Intrusive volcanic activity Flashcards
1
Q
Batholith description
A
Domed shaped mass of igneous rock with large crystals
2
Q
Batholith formation
A
Large chamber of magma pushing aside surrounding rock before it reaches the surface
3
Q
Dykes description
A
Vertical intrusions with horizontal cooling cracks cutting across the bedding plane
4
Q
Dykes formation
A
Formed by magma pushes into fractures and cools
5
Q
Sills description
A
Horizontal intrusions with vertical cooling cracks
6
Q
Sills formation
A
Formed when magma cools between layers of sedimentary rocks