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sill
lava
A sill (assuming you are talking about horizontal layers of rock)
Subduction.
Slab Pull.
sill
lava
fracture
sulfur rock
The slab that forms when magma forces itself across rock layers is called a dike.
As my submarine descended into the ocean trench, we passed by a slab of rock.
That would depend on where the slab was and what it was doing. How close to a wall is it? What's under the slab? Rock, plumbing? Can you do it? Yes. Should you? Good question. What may happen varies with each slab and circumstance. You may bust it out and find a large rock under it and have to replace it.
Tectonic Plate
Pipes
sill
Kid Rock.
A sill (assuming you are talking about horizontal layers of rock)