Re: the idea of more than one biblical flood is what's silly, AND the date of course
Yes, it's likely that the Grand Canyon is the result of Noah's Flood/
".. the GC was formed while the waters of Noah’s Flood receded from the American continent. As this receding water flowed from east to west, the GC was mainly carved out in the opposite direction, from west to east. This scenario explains many characteristic and unusual features of the GC, such as its location through the top of a ridge, its branching structure, its numerous major and minor side canyons, its meandering and the presence of multiple ‘outflow points’ in its terminal escarpment." http://creation.com/grand-canyon-origin-flood
Of course when dealing with a past event like this it can be difficult to determine exactly what happened. This is a difficulty with all the historical sciences.
Coyote, if you want the true history of the Flood, just start a new thread, on it and I shall answer. You can post your billions and trillions of years, and I can post my immensely smaller exact numbers.
Not a problem, just go to Proposed New Topics....
As requested, here is a proposed new topic in which Davidjay can enlighten us on the TRVE history of the Flood.
I'd like to suggest the Humor forum, but probably shouldn't...
I accept the arguments that Continental Drift began as part of the Flood so it's not really off topic. The comment that in the days of Peleg the world was divided probably refers instead to the division into different languages at Babel.
The Flood created the basic topography that rivers then followed. Since then of course there has been thousands of years of river erosion and deposition which has had a large impact on the result we see today.
The Niagara falls have been eroding at an average of over 1m/year substantially altering the immediate post flood geography of that area. Similarly the Colorado River will have altered the terrain within it's catchment.
[update] Accurate surveys of erosion of the Falls of Niagara began in 1842.
From 1842 to 1905, the average rate of erosion of the Horseshoe Falls was 1.16 meters (3.8 feet) per year.
From 1906 to 1927, this rate of erosion was reduced to .70 meters (2.3 feet) per year. This reduction coincided with the large quantity of water being diverted for hydro-electric generation.
I agree, Faith. Gen 1-11 reads as history and scholars had no difficulty interpreting it as such for thousands of years until "old age" ideas took root. Usher, Newton, and others were able to calculate quite similar dates for Creation from it, agreeing within a few hundred years.
Re: Cratonic Sequences: subsidence or rise in sea level
OK but you seem to be saying that the Mississippi Delta, for instance, has sunk independently of the land around it?
What you get is a deflection bowl something like this (pavement example)
Areas covered by ice during the Ice Age subsided under the load and are still rebounding after the ice melted.
The Himalayas continue to rise more than 1 cm a year but this is due to collision of continental plates rather than rebound. This is a problem for Flood Geology since it suggests that if Everest was covered by the flood it would have to have risen at an average of more than 1m/year and a peak rate of several m/year. Now that would have been a pretty violent event!
[edit1]The Earth itself also responds to lunisolar gravitational attraction. The solid earth tide (body tide) often reaches +/- 20 cm, and can exceed 30 cm. http://geodesyworld.github.io/SOFTS/solid.htm This happens on a daily basis but is spread over thousands of kilometers and ~24 hours so we don't notice it.