Yale Natural Radiocarbon Measurements VIII

Abstract

No important instrumental modifications have been made since publication of our last list (Yale VII). As before, we are indebted to many collaborators for samples and for assistance with descriptions and comments. Technical assistance has been provided by George Young, Carolyn Haupt, and Jonathan Wood. The generous support of the National Science Foundation, under grants G-19080 (to Stuiver), G-19335 (to Deevey), and G-24049 (to Rouse) is gratefully acknowledged. As in our previous lists, dates are reported in terms of the Libby half life of C14, 5570 ± 30 yr, and geochemical measurements are expressed as ∆, the normalized deviation from 95 percent of the NBS oxalic-acid standard. Infinite dates are reported as beyond a limit equal to 3o above background.