中国大陆主要地质构造单元岩石圈地热特征 |
点此下载全文 |
引用本文:汪洋,汪集旸,熊亮萍,邓晋福.2001.中国大陆主要地质构造单元岩石圈地热特征[J].地球学报,22(1):17-22. |
DOI: |
摘要点击次数: 14476 |
全文下载次数: 8183 |
|
基金项目:国家自然科学基金重点项目(No.49733110),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 |
|
中文摘要:根据中国大陆的800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。 |
中文关键词:大地热流 地壳生热率 有效弹性层厚度 中国大陆 |
|
Lithospheric Geothermics of Major Geotectonic Units in China Mainland |
|
|
Abstract: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. |
keywords:heat flow heat production rate of the crust effective elastic thickness China Mainland |
查看全文 查看/发表评论 下载PDF阅读器 |