Question

Which intrusive feature may start as a sill but, as more magma builds, push upward like a lens?

extrusive igneous rock
igneous rock
laccolith
batholith

Answer 1

The correct answer is **laccolith**. A laccolith starts as a sill (a horizontal igneous intrusion) but can accumulate enough magma to push upward, creating a dome-like, lens-shaped feature as it forms.