Geology Reference
In-Depth Information
Table 1.1
Classification of igneous activity in relation to tectonic setting (see also Figure 1.7).
Plate margin
Within plate
Constructive
Destructive
Collision-zone
Ocean ridge
(large ocean
basin)
Back arc
spreading
Island arc and
transition to active
continental
margin
Continent-continent and
continent-island arc
collision
Oceanic
Continental-rifting
Extrusive
Basalt
Basalt-andesite (in
island arcs); andesite-
dacite-rhyolite (in
Dacite-rhyolite
Basalt-andesite-rhyolite
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