VRob said:Could you elaborte on the other geological features of the Sphinx that point towards its construction during the 4th dynasty? The only real evidence I know of, besides chemical dating methods, is the Pharoah who is supposedly carved on the face of the Sphinx. Using his time as ruler of Egypt to date the Sphinx.
There are two leading theories by geo-archaeologists (Harrell and Reader come to mind) on the age of the Sphinx based on the weathering of the Limestone. Much of this is connected with the amount of time needed for weathering to have done the job as well as whether or not there was sufficient water available (and when) to do the job.
Reader suggests that the Sphinx was constructed during the 2nd Dynasty (Reader, 1999) [I'll try to find a webpage that has his paper online] between 5000 and 7000 BCE. Harrell maintains that it was during the 4th Dynasty, between 2500 and 3000 BCE.
Reader, who's actually a geological engineer, points out that the sand and debris filled limestone quarry nearby (which dates to the 4th Dynasty) collects surface runoff and, therefore, prevents the surface hydrology from eroding the Sphinx.
Harrell contends that there is significant anecdotal accounts of current surface runoff actually reaching the Sphinx and that if surface water (from storms, flash-flood type torrents, etc.) reaches the Sphinx now, then it certainly did throughout history. He also disagrees with Reader's point that most of the runoff would remain surface flow and contends that a significant amount would become sub-surface flow after absorbtion by the limestone.
In short, Harrell sees the erosion as physical and chemical weathering brought on by surface and subsurface hydrology.
Either way, the evidence seems clear that the Sphinx is no older than the 2nd Dynasty and this is based upon the stratigraphy of the area. The strata that the Sphinx doesn't intrude upon are older than 7000 BCE.
Here's a link that I had from some college notes... to be fair, I only skimmed it, but it appears to sum up both the "old Sphinx" and the "young Sphinx" arguments. www.uiowa.edu.
I, personally, find the debate fascinating and both sides are persuasive (Reader and Harrell). I don't, however, give Schoch and West much credit... their contention that the Sphinx and the Giza plateau constructions are the work of other-than-Egyptians doesn't appear to hold much water.
VRob said:Can you comment on my other questions regarding the documenting of the Great Pyramid's construction, and the lack of hyrogliphics within its walls. This to me, is very damaging to the standard theories. Where is the documentation for its construction?
I really couldn't say... I also couldn't find any literature on the topic. But I suspect that this is an ethnographical problem. The purpose of the Egyptian pyramids was a funerary one. Perhaps the builders didn't see the logic in leaving behind a record of their work inside a tomb. Even if the dead do rise, they wouldn't stay there in the dark, they'll exit the tomb.
That's but one hypothesis, and quite off the cuff at that.
Sources:
J.A. Harrell, (1994). "The Sphinx Controversy - Another Look at the Geological Evidence", KMT Vol 5 No. 2, p70-74.
Reader, Colin (1999). Khufu Knew the Sphinx. To date, unpublished, but Reader has used this for numerous lectures, etc..