Lamont Natural Radiocarbon Measurements VII

Abstract

Radiocarbon-age measurements reported here were made at Lamont Geological Observatory between July 1958 and November 1960. Sample descriptions are classified as follows: I.Samples associated with glacial depositsII.Samples associated with marine coastal depositsIII.Samples associated with marine coastal deposits uplifted by glacial reboundIV.Samples associated with pluvial-lake depositsV.Samples from deep-sea coresVI.Samples from cave depositsVII.Miscellaneous samples of geologic interestVIII.Samples of archaeologic interest

Preservation of13C/12C Original Ratio and14C Dating of the Mineral Fraction of Human Bones From Saharan Tombs, Niger

“…Moreover, due to its good state of preservation and the absence of isotopic exchanges, the organic fraction (i.e. the collagen) gave reliable results and, consequently, dates based on the carbonated fraction were quickly abandoned (Olson & Broecker, 1961;Taylor, 1992). During the following decade a more elaborate research on carbonate hydroxylapatite was undertaken (Haynes, 1968;Hassan et al, 1977).…”

The Colonization of Eastern Siberia: an Evaluation of the Paleolithic Age Radiocarbon Dates

“…Given that carbonized plant remains are the most reliable sources of uncontaminated 14 C (Taylor, 1987), charcoal samples were given a four, the highest score. Pleistocene age wood, on the other hand, is easily contaminated by humates (Olson & Broecker, 1961: 144, Taylor, 1987. Thus, wood was given a score of three.…”

UCLA Radiocarbon Dates XI

“…To settle discrepancies in dating, an independent AMS date is desirable. Olson and Broecker (1961) at 10,000 yr (L-650) using charcoal (Orr,1968 Upper Pleistocene hominid from vicinity of Paderborn (51 ° 43' N, 8° 44' E); date based on amino acids (Henke & Protsch, 1978 Upper Pleistocene hominid from Kelsterbach next to Frankfurt airport (50° 6' N, 8° 41' E). Date based on amino acids extracted from calotte (Protsch, 1986 Upper Pleistocene hominid from Hanofersand near Hamburg (53° 33' N, 10° E).…”