河南省地温场分布规律及成因机制分析

Analysis of the Distribution and Formation Mechanism of the Geothermal Field in Henan Province

河南省新生界地温梯度变化范围2.0℃/100m^4.0℃/100m,总体分布具有由山前至平原,地温梯度渐增,局部存在地温异常,沉积盆地内凸起区大于凹陷区的特点。不同埋深的地温,总体具有由山前向东部平原或盆地边缘向盆地内部渐增的变化规律,高温区往往位于断裂构造发育部位或构造单元的交汇部,地温场成因受所在位置、区域构造、地层组合、岩浆活动及地下水活动的密切影响。

The geothermal gradient of the Cenozoic strata in Henan Province ranges from 2.0 to 4.0℃/100 m. From the piedmont to the plain, the geothermal gradient gradually increases with the local geothermal anomalies. In the sedimentary basin, the geothermal gradient in the uplift area is more than that of the depression area. The ground temperature at different burial depths generally increases from the piedmont to the eastern plain, or from the edge of the basin to the interior of the basin. The high-temperature region is often located at the developmental location of the fault structure or the intersection of the structural unit. Based on the research of the geothermal data in Henan Province, it is concluded that the geothermal field is closely related to its location, regional structure, stratum combination, magmatic activity and groundwater activity.