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渤海盆地大地热流测量和利用磷灰石裂变径迹及镜质体反射率数据进行的盆地热史恢复结果表明:盆地现今热流值为50—75mW/m2,背景热流值达63.6mW/m2,而早第三纪砂河街组和东营组沉积时(25—50Ma)盆地古热流值为70—90mW/m2.盆地构造沉降史分析显示,盆地(含辽东湾地区和渤海地区)经历了早期的裂谷阶段(25一扣Ma)和后期的热沉降阶段(25—0Ma),其中早期的裂谷阶段包含了两个裂谷亚旋回.渤海盆地内的后期热沉降叠加了12Ma以来由高密度地幔及岩石圈冷却诱发的快速均衡沉降.渤海盆地现今较低的大地热流值和较高的古热流及典型的裂谷型构造沉降样式等支持了渤海盆地板内裂谷盆地的大地构造属性并为渤海盆地构造一热演化提供了重要认识.
The results of geothermal heat flow measurement in the Bohai Basin and thermal history restoration using apatite fission track and vitrinite reflectance data show that the current heat flow in the basin is 50-75 mW / m2, the background heat flux is 63.6 mW / m2, However, the Paleogene anomalies of 70-90 mW / m 2 were observed during the deposition of the Early Triassic Shahejie Formation and Dongying Formation (25-50 Ma). Analysis of basin tectonic subsidence shows that the basin (including Liaodong Bay and Bohai region) experienced the early rift phase (25-30 Ma) and the late thermal phase (25-0 Ma), of which the early rift phase included Two Rift Sub-Cycles. The post-heat deposition in the Bohai Basin superimposed the rapid equilibrium settlement induced by the high-density mantle and lithospheric cooling since 12 Ma. The current low geothermal heat flow values, high paleokraft heat flow and typical rift-type tectonic subsidence patterns in the Bohai Basin support the tectonic attributes of the intraplate rift basins in the Bohai Basin and provide an important understanding of tectonic-thermal evolution in the Bohai Basin .