Take a moment to think about the materials at the link in post 8 on this thread. Then open Google Maps/Earth and investigate the impact that has gone mostly unnoticed until recently (and which remains completely ignored by official geologists).
The flood waters were delivered by a massive comet - a nearly incomprehensible amount of water. But it puts so much into context.
Likely that the estimate for when the impact occurred might have to be reworked.
Part II, Page 112 of Dr Walt Brown’s book:
“Mid-Oceanic Ridge. This ridge, one of our planet’s largest and most dramatic structural features, was discovered in the 1950s. It wraps around the earth on generally a great-circle path and is the world’s longest mountain range—46,000 miles. [See Figure 43 on page 112.] Unlike most mountains, it is composed of a type of rock called basalt. Because most of the ridge lies on the ocean floor, relatively few people know it exists. How did it get there? Why is it primarily on the ocean floor? Why does it intersect itself in a Y-shaped junction in the Indian Ocean? The portion in the Atlantic Ocean is called the Mid-Atlantic Ridge. Is it just a coincidence that it splits the Atlantic from north to south and is generally perpendicular to and bisected by the equator? If Europe, Africa, and the Americas were once connected, how did they break apart?”
Center for Scientific Creation - In the Beginning: Compelling Evidence for Creation and the Flood
http://www.creationscience.com/onlinebook/IntheBeginningTOC.html