Supporting Information for Analogue sandbox modeling of orogenic wedge front faulting: roles of inherited fault zones and topographic loading

Published: 22 November 2021| Version 1 | DOI: 10.17632/3c3g3jsyjh.1
chuang sun


This is the supporting information of a sandbox modeling study focusing on fault processes in orogenic wedge frontal areas, like the Longmen Shan front where the 2008 Wenchuan earthqauke and 2013 Lushan earthquake occurred. It contains four parts, including: Figure S1: The critically tapered angle of our modeling materials, determined by the reference experiment. (Page 2) Figure S2: Summary of the 27 sandbox experiments involving inherited fault zones. Both top and lateral view of selected photos are provided. (Page 3-17) Figure S3: Mohr diagrams helping to constrain the frictional strength of the investigated IFs. They come together and form Figure 15a. (Page 18) Figure S4: Fault reactivation diagram adopted in Figure 15b, according to Sibson (1985) and Sibson and Xie, (1998). (Page 19-20) Generated by sandbox modeling and mechanics analysis, these data are helpful to understand why and how fault segmentation shows up during both long-term and short-term seismic deformation of orogenic wedge front.


Steps to reproduce

Most of the presented data are generated by crustal sandbox experiments. The others are correspondence of modeled behaviors with the mechanics calculation from Mohr-Circle solution and fault activation mode of Sibson, (1985)


Sun Yat-Sen University


Fault Zone, Topography, Orogenic Belt