Biblical dating

EXCREATIONIST

I'm working on a document that analyses the genealogies in the Bible. The
web-page is here:

http://members.ozemail.com.au/~wenke/bible/genealogies.htm

Basically, according to the Bible, it looks the Flood happened 1,656 years
after Adam was created, give or take a year. So a world-wide flood happened
1,656 years after the first human was created.

In that document I assumed that the ancestors of Jesus after Abraham gave
birth to their sons at the average age of 40. Based on that assumption, the
Flood happened in 2552 BC, and the creation of Adam (the first human) was
3916 BC.

This means that there shouldn't be any tools or cities around that aren't
covered by Flood sediments that are older than 4600 years old - unless the
Flood wasn't global. This also means that there were no humans living more
than 6000 years ago.

I was wondering what creationists and Christian evolutionists thought about
this including the accuracy of my document.