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A walk through other dating methods
There are different candidates for the oldest preserved human footprints in North America. The older sight has a less certain date than the younger one. Today we look at ways of dating fossils, other than using carbon 14.
Here’s an article about the Calvert island footprints.
Could These Be the Oldest Human Footprints in North America?
Here’s an article on the footprints from Northeastern Mexico.
Archaeologists Have Found the Oldest Footprints in North America
Here’s a paper on dating Travertine rock deposits with uranium.
Uranium series dating of travertine from archaeological sites