This obsidian blade has recently been hydration dated by Joaquín García-Bárcena to 22,000 years ago and the hydration results published in a seminal article that deals with the evidence for pre-Clovis habitation of Mexico.
This obsidian blade has recently been hydration dated by Joaquín García-Bárcena to 22,000 years ago and the hydration results published in a seminal article. This seminal article deals with the evidence for pre-Clovis habitation of Mexico.