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利用南黄海南部盆地现有钻井测温资料及岩石样品热导率的测定,计算了8口井的大地热流值,编制了盆地不同深度现今地温趋势图。研究结果表明:南黄海南部盆地现今地温梯度介于24.7～32℃/km之间,平均为28.6℃/km。大地热流介于65～74 mW/m~2之间,平均为69 mW/m~2。该数据填补了南黄海南部地区热流测量的空白。热史恢复结果表明,南黄海南部盆地从古生代到中生代古热流持续增高,在中生代末经历最高古热流,在新生代则开始冷却。构造沉降史分析显示,南黄海南部盆地经历了至少4次快速沉降与缓慢沉降的更迭,显示了较为强烈和频繁的构造活动且性质复杂。
Based on the existing data of drilling temperature and the thermal conductivity of rock samples in the southern part of the southern Yellow Sea, the geothermal flow values of 8 wells were calculated and the current geothermal trends of different depths in the basin were prepared. The results show that the present geothermal gradient in southern southern Yellow Sea ranges from 24.7 ℃ to 32 ℃ / km with an average of 28.6 ℃ / km. The earth heat flow is between 65 and 74 mW / m ~ 2, with an average of 69 mW / m ~ 2. This data fills the gap in heat flow measurements in the southern South Yellow Sea. The results of the thermal history restoration show that the paleotemperature flow in the southern South Yellow Sea from the Paleozoic to the Mesozoic continued to increase, experiencing the highest paleokraft in the late Mesozoic, and cooled in the Cenozoic. Tectonic subsidence history analysis shows that the southern South Yellow Sea basin experienced at least four rapid subsidence and slow subsidence changes, showing a more intense and frequent tectonic activities and complex nature.