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| 1 | The Holocene Activity Evidence of the Yema River-Daxue Mountain Fault in Western Qilian Mountain显示文摘Altyn Tagh fault controls the deformation characteristics of the northern margin of the Qinghai-Tibet Plateau.The sinistral slip rate of the eastern segment of the fault reduces gradually where the reduction transforms into the deformation within Qilian Mountain,forming a series of thrust faults and strike-slip faults.Among them,the Yema River-Daxue Mountain fault is one of the important structural transform faults in the study area.Based on the differences of the geometrical characteristics and activities,the fault is divided into four segments,the Yema River segment,the Shibandun segment,the Liushapo segment and the Baishitougou segment,among which the former three are Holocene active faults,and the Baishitougou segment belongs to late Pleistocene fault.The excavated trenches imply a total of 6paleoearthquake events,and at least 4 events have occurred during Holocene,whose occurrence times are 8300±700 yr BP,6605±140 yr BP,4540±350 yr BP,2098±47 yr BP,respectively.The recurrence interval is 2600±600 yr BP that is close to the lapsed time of the last one,2098±47 yr BP,which suggests that the Yema River-Daxue Mountain fault is in a high risk of major earthquakes in the future.The vertical coseismic displacements of the four Holocene paleoearthquake events are 100 cm,42 cm,40 cm and 50 cm,respectively,the horizontal coseismic displacements are 5 m,4.5–5.5 m,5–8 m and 4–5.5 m,separately,and then the reference magnitude of the paleoearthquake events is conjectured to be M7.6±0.1. | LUO Hao HE Wengui YUAN Daoyang SHAOYanxiu | 2013 | Acta Geologica Sinica(English Edition)2013，87，6： | 7 |
| 2 | First Discovery of North-South Striking Normal Faults near the Potential Eastern End of Altyn Tagh Fault显示文摘The Altyn Tagh fault is the northern boundary of Tibetan Plateau. As one of the most well-known strike-slip fault in the world, great achievements on tectonic deformation and Late Quaternary slip rate have been made. However, there is a long-lasting debate on whether the Altyn Tagh fault extends into the Jinta Basin or even eastward. In this paper, we use satellite image interpretation, field investigation, trench excavation, and optical stimulated luminescence dating to study newly found NS striking scarps in the eastern end of Jinta Nan Shan. The results are as follows: firstly, a group of normal faults develop on terrace T2 of Heihe River, the total length amounts to ~40 km, total scarp height is 30±5 m; secondly, four paleoseismic events have been interpreted from three trenches, approximate ages of events are 79.97±19.14 ka BP, 62.55±13.10~55.41±10.77 ka BP, before 16.89±2.08 ka BP, 8.52±1.49 ka BP, respectively; thirdly, just like NS normal faults in the western end of Altyn Tagh fault, the newly found NS extensional faults are likely the terminating tectonics of the eastern end of Altyn Tagh fault, the large Altyn Tagh fault may end in the eastern end of Jinta Nan Shan. | Bo Zhang Daoyang Yuan Wengui He Wei Pang Pengtao Wang Ming Wu | 2018 | Journal of Earth Science2018，29，1： | 6 |
| 3 | Slip Rate of Yema River–Daxue Mountain Fault since the Late Pleistocene and Its Implications on the Deformation of the Northeastern Margin of the Tibetan Plateau显示文摘The slip rate of Yema River–Daxue Mountain fault in the western segment of Qilian Mountains was determined by the dated offset of river risers or gullies. Results indicate that the left-lateral fault slip rate is 2.82 ± 0.20 mm/a at Dazangdele site,2.00 ± 0.24 mm/a at Shibandun site,and 0.50 ± 0.36 and 2.80 ± 0.33 mm/a at two sites in Zhazihu. The ideal average slip rate of the whole fault is 2.81 ± 0.32 mm/a. The lower slip rate confirms part of the displacement of Altyn Tagh fault was transformed into an uplifting of the strap mountains in the western segment of Qilian Mountains,whereas another part transformed into sinistral displacement of Haiyuan fault. This study illustrates that the slip of large strike-slip faults in the northeastern margin of the plateau transforms into crust thickening at the tip of the fault without large-scale propagation to the outer parts of the plateau. | LUO Hao HE Wengui YUAN Daoyang SHAO Yanxiu | 2015 | Acta Geologica Sinica(English Edition)2015，89，2： | 5 |
