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近２０万年以来，中国北方半干旱区的构造活动性是非常明显的。在这一地区发现了许多第四纪晚期的活动构造，例如，正断层、逆断层、走滑断层、褶皱、拗陷、隆起、古地震构造、火山构造、构造地貌等。在构造地块中部，垂直运动的最大幅度大约是８８—１３２ｍ，其平均运动速率约０．４４—０．６６ｍｍ／ａ；而在地块周边的活动构造带，则最大垂直运动幅度为２１０—３４３ｍ，平均运动速率为１．０５—１．７７ｍｍ／ａ。构造运动的强度和速率是不断增大的。主压应力表现为ＮＥ－ＳＷ和近ＥＷ方向。自２００ｋａＢＰ以来，构造活动可以划分为６个阶段，其年龄分别为２００、１００—７０、５０—３０、１０—７、０．７和０．３ｋａＢＰ。其中１００—７０ｋａＢＰ和５０—３０ｋａＢＰ的两次运动是第四纪晚期最强烈的两次运动。中国北方半干旱区的构造演化是与青藏高原的阶段性隆升密切相关的。构造活化是中国北方干旱－半干旱区形成演化的重要控制因素之一
In the past 200,000 years, the tectonic activity of the semiarid areas in northern China is very obvious. Many late Quaternary tectonic activities have been discovered in this area, for example, normal faults, reverse faults, strike-slip faults, folds, depressions, uplifts, paleoearthquakes, volcanic structures and tectonic landforms. In the middle part of the tectonic block, the maximum amplitude of vertical motion is about 88-132m, and the average velocity is about 0.44-0.66mm / a. In the active tectonic belt around the block, the maximum vertical motion amplitude is 210- 343m, the average rate of movement of 1.05-1.77mm / a. The intensity and rate of tectonic movement are constantly increasing. The principal compressive stresses are shown in NE-SW and near-EW directions. Tectonic activities can be divided into six stages since 200kaBP, with ages of 200, 100-70, 50-30, 10-7, 0.7 and 0.3kaBP, respectively. Among them, 100-70kaBP and 50-30kaBP are the two strongest motions in the late Quaternary. The tectonic evolution of semiarid regions in northern China is closely related to the stage uplift of the Tibetan Plateau. Tectonic activation is one of the important controlling factors in the formation and evolution of arid-semi-arid regions in northern China