论文部分内容阅读
在大地热流密度分布的基础上，研究了塔里木盆地中库尔勒－若羌和阿克苏－叶城两条剖面岩石层热结构特征．由岩石层Ｐ波速度分布转换成生热率剖面，用二维数值模型获得了岩石层热结构和热状态特征．结果表明，塔里木盆地壳幔边界温度的高低与其埋深密切相关．居里等温面深度大，地幔热流密度较低．岩石层厚度变化与其新生代期间挠曲过程密切相关．在岩石层温度分布基础上，确定了深部脆－韧性过渡带深度和岩石层屈服强度，表明塔里木盆地岩石层相对较冷，且具有刚性的地球动力学特征．
Based on the distribution of heat flux in the earth, the thermal structures of the Kureler-Ruqiang and Aksu-Yecheng lithospheric layers in the Tarim Basin were studied. The P-wave velocity distribution in the lithosphere was converted into a heat-generating rate profile, and the thermal structure and thermal characteristics of the lithosphere were obtained by a two-dimensional numerical model. The results show that the temperature of the crust and mantle in the Tarim Basin is closely related to its burial depth. Curie isothermal depth, mantle heat flux density is low. The change of lithospheric thickness is closely related to the deflection process during the Cenozoic. Based on the temperature distribution in the lithosphere, the depth of the deep brittle-ductile transition zone and the yield strength of the lithosphere are determined, indicating that the lithosphere in the Tarim Basin is relatively cold and has a rigid geodynamical character.