Borehole Temperature Logging and Terrestrial Heat - Flow Distribution in Jianghan Basin

• 责任者：Xu Ming (Institute of Geology and Geophysics ; Chinese Academy of Science ; Beijing 100029 ; China) ; Zhao Ping
• 刊名：Chinese Journal of Geology
• 出版年：2010
• 卷期：45(1)
• 关键词：地温梯度 ; geothermal gradient ; 热流 ; heat flow ; 江汉平原 ; Jianghan Plain
• 页码：p.317-323
• 图表：4 illus., 2 tables, 15 refs.
• 分类号：0400
• issnNo：ISSN0563-5020
• isbnNo：CN11-1937/P

Based on the newly obtained borehole steady temperature data from 9 holes together with thermal conductivities of 124 core samples，the authors analyze the distribution of geotemperature and terrestrial heat flow in Jianghan Basin. The present temperature gradients vary from 28.36 to 39.32 ℃/km，lower temperature gradients is observed in the Cenozoic Basin margin and higher gradients are obtained in the Cenozoic Basin. The determined thermal conductivity values vary from 0.882 to 6.78 W/m·K and the calculated heat flow values in Jianghan Basin range from 41.9 to 60.9 mW/m²，with a average of 52.3 mW/m². It shows that the influence of tectono-thermal event before Cenozoic in Jianghan Basin has faded away，and the basin has cooled down.