Very Little Sediment on the Seafloor Due to Plate Tectonics, ocean floor is continuously created at mid-ocean ridges and subducted into the Earth’s mantle at ocean trenches.
We believe all the dates over 5,000 years are really compressible into the next 2,000 years back to creation.
So when you hear of a date of 30,000 years for a carbon date we believe it to be early after creation and only about 7,000 years old.
One of the impressive points Whitewall makes is the conspicuous absence of dates between 4,500 and 5,000 years ago illustrating a great catastrophe killing off plant and animal life world wide (the flood of Noah)!
I hope this helps your understanding of carbon dating.
If something carbon dates at 7,000 years we believe 5,000 is probably closer to reality (just before the flood).