Fig. 3
![Fig. 3](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2Fs40645-018-0223-4/MediaObjects/40645_2018_223_Fig3_HTML.png)
Frontally confined versus frontally emergent MTDs. Black arrows indicate primary translation direction. Purple arrows indicate onlapping relationships. BSS—basal shear surface. a Frontally confined landslide. The arbitrary seismic line across MTD 4 (see Fig. 6 for location). Note how the landslide mass is buttressed against undisturbed strata. b Frontally emergent landslide. Seismic Inline 2352 across MTD 6 (see Fig. 7 for location). Note the runout of the landslide mass beyond the frontal ramp