[1]LIU Xingwang,YUAN Daoyang,SU Qi,et al.Study on Late Quaternary Slip Rates of Two Faults within Jiuxi Basin[J].Journal of Seismological Research,2019,42(01):112-119.
Copy
Journal of Seismological Research[ISSN 1000-0666/CN 53-1062/P] Volume:
42
Number of periods:
2019 01
Page number:
112-119
Column:
Public date:
2019-04-20
- Title:
-
Study on Late Quaternary Slip Rates of Two Faults within Jiuxi Basin
- Author(s):
-
LIU Xingwang1; 2; YUAN Daoyang1; SU Qi3; WU Zhao1; LIU Yu1
-
(1. Lanzhou Institute of Seismology,China Earthquake Administration,Lanzhou 730000,Gansu,China)(2. Lanzhou National Observatory of Geophysics,Lanzhou 730000,Gansu,China)(3. School of Earth Science and Engineering,Nanjing University,Nanjing 210046,Jiangsu,China)
-
- Keywords:
-
Jiuxi basin; Yinwashan fault; Xinminpu fault; slip rate
- CLC:
-
P315.242
- DOI:
-
-
- Abstract:
-
Based on satellite image interpretation,differential GPS measurement and geomorphologic chronology sampling,we carried out a detail study on the Late Quaternary slip rates of the Yinwashan and Xinminpu faults located in the Jiuxi basin. The Yinwashan fault is located at the eastern side of the Yinwashan with an overall strike of 315° and a length of about 25 km. The Xinminpu fault strikes 300° with a length of 20 km. Both of the two faults are Holocene active reverse faults. Through the detailed field investigation,we measured the fault scarps at the typical fault landform site. Combining the chronological date of the corresponding surface,we got the vertical slip rates for the tow faults in the Late Quaternary are(0.08±0.02)mm/a and(0.11±0.02)mm/a,respectively. Combined with the fault dip and previous research data,it is found that the crustal shortening rate of the internal faults in the Jiuxi basin is about 1 mm/a,and the shortening rate of the crust in the Jiuxi basin is about 2.4 mm/a.