Geology Reference
In-Depth Information
( ) Piston or plate collapse
a
( ) Piecemeal
b
Topographic rim
Chaotic
Landslide
breccia
Structural rim
Funnel
()Trapdoor
c
()Downsag
d
Extension
Figure 5.9
Four end-member mechanisms of caldera collapse. (a) Piston or plate collapse. (b) Piecemeal. (c) Trapdoor.
(d) Downsag.
Source:
After Cole
et al.
(2005)