2020
DOI: 10.1029/2019jb018634
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Segmented Thrust Faulting: Example From the Northeastern Margin of the Tibetan Plateau

Abstract: Seismogenic faults are commonly composed of a series of segments, revealed by geometric barriers and along‐strike gradients in fault activity. At the northeastern margin of the Tibetan Plateau, the Minle‐Damaying Fault (MDF), bounding a portion of the eastern Qilian Shan, illustrates segmented paleoseismic behavior of a major seismogenic reverse fault. Field surveys, trench excavations, and drone‐surveyed topography along the MDF reveal scarps with diverse cumulative displacements. Multiple events, with timing… Show more

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Cited by 16 publications
(57 citation statements)
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“…These earthquakes prove that the segment boundaries on the FHF can act as impermanent barriers in single segment rupture or multisegment rupture events, but they cannot impede the rupture propagation of large earthquakes such as the AD 1609 earthquake. The earthquakes alternating between longer multisegment ruptures and shorter single-segment ruptures along the FHF is similar with the Minle-Damaying Fault (thrust fault) in the eastern Qilianshan in China (Lei et al, 2020) and the Wasatch fault zone (normal fault) in United States (McCalpin, 2009;DuRoss et al, 2016).…”
Section: Implications For Thrust Fault Rupture Segmentationmentioning
confidence: 71%
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“…These earthquakes prove that the segment boundaries on the FHF can act as impermanent barriers in single segment rupture or multisegment rupture events, but they cannot impede the rupture propagation of large earthquakes such as the AD 1609 earthquake. The earthquakes alternating between longer multisegment ruptures and shorter single-segment ruptures along the FHF is similar with the Minle-Damaying Fault (thrust fault) in the eastern Qilianshan in China (Lei et al, 2020) and the Wasatch fault zone (normal fault) in United States (McCalpin, 2009;DuRoss et al, 2016).…”
Section: Implications For Thrust Fault Rupture Segmentationmentioning
confidence: 71%
“…Disjointed segments of faults can behave as distinct faults, rupturing separately in individual earthquakes, but at times these segments coalesce and rupture simultaneously in a large, entire-fault encompassing event (Sieh, 1996;Elliott et al, 2009). Thrust rupture segment boundaries may be indicated by different kinds of structural discontinuities along the fault, such as a strike-slip tear fault, sharp changes in the orientation of the fault, abrupt changes in dip, and so forth (Davis et al, 2005;Yue et al, 2005;McCalpin, 2009;Dal Zilio et al, 2020;Lei et al, 2020).…”
Section: Introductionmentioning
confidence: 99%
“…On the other hand, the Minle‐Damaying Fault, one of the major mountain front fault in the eastern Qilian Shan, was supposed to be inactive during Holocene (Liu et al, 2000), whereas multiple earthquakes are recorded in this area during the last 50 years (Figure 1), indicating an intense Holocene fault activity and earthquake risk. Lei et al (2020) suggest an isolated rupture of the western segment of the Minle‐Damaying Fault would produce a Mw7.0 earthquake. In summary, a better constrain of characteristics of tectonic activity in the eastern Qilian Shan will be helpful in clarifying the mysterious deforming mechanism of the Frontal Thrust system.…”
Section: Introductionmentioning
confidence: 99%
“…These different results (Cao et al, 2019;Xiong et al, 2017; imply that detailed studies of the distribution of deformation within the Qilian Shan and its piedmonts are needed. On the other hand, several big historic earthquakes are recorded along the mountain front of the Qilian Shan (Lei et al, 2020;Xu et al, 2010;.…”
Section: Introductionmentioning
confidence: 99%
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