摘要
利用准噶尔盆地 1 96口井的温度资料及 90块岩石样品热导率的测定 ,计算了 35个大地热流数据 ,编制了盆地不同深度现今地温等值线图 .研究结果表明 ,准噶尔盆地现今为低地温、低大地热流的冷盆 ,盆地的现今地温梯度平均为 2 1 2℃ /km ,大地热流密度平均为42 3mW/m2 .热流的分布表现为隆起高、坳陷低的特征 .影响地温场的主要因素包括盆地的深部结构、盆地演化、盆地基底构造形态、地下水活动和沉积层的放射性生热等 .
Based on the temperature data of 196 wells and measurements of 90 thermal conductivity of rocks in Junggar Basin, 35 terrestrial heat flow values are caculated. The results show that the Junggar Basin is a relatively “cold basin” now, with lower temperature and lower heat flow. Mean values of temperature gradient and heat flow are about 21.2℃/km and 42.3mW/m 2, respectively. Higher heat flow in the uplift and lower in the depression are observed. The distribution of heat flow and temperature is affected by hydrothermal circulation, structure of basement and evolution of the Junggar basin, as well as radioactive heat production in sedimentary rocks. [
出处
《地球物理学报》
SCIE
EI
CAS
CSCD
北大核心
2000年第6期771-779,共9页
Chinese Journal of Geophysics
基金
中国石油天然气集团公司重点科技攻关项目(970211-02)
关键词
准噶尔盆地
地温场
地温梯度
热导率
大地热流
Junggar basin
Geothermal field
Temperature gradient
Thermal conductivity
Heat flow
