That concept began with eighteenth-century French naturalist Georges Cuvier, picked up steam with Charles Lyell, and it has been in vogue ever since.
This is despite the fact that it causes more problems for interpreting rock strata than it solves.
And the ages assigned to the layers were derived from long age evolutionary assumptions – not from the scientific facts, – as the column was established long before we even had radiometric dating.
And today we know through lab experiments and natural disasters (such as the eruption of Mt. Helens) that major layering of rock strata can happen catastrophically in a short period of time.
Young-earth creation geologists have long held that most sedimentary strata resulted from waterborne deposits during Noah’s Flood.
A Summary of the Million Dollar RATE Research Project (Radioisotopes and the Age of The Earth) Introduction: Rocks and fossils do not come with dates on them.
Actually the assignment of a certain number of millions of years to a rock formation does not derive from the strata itself.The standard Geological Column became the reference point, even though it does not appear anywhere on earth except in text books.