A laccolith forms when a sill ____ and causes the overlying rocks to ____.
A) ruptures underground; collapse
B) inflates; bow upwards
C) deflates; melt
D) breaks the surface; explode
E) becomes a dike; tilt 90 degrees
Correct Answer:
Verified
Q21: Volcanoes have a cylindrical conduit know as
Q22: One example of a vesicular felsic rock
Q23: Most plutons form _.
A)well within plates
B)from extruded
Q24: Aphanitic, phaneritic, and porphyritic are terms that
Q25: Natural glass such as obsidian forms when
Q27: The process of assimilation _.
A)includes melting and
Q28: Although all compositions are represented, most plutons
Q29: Both batholiths and stocks are _.
A)mostly discordant
B)not
Q30: Large crystals found in a fine-grained groundmass
Q31: Igneous rocks formed by explosive volcanic activity
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