All of the molecules were here at the same time. As the earth clumped together and became a compact unit, rock formed. Most of the early rocks were recycled in one way or another. For some reason other rocks weren't.
Consider Australia (erosion). Australia is largely flat, there are few mountains or canyons. This is what an old piece of earth looks like. Think of Ayer's rock in Oz (Uluru). That chunk of rock was harder to erode than the rock that was around it. All of that area had a surface of the same altitude at one time.
Consider the Himalayas (transforming). They are still being built, the top of the mountains contain fossils of sea life because it was once under the Indian Ocean. As that ocean floor collided with the Asian continent, the two pushed up like a throw rug that a dog just skidded into.
Consider the Ring of Fire (sublimation). The continents are drifting along atop tectonic plates that are moving. Some collide as in the Himalayan scenario and some don't. Near Japan, the ocean floor is pushing against Asia. But, this time, the ocean floor is going under the the continent. It goes under and melts (recycling), sometimes to be released during volcanic activity (new rock formation).
Sometimes rocks just sink under the weight of rocks above them to a point in the earth where they become elastic because of heat and pressure (transformed rock). Here they can twist and corrugate like taffy only to be exposed to light again after an earth quake.
Ah, earth quakes! When the tectonic plates I was talking about don't ram into each other, sometimes they just sort of slide past one another. The earthquakes in california are due to this type of movement, the West side of the fault line may go North while the East side may go South. Sometimes an slide can go up and down - the West side of the fault may rise while the East side drops down. The risen side will be exposing older rock (it's deeper in the earth).