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一、地热地质概况华北平原是新华夏系第二沉降带上一个中、新生代断陷盆地,晚侏罗世开始萌芽发育,并定型于早白垩世,第三纪时继续发展。盆地由太古界、元古界、古生界、中生界地层组成基底,新生界地层组成盖层。主要构造由二、三级的断裂和隆起坳陷、凸起凹陷组成,全区有正负向构造91个,其中凸起45个,凹陷46个(图1)。主要断裂有太行山山前断裂、涿县—宝坻—乐亭断裂、沧县断裂、聊兰断裂、埕西断裂、埕南断裂、齐河—广饶
Geothermal Overview North China Plain is the second subsidence of the Neo-Huaxia Plain, which took on a Mesozoic-Cenozoic rift basin. Late Jurassic began to germinate and formed in the Early Cretaceous and continued to develop in the Tertiary. The basin is composed of Archean, Proterozoic, Paleozoic and Mesozoic strata, and the Cenozoic strata constitutes the caprock. The main structure consists of two or three levels of faults and uplift depressions and raised depressions. There are 91 positive and negative structures in the region, of which 45 are raised and 46 depressions (Fig. 1). The main faults are the Taihangshan piedmont fault, the Yixian-Baodi-Laoting fault, the Cangxian fault, the Liaolan fault, the Xisi fault, the Taonan fault, the Qihe-Guangrao fault