The Study of the Indosinian Tectonic Faciesin the Yanshan Area
燕山地区印支期构造相研究

This paper simply reviews the study of tectonic facies and its controlling factors. Based on the study of the rock strength, the author put forward a new concept of layer strength,calculate the layer strength of pre_Mesozoic strata and the temperature and pressure of the Indosinian deformation in the Yanshan area, systimatically divide the Indosinian tectonic facies and set up the texture of the Indosinian tectonic facies in the Yanshan area. It is suggested that flexural flow facies is the main tectonic facies in the Yanshan area during the Indosinian movement.