Heat flow in the continental area of China: a new data set
Heat flow in the continental area of China: a new data set
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DOI：
10.1016/s0012-821x(00)00126-6
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发表时间：
2000-06
影响因子：
5.3
通讯作者：
Shengbiao Hu;Lijuan He;Jiyang Wang
中科院分区：
文献类型：
--
作者：
Shengbiao Hu;Lijuan He;Jiyang Wang
利用已发表的资料（截至1999年）和以前未发表的资料，编制了中国大陆地区的热流资料汇编。该数据集由来自不同地点的862个观测结果组成。在中国大陆地区，热流值范围为23 - 319 mW/m2，平均值为63±24.2 mW/m2。如果排除与局部热液系统相关的非传导值，则代表性平均热流为61±15.5 mW/m2（n=823），相关范围为30-140 mW/m2。每个特定的亚构造省的热流分析表明，在一个构造省内的可辨别的趋势。基于新数据集的地表热流与地质年龄的关系表明，地表热流对最近一次构造活动的依赖性明显大于造山带的年龄。中国大陆总体热流格局呈现东部和西南部高、中部和西北部低的特点，并在很大程度上受中新生代岩石圈构造演化的控制。在热流图象中可以清楚地看到新生代印度板块与欧亚板块的碰撞和岩石圈的增厚，以及中国东部晚中生代岩石圈的减薄和火山岩浆活动。
A new compilation of heat flow data for the continental area of China has been constructed using both published data (up to 1999) as well as previously unpublished data. The data set is composed of 862 observations from different sites. Within the continental area of China, heat flow values range from 23 to 319 mW/m2, with a mean of 63±24.2 mW/m2. If non-conductive values related to local hydrothermal systems are excluded, the representative average heat flow is 61±15.5 mW/m2(n=823), with an associated range of 30–140 mW/m2. Heat flow analysis for each specific sub-tectonic province shows discernible trends within a tectonic province. The relationships between the heat flow and geological ages based on this new dataset indicate that surface heat flow is obviously more dependent on the last tectonothermal activity than the age of the orogeny. The overall heat flow pattern exhibits high values in the east and in the southwest, and low in the center and northwest parts of the continental area of China, and appears to be dominated largely by the Meso-Cenozoic tectonothermal evolution of the lithosphere. The Cenozoic collision between the Indian and Eurasian plates, and the subsequent thickening of the lithosphere; and the lithospheric thinning and volcano-magmatic activities during the Late Mesozoic in East China; can be seen clearly in the heat flow pattern.