Your answer would be Tectonic.
Tectonic plates move in various directions, and move slowly. Due to the movement of tectonic plates the earth cracks, and shakes which is called an earch quake. Tectonic plates move constently everyday, and you can't feel it because it's slow. Wehn tectonic plates move quickly, the earth starts to shake. The most common places that have tectonic plates have a higher chance of having an earthquake, even a tusnami.
Answer: Due to plate movement
Explanation: This limestone was near the ocean floor the collisions of tectonic plates cause this limestone to move up, because of the combination of streaching and lifting and futhermore was not exposed to pressures or heat to metamorphose.
About every 2 million years
Answer: second choice.
I am hoping that this is the right answer.
Sill does not cut across preexisting rocks. Laccoliths can be contrasted with sills. It is any sort of igneous intrusion that has split apart two strata, giving rise to a domelike structure. Laccoliths tend to be smaller than a stock, and usually is less than 10 miles in diameter.