Limestone Layers and the Flood

Let me play "yahweh's advocate"- what if in the antediluvian world, the microorganisms that made up modern limestone deposits suddenly experienced an unprecedented surge of growth in the pre-flood and early flood stages, then, as the torrents dislodged mountain ranges, these vastly over-populated masses of organisms were buried by alternating landslides of sand and silt, preserving them as limestone...alright, that probably has a million holes in it, here's a 100+ year old essay on chalk that methodically shows that chalk must be older than Adam: http://aleph0.clarku.edu/huxley/CE8/Chalk.htmlI don't know how much of what's in there has been superceded by the last century of geological advances, but it's a pretty nice explanation of the evidence to that date.