Igneous Structures and Field Relationships - Faculty web pages

c
Figure 4-124
12. c-e.
Illustration of the development of an
inflated flow. In d, , a thin flow spreads around a rock wall.
In (e),(
the flow is inflated by the addition of more lava
beneath the earlier crust. A old stone wall anchors the
crust, keeping it from lifting. The wall can be seen in the
low area in part (c). © John Winter and Prentice Hall.