a. Silicic magma cooling slowly in a batholith

b. Mafic magma cooling rapidly in a dike

c. Intermediate magma cooling rapidly in a dike

d. Silicic magma cooling rapidly in a sill

e. Fluids and gases from silicic magma forced up through fractures in country rock

f. Mafic magma cooling slowly in a batholith

g. Intermediate magma cooling slowly in a stock

h. Low-silica magma cooling slowly at great depth