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The Daqingshan Piedmont Fault (DPF) is one of the major active normal faults in the Hetao depression zone in the&#13; northern part of Ordos Block, North China. It extends in NEE direction along the Daqingshan piedmont zone in the&#13; eastern part of the depression, dipping to the south, for a length of 223 km. The fault formed in the Eocene and underwent&#13; strong movement during the Cenozoic time. Its vertical displacement amplitude has exceeded 2400 m since the&#13; Quaternary. The fault can be divided into 5 active segments. Paleoseismological studies were concentrated on its&#13; western part from Baotou to Tumdzuoqi whereas the Hohhot Segment to the east was scarcely studied. To fill this gap&#13; of knowlegde, the authors carried out in-depth study on the Daqingshan piedmont fault during recent years. Excavation&#13; of trenches at Kuisu, Ulanblang, and Bakouzi sites on the Hohhot Segment of the Daqingshan piedmont fault&#13; and study of geomorphic surfaces allow us to identify and date paleoearthquakes and to evaluate the completeness of&#13; paleoseismic activity history. This was done both for the individual sites and for the entire segment since the Late&#13; Quaternary using the «method for displacement confining» along the fault and «method for correlation between multiple&#13; trenches». In this paper we present the geological loggings of two trenches at Kuisu site, provide the evidence&#13; for 6 events since 19 ka BP and the cumulative displacement amount produced by them is around 7 m. But the cumulative&#13; displacement amount obtained from difference in heights of geomorphic surfaces is 5.??.5.5 m. Results of tests&#13; using the method of displacement confining show that the event sequence revealed at this site can be considered complete.&#13; The data supplemented with information obtained in the Ulanblang and Bakouzi trenches show that 7 paleoseismic&#13; events occurred on the Hohhot Fault Segment since 19 ka BP, i.e. they occurred at 18.75 ± 0.75 ka, 16.97 ±&#13; ± 0.96 ka, 14.65 ± 0.67 ka, 11.82 ± 0.69 ka, 9.45 ± 0.26 ka, 6.83 ± 0.26 ka, and 4.50 ± 0.23 ka BP, respectively, and&#13; the average recurrence interval is 2.375 ± 0.432 ka. These results basically reflects the history of paleoseismic activity&#13; on the fault segment in this period of time

Late Quaternary history of paleoseismic activity along the Hohhot Segmentof the Daqingshan piedmont faultin Hetao depression zone, North China