| 4 | Recent Activity of the Badu-Longwei Segment,Guguan-Xiangong Fault in Southern Liupanshan,Constrained by Rhythmic Sediment Lithology and Geomorphic Characteristics显示文摘This study's objective was to investigate the Guguan-Xiangong Fault, which lies in the southern Liupanshan area, through satellite image interpretation and field observations. Guguan-Xiangong Fault is divided into five subsegments; among these, the Badu-Longwei segment has been the most recently active. The geomorphic features of the Badu-Longwei segment are clearly displayed, including multiple high fault scarps with fresh bedrock free faces. There is significant evidence for Holocene activity of the three fault sections, located in Renhuashu, Tianjiagou, and Xinjiecun respectively. The three sections feature distinct episodic deposition and fault scratches. Based on 14 Cdating and field observations on the three fault sections, two or more paleoearthquakes across the Badu-Longwei fault segment are ascertained, between 5874±116 and 5430±140 a BP, and after 2037±83 a BP respectively. The Badu-Longwei segment of the Guguan-Xiangong Fault is preliminarily extrapolated as the seismogenic structure of the 600 A.D. Qin-Long earthquake. | SHI Zhigang YUAN Daoyang HE Wengui LIU Xingwang WANG Jun | 2015 | Acta Geologica Sinica(English Edition)2015，89，4： | 1 |
| 5 | Textual Research on the Historical Data of the 1573 AD Minxian Earthquake in Gansu Province and Discussion on Its Seismogenic Structure显示文摘According to the detailed study of the historical earthquake records and causative structure of the Minxian M6(1/2) earthquake in 1573 {A.D.}, we have found that the most grievous disaster area lies nearby the Minxian county seat (Minzhou county at that time). So, we have identified the extremely seismic area of the 1573 {A.D.} The Minxian M6(1/2) earthquake was located in Minxian city, the intensity of the meizoseismal region is Ⅷ~Ⅸ, the epicenter is 34.4°N, 104.0°E, the location precision is Ⅱ and the deviation of location is less than or equal to 25km. Tectonically, this area lies in the transition region of stress transfer and structural transform between the east Kunlun fault and the northern margin of the west Qinling fault. The differential activity of the Lintan-Dangchang fault zone is obvious, and only parts of the segment put up Holocene activity. There are landslides and rock bursts of different sizes in the meizoseismal region. By integrated analysis, we conclude that the Minxian-Dangchang segment of the Lintan-Dangchang fault is the seismogenic structure of the 1573 A.D. M6(1/2) Minxian earthquake, in Gansu Province. | Zheng Wenjun Lei Zhongsheng Yuan Daoyang He Wengui Ge Weipeng LiuXingwang | 2007 | Earthquake Research in China2007，21，4： | 0 |
