A rock that crystalizes from _________ must be _________.
a) Magma, intrusive
b) Magma, extrusive
c) Magma, clastic
d) Lava, intrusive
Rocks with aphanitic textures are typically formed by ______ processes.
An intrusive igneous rock formation that forms a tabular feature that cross cuts pre-existing strata is known as a:
d) Volcanic neck
)A mafic igneous rock is likely to be ______ , in color.
a) Light (tan, light gray, pink)
b) Intermediate (medium gray or speckled black and white)
c) Dark (dark gray, black)
d) Bright green
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