Two huge lakes broke through to gouge that canyon which is over 50x too wide for its current flow.
And how long did this take? How many years? Where are these lakes now?
The many layers of Sedimentary Rock in the Grand Canyon were definetly not formed by a huge flood or "two huge lakes." Here's how the many layers of sediment in the Grand Canyon were really formed:
"The sediments that covered the roots of these ancient mountains were deposited by a series of advancing and retreating ocean coast lines. As the climate of our planet warms and cools the median sea level of the planet rises and falls due to the melting and freezing of the polar caps. When the sea level rises, land areas which are close to the coast and relatively low in altitude are sometimes submerged. This was the case with the land area of the Grand Canyon and is why so many different sedimentary rock layers exist. Each of these was formed by a different period in which the ocean moved in and covered the land, stayed for a while, and then retreated again. Limestone deposits are created when the ocean moves in and slates, shales and mudstone deposits are created when the ocean moves out and the area is covered by silts washing into the retreating ocean."
http://www.kaibab.org/geology/gc_geol.htm#how
There's a nice lesson in geology for you there, Ice. I hope you learned something.
Not to mention, spidergoat said this:
"IceAgeCivilizations,
Your assumption seems to be that there must have been a worldwide flood, due to the presence of sedimentary rock all around the world.
I have a different explanation. As you say, rivers bring sediment from the continents to the bottom of the oceans, where they form layers. If there was one worldwide flood, there would be one layer of sediment evenly spread around the planet. Even though it might have formed distinct bands as it settled out, these characteristics would be about the same wherever we found this layer. There is no evidence for such a layer.
Instead, we find many different kinds of sediment, depending on where it eroded from. Some places accumulate chalk.
The layers in the grand canyon are not uniform, as if formed from the same stuff, there are sometimes gaps of millions of years in successive layers. This is because another layer did form, was eroded away over millions of years, and another formed on top of that.
Also, a worldwide flood would have floated off the ice caps in Greenland and Antarctica. They could not have reformed in such a short time. The evidence is in the seasonal layers of ice and bubbles which go back more than 160,000 years.
To prove a global flood could have happened, you need a theory that allows two or more layers in the ice to form each year, a process that is not occurring in modern times."