Limestone Layers and the Flood

Do you have a geological source for this?btw -- you should be careful using Walt Brown. While he might happen to be right about something it would be a surprise given the utterly nutty things he propounds.

Fair enough.

I don't find that picture all that convincing Percy. Here are 3 other sites:Thie first two are images. The third is a pretty detailed decription of chalk and the white cliffs of Dover in particular.http://cc.usu.edu/~sharohl/tsecls2.jpg Microscopic Limestonehttp://www.geologyshop.co.uk/chalk.htm

Percy, what I'd like to see are the microscopic pictures. The ones I found were in the right direction but not what you describe.If I was shown such pictures (of the White Cliffs) and told that most of the chalk was made up like that my only choice to disagree would be that I was being lied to.ABEIt seems that AIG agrees that the chalks are formed of micro fossils. (including a picture) perhaps we can all agree that they are. AIG then supplies some calculations to suggest that the deposition rate can be much, much higher.This message has been edited by NosyNed, 03-18-2006 10:45 AM

This is what my Christian friends dislike so much about YECy fundamentalism. Why should you have to abandon your really important beliefs?Who cares how old the earth is and how life changes on it? Who cares about the size of a flood? Are these important? Not to most Christians who have very strong beliefs.The insistance of fundamentalists that it is all or nothing seems to me, as an outsider, to do much more harm than good. The people here are not a good sample but we see how many have been driven from faith by their dogmatic insistance on the indefensible.

This needs clarifying:(Note that I agree with Percy that the composition of limestone might need to be off this thread but... )(Note 2: It appears that there is no arguement from AIG(at least) about the composition of limestone. They agree it is micro fossils in large part. Can Flood Geology Explain Thick Chalk Beds? | Answers in Genesis The argument now becomes, in part, with the calculations presented there.) When you say "much limestone" -- do you mean much of a particular sample (that is it is microfossils in a recrystalized matrix) or do you mean that some limestones have few or no microfossils and are, in bulk, made up as you describe with no clear sign of their orgainic origins. Does that mean that they may not be organic in origin?What is diagenesis? Can you describe this in more detail please? Can you still, with a microscope, determine the origin of that particular limestone?

I think someone pointed out that if water with a certain Mg concentration infiltrates limestone then a chemical reaction occurs.I think someone also noted that seawater contains Mg; it is a reasonably common element.Now what happens if you take cubic kilometers of seawater and remove a lot of water by evaporation? -- hint: Mg doesn't evaporate all that easily.

In the discussion we are having does where the Mg came from matter? If you don't focus then you are going to end up all over chemistry and physics as well as geology.