摘要
根据中国大陆的 80 0余个大地热流值数据 ,作者研究了中国大陆主要地质构造单元的地热特征。中国大陆热流的空间分布以及其他岩石圈热状态参数均表现出明显的横向变化 ;这些特征源于太平洋板块俯冲和印度 亚洲碰撞导致的新生代构造热活动。中国大陆各构造单元的地壳生热率亦表现出横向非均匀性 ,这意味着各构造单元的地壳平均成分存在显著的横向变化。研究表明 ,各主要构造单元的地壳力学强度和地震活动性均受其地热特征的影响。
Lithospheric geothermal characteristics of major geotectonic units in China were studied on the basis of over 800 heat flow data from China Mainland. The spatial pattern of heat flow and other thermal parameters of lithosphere show obvious lateral variations, which originated from the Cenozoic tectonothermal activities related to the India-Asia collision and the subduction of the Pacific Plate. The average heat production rate of the crust also exhibits lateral heterogeneity among geotectonic units, implying significant lateral variation of bulk composition of the crust in China Mainland. The mechanical strength of the crust and the seismicity of geotectonic units were strongly affected by geothermal characteristics of the units.
出处
《地球学报》
EI
CAS
CSCD
北大核心
2001年第1期17-22,共6页
Acta Geoscientica Sinica
基金
国家自然科学基金重点项目! (No .4973 3 110 )
中国博士后科学基金
人事部博士后经费资助
中国地质调查局国土资源大调查地质调
关键词
中国大陆
地质构造单元
岩石圈
地热特征
大地热流
heat flow heat production rate of the crust effective elastic thickness China Mainland
