Figure 5
From: Near-surface termination of upward-propagating strike-slip ruptures on the Yangsan Fault, Korea
Microstructures of rupture splays at the Inbo2 (a–e) and Inbo1 (f–h) sites. (a,b) Slab (a) and thin-section (plane-polarized light) (b) images showing a rupture splay along the boundary between mature foliated gouge and unconsolidated gravel. Yellow dashed lines indicate asymmetric lenses derived from sediments and gouges. (c,d) SEM–BSE images showing thin undulated foliated layers in the mixed part of PSZ (c) and well-rounded clasts in the PSZ (d). (e) SEM–BSE image showing asymmetric lenses in the mixed part in the PSZ. Yellow arrows depict cataclasis of clasts. (f–h) Slab (f), thin-section (g), and SEM–BSE (h) images showing a rupture splay along the boundary between dark clay and yellowish sand.
