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RT @alaska_avo: New publication: On the eruption age and provenance of the Old Crow #tephra. New age for the Old Crow (a significant strati…
RT @alaska_avo: New publication: On the eruption age and provenance of the Old Crow #tephra. New age for the Old Crow (a significant strati…
TEPHROCHRONOLOGY
RT @alaska_avo: New publication: On the eruption age and provenance of the Old Crow #tephra. New age for the Old Crow (a significant strati…
New publication: On the eruption age and provenance of the Old Crow #tephra. New age for the Old Crow (a significant stratigraphic marker) of 202.9 ± 9.5 ka, and oxide #geochemistry showing the source is NOT #Emmons. #USGS Free download til Mar 26: https:/