The stratigraphic column, Cambrian through Quaternary, was deposited in Noah's flood, a world-wide event. Arbitrary time hack (ATH) is the technical term for the Eras, Periods and Epochs of the geological timescale.
Arbitrary Time Hacks
Eras, Periods and Epochs
The Geological Timescale is split into fours Eras. These are broadly obvious from significant transitions between sequences of sedimentary formations. The Precambrian is obviously very different to everything above it.
September 14th
The Recent Epoch is everything since Peleg's tectonics. Few people have had a greater influence on this time than Charles Darwin.
August 23rd
The Oligocene, an epoch in the geological timescale, is actually an ecosystem of plant and animal communities which has been destroyed, transported and buried in a world-wide flood.
August 21st
The Paleocene is an ecosystem which has been destroyed, transported and buried in sediment during a world-wide flood.