云南大地热流及其大地构造意义  

TERRESTRIAL HEAT FLOW AND ITS TECTONIC SIGNIFICANCE IN YUNNAN, CHINA

作　　者：徐青[1] 汪缉安[2] 汪集旸[2] 张文仁[2] 

机构地区：[1]中南工业大学,长沙410083 [2]中国科学院地质研究所

出　　处：《大地构造与成矿学》1992年第3期285-299,共15页Geotectonica et Metallogenia

基　　金：国家自然科学基金项目<滇西地区古特提斯构造演化>地热

摘　　要：本文在云南大量钻孔地温测量和岩石熱导事测定基础上.得到基本上能覆盖全区,高质量的大地热流数据29个,在地形起伏较大的地区对测定热流值进行了地形校正,按地质特点分出:1)腾冲地洼区高热流区,平均值为93.6mW/m^2;2)滇西地洼区中热流区,平均值为59.2mW/m^2;3)川滇地洼系昆明地洼区高热流区,热流平均值为85.4mW/m^2;4)巴颜额拉地洼区丽江-洱源区,平均热流为80mW/m^2;5)滇东南地洼区低热流区.热流值变化在37-70mW/m^2.其中半数在50mw/m^2以下.总起来看云南地区平均热流值较高,热流数据离散度大,这与本区地质特点相一致.In this paper, 29 reliable heat flow data in Yunnan area, China, are obtained, based on a number of borehole geotemperature logging, thermal conductivity determination on rock-sample, The terrain correction on heat flow values has been conducted where topography is rugged. According to geological characteristics and heat flow values, the area can be divided into the following subareas: 1)Tengchong diwa region, west of Nujiang River, with high heat flow (93.6 mW/m^2 in average); 2) Western Yunnan diwa subarea, with moderate heat flow (59.2mW/m^2 in average); 3) Kunming region of Sichuan-Yunnan diwa system, Southernmost part of North-South diwa area, with high heat flow 85.4 mW/m^2 in average; 4) diwa region around Lijiang-Eryuan with average heat flow 80mW/m^2, 5) the subarea of Southeast Yunnan with low heat flow ranging from 37 to 70mW/m^2, half of which are smaller than 50mW/m^2. In summary, the heat flow values are relatively high and heat flow data are variable, which corresponds to the geological characteristics of the study area.

关 键 词：地热 大地热流 大地构造 

分 类 号：P314.2[天文地球—固体地球物理学]