There is one other problem with the young earth view in regards to the quantity of carbonate in the rock record. The following is going to assume that the carbonate was not formed during the flood but during the preflood period and was merely redistributed during the flood. Now there are 51,000 x 10^18 g of carbon in carbonate rocks or 51,000 x 10^18 g/12 g/mole= 4.25 x 10^21 mole. Since the carbon in the carbonate came from atmospheric CO2, the entire carbonate rock volume represents the removal of 4.25 x 10^21 moles from the atmosphere. The present atmosphere has a mass of 5.2 x 10^21 g (CRC 1965/66 ed. F117) and .00033 is CO2. Today there are
5.2 x 10^21 *.00033= 1.71 x 10^18 g of CO2
1.71 x 10^18 g / 44 g/mole= 3.9 x 10^16 mole.
The total carbonate in the earth represents
4.25 x 10^21/3.9 x 10^16= 109,000 times the present CO2 in the atmosphere.
Let us assume that there are 1656 years between the origin of the earth and the global catastrophe. This means that 109,000/1656= 65 atmospheres worth of CO2 must be removed from the atmosphere each year. Somehow that much carbon dioxide must have been cycled through the system each year, that is, it must have been produced by photosynthesis, sent into the atmosphere and water, and then incorporated by bacteria, forams, clams, etc. and deposited in the rocks.
This is unrealistic. I don't think science really supports the young earth view. A particular brand of theology does though.