| 6 | Characteristics of Paleoseismic Activity Along the Tianqiaogou-Huangyangchuan Fault on the Eastern Section of the Qilian Mountains显示文摘The Tianqiaogou-Huangyangchuan fault lies east of the main peak, Lenglongling Mount, in the east part of the Qilian Mountains and is one of the major active faults on the eastern section of the Qilian Mountains. The fault is separated into two segments at Guanjiatai village, the eastern and western segments, and has undergone obvious movement since the Holocene. Six trenches were excavated to study the paleoseismic activity along the fault. Integrated and comparative analysis of sediments in the trenches reveals 7 paleoseismic events and a historic earthquake on the fault since the Holocene. Their ages are: event Ⅰ is (10743±343)a BP, event Ⅱ (9038±39)a BP, event Ⅲ (7050±577)a BP, event Ⅳ (4847±185)a BP, event Ⅴ (3562±190)a BP, event Ⅵ (2476±194) a BP, and event Ⅶ (1505±253), respectively, and event Ⅷ is the 1927 Gulang M_S8.0 earthquake. It indicates that the fault might have contributed to the 1927 Gulang M_S8.0 earthquake. The temporal and spatial distribution of the paleoseismic events is relatively uniform and is characterized approximately by a quasi-periodic recurrence. | Zheng Wenjun Yuan Daoyang He Wengui | 2005 | Earthquake Research in China2005，19，2： | 0 |
| 7 | 淫羊藿苷通过提高骨磷灰石稳定性抵御尾吊大鼠骨流失显示文摘Bone metabolism derangement induced by space microgravity is severe threaten to the health of astronauts[1].Exercise is the primary countermeasure in long-duration spaceflights,despite the outcomes remain debatable[2,3].In addition,pharmacological interventions cannot be used to protect against the osteoporosis induced by space environment due to various side effects[4,5]. | He Jinpeng Feng Xiu Shi Wengui Hua Junrui Li He Wang Jufang | 2017 | IMP & HIRFL Annual Report2017，，1： | 0 |
| 8 | Rupture Property of the 1927 Gulang M_s8.0 Earthquake and Numerical Simulation of Rupture Mechanism显示文摘The 1927 Gulang M_S8.0 earthquake is a severe earthquake that followed the Haiyuan M_S8.5 earthquake of 1920 in the Qilian Mt._Hexi Corridor earthquake zone. There are divergences of opinion in the previous studies about the rupture properties of the earthquake. Based on trenching and field investigation, and analysis of historical data, we hold that the earthquake resulted from the joint process of the Tianqiaogou_Huangyangchuan fault, Dongqingding segment of the Huangcheng_Shuangta fault and the Wuwei_Tianzhu buried fault, which constitute the Gulang nappe. By finite_element numerical simulation on the deformation mechanism of Gulang nappe, it is found that the stress and strain mainly concentrate in the western segment of the Tianqiaogou_Huangyangchuan fault, the Dongqingding segment of the Huangcheng_Shuangta fault, and the Gulangxia segment of the Wuwei_Tianzhu buried fault and the Gulang_Shuangta fault. The stress concentration coincides with the distribution of the earthquake surface rupture. It also proves that the earthquake is an outcome of the Gulang nappe activity as a whole. | Zheng Wenjun Yuan Daoyang Zhang Dongli He Wengui Guo Hua Liu Baichi | 2005 | Earthquake Research in China2005，19，4： | 0 |
| 9 | A Preliminary Study of Palaeo-earthquakes on the Maqu Fault of East Kunlun Fault Zone显示文摘The East Kunlun active fault is an important NWW-trending boundary fault on the northeastern margin of the Qinghai-Xizang (Tibet) Plateau. The Maqu fault is the easternmost segment of the East Kunlun active fault. Based on three trenches, four Holocene palaeo-earthquake events are identified along the Maqu fault. The latest palaeo-earthquake event is (1730±50) ~ (1802±52) a BP, the second is (3736±57) ~ (4641±60) a BP, the third is (8590±70) a BP, and the earliest is (12200±1700) ka BP. The time of the first and second palaeo-earthquake events is more reliable than that of the third and last ones. As a result, the recurrence interval of the palaeo-earthquakes on the easternmost segment of the East Kunlun active fault is approximately 2400 a, and the palaeo-earthquake elapsed time is (1730±50) ~ (1802±52) a BP. | He Wengui Xiong Zhen Yuan Daoyang Ge Weipeng Liu Xingwang | 2006 | Earthquake Research in China2006，20，4： | 0 |
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