Originally posted by mmiichael
Dating the Sphinx has been based on calculating the amount of time the level of erosion has taken. As no one knows exactly in what state it was in
originally, possibly with a covering of some sort, this is wide open to divergent opinions.
We don't know exactly what the conditions were over the thoudsands of years, like the humidity, wind movement, water levels etc.
Two different means of dating the sphinx are laid out on this page of ATS' wikipedia site, Tinwiki:
Dating the Sphinx
If you read that, you'll see that neither method involves wind or water erosion.
The Egyptologists date it based on the dream Stela.
Schoch dates it based on an assumption that rear floor of the enclosure was carved out by Kaphre and that the front floor seems to have been exposed
to air for far longer than the rear.
In the case of Schoch's method, water and sand covering the enclosure's floor wouldn't make any difference in the rate of subsurface weathering
incurred by the limestone from which it is carved.
The Dream Stela useage dates the entire Sphinx to Kaphre's time.
Originally posted by mmiichaelThere are convincing arguments it was build well beyond the conservative estimates of 3000 BC. But there
have been many trying to demonstrate it was built beyond 12000 years ago with little support from anything else.
I'm unaware of any date proposed for the sphinx that could be called both "conservative" and involve the year 3,000 BC.
BTW, You're still right. Giza is an ancient limestone plateau. The Sphinx is near where the Nile once ran. Such a positioning could well have
resulted in the eastern part of the "future" Sphinx being bordered on both sides and in front by gullies carved into the stione by runoff from the
plateau, the vast majority of which is uphill from the Sphinx.
These gullies could have exposed deeper portions of limestone, possibly even caves or small cavities, resulting in an earlier apparent date for the
excavation of the front of the monument than for the rear.
See, the "subsurface" weathering begins at the surface, when it is exposed to aitr. the weathering extends futrther down into the rock with
time.
Schoch assumed the more weathered front was the result of an earlier excavatuion for that part, but the fact is, it just as easily could be due to
exposure to the air by other means, such as guillies or caves.
So, when you said that "no one knows exactly in what state it was in originally," you nailed it, pal.
Harte