地幔热柱演化及其地热效应——华北地热异常的深部构造背景

本文在概略分析了华北盆地地热异常特征、地热异常展布规律及成热控制因素的基础上,提出华北巨大地幔亚热柱的上隆是华北地壳裂解、断陷形成与发展、以及华北地热场形成与演化的主要动力(热能)来源,并进而指出了华北断陷中二级隆坳导致的地热梯度分带是构造控热的表现形式。

The Mantle Plume Evolution and Its Geothermal Effect--Deep Tectonic Setting of Geothermal Anomaly in North China

Based on an analysis of characteristics and distribution regularities of geothermal anomalies as well as controlling factors of geothermal resources in north China basin,the authors hold that the uplifting of giant submantle plume is the main dynamic (thermal energy) source responsible for the crustal splitting, the formation and development of faulted depressions,and the evolution of geothermal field in north China. It is considered that the second-order uplifts and depressions in north China fault basin that led to geothermal gradient zoning are forms of tectonic control of geothermal resources.