution of geothermal resources in the survey area is closely related to the fault structure, and has basic thermal storage hydrogeological conditions such as “heat source, fluid source, channel, thermal storage, caprock” for the formation of geothermal, and has a good prospect area for exploration. The NWW-trending faults in the area are favorable locations for geothermal resource exploration. This study adds a new geological and geophysical basis for the geothermal genesis and geological structure of northern Jiangsu, and has important guiding significance for the rational development and utilization of geothermal resources.

关 键 词：构造 地热 可控源音频大地电磁法(CSAMT) 氡气测量 地温测量 赣榆 

分 类 号：P314[天文地球—固体地球物理学]