综合物探技术在石家庄凹陷地热勘查中的应用

在岩石密度、磁性、电性综合分析的基础上,提出用重力资料反演广义新生界基底,利用航磁资料研究太古宇、下元古界结晶基底的研究思路.根据大地电磁测深资料,对新生界、中生界和古生界垂向分布进行了深入研究,结合重力剖面反演进一步予以证实.工作结果在石家庄凹陷内发现槐底低凸起存在,是寻找寒武系、奥陶系灰岩类型的地热远景有利地区;发现石家庄市区内存在南北、东西2个新生界深洼槽,分别为石家庄火车站至永壁深洼槽和永壁至二十里铺深洼槽.

THE APPLICATION OF INTEGRATED GEOPHYSICAL TECHNIQUE TO GEOTHERMAL PROSPECTING IN SHIJIAZHUANG DEPRESSION

on a synthetic study of density as well as magnetic and electric properties of rocks,the authors hold that the general Cenozic basement can be determined by gravity anomaly inversion,and that Archean and lower Proterozoic crystalline basements can be located with the help of aeromagnetic anomalies.A detailed study was carried out on the vertical distribution of Cenozic,Mesozoic and Paleozoic strata by using MT information.A study of Shijiazhuang depression revealed a low uplift,which is favorable for geothermal prospecting in Cambrian and Ordovician limestone.Two deep depressions in NS and EW directions were also detected in Shijiazhuang City.One is from the Railway Station to Yongbi and the other is from Yongbi to Ershilipu.