The millennia old footprints are caught in an archaeological debate.
. These carbon isotopes decay at a constant rate over time, and comparing the amount of Carbon-14 in the atmosphere to the amount present in fossilized plant material allows scientists to determine their approximate age., grows underwater and gets a lot of its carbon for photosynthesis from dissolved carbon atoms in water.. “For the most part, it’s using the carbon it finds in the lake waters.
The dating of the footprints can be resolved through other methods, including radiocarbon dating of terrestrial plants and optically stimulated luminescence dating of quartz found in the sediment, the authors write. However, both of these estimates of when humans first inhabited North America typically ignore indigenous knowledge that life and culture in North America“There are many sites that have really good dating and really good reports that are much older,” Paulette Steeves, a Cree-Metis archaeologist at Algoma University who studies Indigenous history, and author of
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