The Pangaea super-continent broke up into tectonic plates and these moved into their approximate current locations over the space of a centuries. How do we know? By studying paleomagnetism.
The Speed of Plate Tectonics
Uniformitarianism Fails
Uniformitarianism exists to support the time scale needed in the popular science narrative of godless existence (SciPop) but it's not a testable hypothesis, so it's not scientific.
Uniformitarianism Applied
A classic example of the use of uniformitarianism is the calculation of how much has time has passed since the tectonic plates formed. Supposedly we can tell how fast the African and American continents are moving apart.
Relative Dates
Since there's no positive proof that nuclear decay rates have always been constant popular science (SciPop) depends on a negative result to a flawed hypothesis. When you've got nothing, you've got nothing to loose.
Absolute Dates
Radiometric dating has been contrived in such a way as to make it look as if the "dates" it calculates for rocks are absolute. Absolute means that the dates are separated on a timescale which is known.
Experimentation for the Decay Constant
Are nuclear decay rates constant or variable? With only 120 years of measurements to work with, and the use of gravitational time dilation to debunk stellar spectroscopy, there's no way to find out.
The SciPop Math Defense
As simple and convenient the young Earth creation (YEC) variable rate of nuclear decay response to radiometric dating may be, it's also an Achilles Heel.
How Deep was Noah’s Flood?
There was enough water in the great deep to flood the Earth 1,200 km deep. 15 cubits was when the crew of the ark stopped taking soundings. Mount Everest formed 101 years AFTER Noah's flood during Peleg's tectonics.
Present Day Earth
With a few pieces of information we can take what we know about the Earth today and deduce what the Earth was like in the past. This is the alternative to using Uniformitarianism to assume that things were the same in the past.
Uniformitarianism
People presume to disprove God by cobbling together some math based on Uniformitarianism ideals that were popularized by Charles Lyell, a contemporary of Charles Darwin.