Geology Reference
In-Depth Information
Sill
Image not available due to copyright restrictions
Dike
6. Crown Butte in Montana is an eroded
laccolith standing about 300 m above the
surrounding plain. The magma making
up this small pluton was intruded about
50 million years ago.
7. Diagrams showing
the evolution of an
eroded laccolith.
Eroded laccolith
101
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