Historical (Yuan Dynasty) Earthquake on the North Danghe Nanshan Thrust, Western Qilian Shan, China

Slip Rate of the Danghe Nan Shan Thrust Fault from 10Be Exposure Dating of Folded River Terraces: Implications for the Strain Distribution in Northern Tibet

“…α1 and α2 are the dip angles of the planar fault segments above and below the listric fault segment. The planar fault dips 40° between B and C but has a shallower dip of ∼25° close to the surface as revealed by paleoseismic trenches (Shao et al, 2017; for trench location see Figure 2). Inset shows the relation between terrace heights, fault slip S, and fault dip angles (cf.…”

“…Paleoseismic investigations revealed the presence of a young fault scarp with a height of 0.8 ± 0.2 m, clearly demonstrating that the Danghe Nan Shan frontal thrust fault is active and capable of producing major earthquakes (Shao et al, 2017). With respect to the entire shortening across the central Danghe Nan Shan, our shortening rates of ∼0.7 and ∼0.8 mm/year represent minimum values because additional shortening is caused by the Danghe Nan Shan piedmont thrust fault (Figure 8).…”

“…We refer to this fault as the Danghe Nan Shan frontal thrust (Figure 2). Fault scarps up to several tens of meters high extend over a distance of 17 km along the fault, which has a total length of ∼45 km (Shao et al, 2017). Paleoseismic investigations revealed the presence of fresh scarps with an average height of 0.8 ± 0.2 m and a lateral extent of ∼14 km, which probably formed during an M W 7.0 ± 0.5 earthquake in A.D. 1289 (Shao et al, 2017).…”

“…Fault scarps up to several tens of meters high extend over a distance of 17 km along the fault, which has a total length of ∼45 km (Shao et al, 2017). Paleoseismic investigations revealed the presence of fresh scarps with an average height of 0.8 ± 0.2 m and a lateral extent of ∼14 km, which probably formed during an M W 7.0 ± 0.5 earthquake in A.D. 1289 (Shao et al, 2017). Another active thrust fault, which we call piedmont thrust fault, is situated 5 km farther to the southwest (Figure 2).…”

Miocene Range Growth Along the Altyn Tagh Fault: Insights From Apatite Fission Track and (U‐Th)/He Thermochronometry in the Western Danghenan Shan, China

“…The Danghenan Shan is bounded by thrust faults on both of its flanks, which emplace the Paleozoic sediments or granodiorite onto the Silurian sandstone to the south, and the Cenozoic sediments to the north (Figure , GBGMR, ). Active thrusts cut Quaternary alluvial surfaces north and south of the Danghenan Shan, showing remarkable fault scarps on satellite imagery and in the field (Meyer et al, ; Shao et al, ). At the western end of the Danghenan Shan, the Altyn Tagh fault is separated into two branches, forming the northern and southern Altyn Tagh faults (Figure ).…”