The Yanshanian movement is the most impotent tectonic movement of the North China Massif in phanerozoic. It may be divided into three stages: the early, middle and late stage, of which there were five episodes. In the early stage of the Yanshanian movement the North China Massif gradually fragmented and East-West trending fracture zones formed, accompanied by the intrusion and eruption of intermediate-basic magmas. The middle stage was an abrupt turn in the development of the North China Massif. During this stage, the Massif further dismembered and the NNE trending fracture zones, of which the intensive activities controlled intrusion and eruption of a great volume of intermediate-acidic magmas, formed. During the late stage the characteristics of the tectonic activities inherited those in the middle stage. The Yanshanian movement shows following characteristics, i.e. pulsation and migration of the tectonic activity and variation of the main compressive (or tensile) stress in the tectonic stress field with time. The mechanism of the tectonic activity of the Yanshanian movement was mainly controlled by the rotation, the general expansion trend of the Earth and gravitation isostasy.
聂宗笙. 1985, 华北地区的燕山运动. 地质科学, (4): 320-333.
Nie Zongsheng. THE YANSHANIAN MOVEMENT IN THE NORTH CHINA[J]. Chinese Journal of Geology, 1985, (4): 320-333.