The Investiment Of Simulate Curve Of Luanping Basin,Chengde Basin And Hailaer Basin In Mesozoic Era

The area of Yanshan organic belt and the north of north China plate have many small basins and the subsidence curves are quite different from other basin.The goal of this work is trying to investigate this area and give a basic explanation of the structure.This investigation has chose Luanping basin,Chengde basin and Hailaer basin as examples.The classic extension mode is uniform extension mode for the forward model,but it has some drawbacks: it couldn't reflect exact extension between upper lithosphere and lower lithosphere.So this work has chose Slater mode to simulate the different fraction of upper lithosphere and lower lithosphere.For the backward,the investigation has chose back stripping to make sure the basement subsidence process.In order to make sure this process,we need to know fractions as follow: initial porosity(?),compacting factor(c),and rock density(?),strata thickness(s).Different rock have different fraction.This work is focus on the initial extension to the subsequently subsidence.The main point is try to find suitable forward model curve for the backward model curve and try to figure out the exact extension of upper lithosphere and lower lithosphere.Use this value to analysis the whole geological environment.