posted on Oct, 19 2012 @ 11:23 AM
Originally posted by pheonix358
reply to post by multichild
Next to the Pyramids are the remains of timber structures that can be carbon dated. The problem is that one has to make the assumption that these
structures were used to build the Pyramids. It is just as valid to suggest that a ruler decided to give the Pyramids a face lift or a repair and thus
we know when a repair was done rather than when it was built.
Just look at the refurbishment of any great landmark (the Statue of Liberty) to see where this thinking can go.
Sorry, but no.
Two seperate investigations have been made concerning dating Egyptian sites with C14. Mortar used in the pyramids was made using lime. Lime is made
by burning limestone. The process in ancient Egypt resulted in charcoal being mixed with the lime, and the charcoal is still embedded in the mortar
Ancient Egypt has already been dated using C14, IOW, and the dates match fairly well with dates already determined through pottery styles and
estimated dates based on other cultures.
Regarding the OP, what I make of it (and I didn't go to the link) is that a more accurate calibration of very old C14 dates has been found, using
sedimentation in an ancient lake as a guide.
C14 in the atmosphere is created by cosmic rays, which are reasonably constant, as the largest source is the Sun. However, the occasional star does
explode in this galaxy and this produces cosmic rays too, which impact the Earth and thus cause variation in C14. C14 readings, therefore, must be
calibrated in some way or many readings will indicate that the artifact being dated is younger than it actually is.
Through various ingenious methods, science has established calibration curves that allow for pretty accurate C14 dating. This thread appears to be
about a new calibration curve for very
old artifacts, a thing which was needed.
I should note here that the monuments of Ancient Egypt do not fit into that "very
old artifacts" category.