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Lab number
M-1275 c
Material dated
charcoal; charbon de bois
Locality
ca. 69 m above Lake Superior on Greenstone Ridge near Monument Rock, Isle Royale, Keweenaw County, Michigan
Map sheet
e
Submitter
T. Bastian
Date updated
June 28, 1999
Measured Age
2800 ± 120
Normalized Age
2800 ± 120
δ13C (per mil)
-25.0
Significance
geoarchaeology; géoarchéologie
Context
pit 56, 3.2-3.4 ft below the highest edge of the mine, deposits representing natural in-filling after abandonment, therefore limiting the age of mine use

References