这样高的古地温梯度肯定与构造热事件有关。
应用镜质体反射率法恢复了古地温及古地温梯度。
This paper restores the palaeogeotherm and palaeogeothermal gradient in Songliao Basin using several methods.
结果表明：滨北地区白垩纪古地温梯度高于现今地温梯度，古地温梯度在晚白垩世为4。
The simulated results are as follows: the paleo-geothermal gradient was higher than the current, it was about 4.
中生代晚期地温梯度高，是古生界碳酸盐岩及煤系地层的主要生气期和运移期。
The Late Mesozoic characterized by higher temperature gradient is main period of gas generation and migration of Paleozoic coal series and carbonates.
中生代晚期地温梯度高，是古生界碳酸盐岩及煤系地层的主要生气期和运移期。
The Late Mesozoic characterized by higher temperature gradient is main period of gas generation and migration of Paleozoic coal series and carbonates.
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