In the Tai-hang and Kunlum Mountain areas

on the satellite images the structural and imagery features are shown in the lens-like compression tectonic mass

it can be summarized as following: large dimension

regularity in form of lens-like

all margin made by faults or shearing fracture zones

obvious lineament features

and uniform genesis in a stress field which is most important for those structural features.On the basis of the field survery and interpretation of remote sensing imagery

the genesis of Tai-hang Mountain under the NW-SE trend horizontal compression in Meso-zoic Era.It is significance ot those masses: 1. it may indicate the orientation of the areal compression stress

and 2. it might be imagery symbol of strong collision between the plates or of the intraplates.