From the borehole temperature log and thermal conductivity measurements of core samples from the Well Dangshen 3 in the Dangyang synclinorium, Jianghan Basin, the present temperature gradient and heat flow were 20～24 ℃/km and 52 mW/m2, indicating the stable tectonic nature of the Yangtze craton. Based on 7 apatite fission track data and a number of vitrinite reflectance data, the thermal history reconstruction showed that the basin experienced the earlier low heat flow (52 mW/m2) and limited erosion (50～200 m) during the pre-Indosinian period, higher heat flow (~80mW/m2) in the Indosinian orogeny and low heat flow (50～60 mW/m2) and significant erosion (1 100～2 400 m) during the Yanshanian and Himalayan periods, which was related with the basin and the regional tectono-thermal evolution. Controlled by the deposition and erosion as well as the basin thermal evolution, the hydrocarbon generation was of multi-phases.
Guo Tonglou,Li Guoxiong,Zeng Qingli. THERMAL HISTORY RECONSTRUCTION FOR WELL DANGSHEN 3 IN THE DANGYANG SYNCLINORIUM, JIANGHAN BASIN AND ITS EXPLORATION IMPLICATIONS[J]. Chinese Journal of Geology, 2005, (4): 570-578.