Geology Reference
In-Depth Information
()Cumulo-dome
a
()Coulée
b
( ) Peléean dome
c
()Upheaved plug
d
Spine
Talus
apron
Disturbed
regolith
Figure 5.7
Lava domes. (a) Cumulo-dome. (b) Coulée. (c) Peléean dome. (d) Upheaved plug. Not drawn to scale.
Source:
Adapted from Blake (1989)
Plate 5.4
Novarupta rhyolite tholoid formed in 1912 in the Katmai caldera, Katmai National Park, Alaska.
(
Photograph by Tony Waltham Geophotos
)
