THE AGE OF THESE ARTIFACTS

The final report from the University of Washington Thermoluminescence Dating Lab is:

UW3512 - Sandstone with glyphs

UW3513 - Pyroclastic material with bones and beads

UW3514 - Ceramic partially covered with pyroclastic material

UW3515 - Glass pieces

UW3571 - Hard ceramic or rock

CALENDAR DATE (years AD/BC) 

UW3512 - BC 5110 ± 2300 =7,100 years old

UW3513 - AD 1420 ± 60 = 600 years old

UW3514 - AD 1580 ± 300 = 440 years old /Last Eruption

UW3515 - BC 3490 ± 820 = 5,500 years old

UW3571 - AD 230 ± 130 = 1,900 years old/Previous eruption

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