Measurement of the 26Mg(p, n)26 Alg (7.2 × 105) yr cross section via accelerator mass spectrometry

The Duvanny Yar cross-section located in the Lower Kolyma River valley of Northern Yakutia (69°N, 158°E, height above the Kolyma River level 55 m), has been studied and dated in detail by radiocarbon. The sequence mainly consists of sandy loam sediments with large syngenetic ice wedges. Their width at the top is 1–3.5 m. Allochthonous organic material occurs in high content, concentrating as 0.5–0.7 m lenses. Shrub fragments, twigs, and mammoth bones are accumulated in peaty layers. Through interpolation based on a series of 14C dates, dating of the host sediments provides an approximate age for the ice wedges. The 14C dates of various types of organic material are sometimes very close, but not all in agreement. Therefore, the dates do not accurately show the age of the δ18O and δD plots. A new approach is developed to a 14C dating strategy of syncryogenic sediments with high admixture of allochthonous organic material. The main purpose of this study is to consider detection of inversions or disturbances in the syngenetic permafrost sediment at the Duvanny Yar cross-section by 14C date series. Direct accelerator mass spectrometry (AMS) dating of the ice confirmed the relatively young age of ice wedges.

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Accelerator mass spectrometry

AccessScience ◽

10.1036/1097-8542.002750 ◽

2015 ◽

Keyword(s):

Mass Spectrometry ◽

Accelerator Mass Spectrometry

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Hiatus in Prehistoric Chronology of the Cis-Baikal Region, Siberia: Pattern or Artifact?

Radiocarbon ◽

10.1017/s0033822200041953 ◽

2007 ◽

Vol 49 (1) ◽

pp. 123-129 ◽

Cited By ~ 2

Author(s):

Yaroslav V Kuzmin

Keyword(s):

Mass Spectrometry ◽

Accelerator Mass Spectrometry ◽

Baikal Region ◽

Critical Evaluation ◽

Burial Grounds

The problem of a hiatus at about 6100–5300 BP (about 4900–4200 cal BC) in the prehistoric chronology of the Cis-Baikal region in Siberia is discussed. Based on a critical evaluation of existing evidence, there was no discontinuity found in the cultural sequence between the Kitoi and Serovo/Glazkovo complexes of the Neolithic, and the proposed “hiatus” may be an artifact based on underestimation of solid data. Conventional 14C dates are presented that were generated in the 1980s to early 2000s for Cis-Baikal prehistoric burial grounds, and were later dated by the accelerator mass spectrometry (AMS).

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14C INTERCOMPARISON EXERCISE ON BONES AND IVORY SAMPLES: IMPLICATIONS FOR FORENSICS

Radiocarbon ◽

10.1017/rdc.2020.142 ◽

2021 ◽

pp. 1-12

Author(s):

G Quarta ◽

M Molnár ◽

I Hajdas ◽

L Calcagnile ◽

I Major ◽

...

Keyword(s):

Mass Spectrometry ◽

International Atomic Energy Agency ◽

Accelerator Mass Spectrometry ◽

Reference Curve ◽

Nuclear Testing ◽

Energy Agency ◽

Widespread Application ◽

Intercomparison Exercise ◽

High Degree ◽

Data Calibration

ABSTRACT The application of accelerator mass spectrometry radiocarbon (AMS 14C) dating in forensics is made possible by the use of the large excursion of the 14C concentration in the post-WWII terrestrial atmosphere due to nuclear testing as a reference curve for data calibration. By this approach high-precision analyses are possible on samples younger than ∼70 years. Nevertheless, the routine, widespread application of the method in the practice of forensics still appears to be limited by different issues due to possible complex interpretation of the results. We present the results of an intercomparison exercise carried out in the framework of an International Atomic Energy Agency (IAEA) CRP-Coordinated Research Project between three AMS laboratories in Italy, Hungary, and Switzerland. Bone and ivory samples were selected with ages spanning from background (>50 ka) to 2018. The results obtained allow us to assess the high degree of reproducibility of the results and the remarkable consistency of the experimental determinations.

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Dating of Cremated Bones

Radiocarbon ◽

10.1017/s0033822200038078 ◽

2001 ◽

Vol 43 (2A) ◽

pp. 249-254 ◽

Cited By ~ 108

Author(s):

J N Lanting ◽

A T Aerts-Bijma ◽

J van der Plicht

Keyword(s):

Mass Spectrometry ◽

Success Rate ◽

Accelerator Mass Spectrometry ◽

Bone Collagen ◽

Organic Fraction ◽

Mineral Fraction

When dating unburnt bone, bone collagen, the organic fraction of the bone, is used. Collagen does not survive the heat of the cremation pyre, so dating of cremated bone has been considered impossible. Structural carbonate in the mineral fraction of the bone, however, survives the cremation process. We developed a method of dating cremated bone by accelerator mass spectrometry (AMS), using this carbonate fraction. Here we present results for a variety of prehistoric sites and ages, showing a remarkable success rate for this method.

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THE BEGINNING OF THE IRON AGE AT ARSLANTEPE: A 14C PERSPECTIVE

Radiocarbon ◽

10.1017/rdc.2021.19 ◽

2021 ◽

pp. 1-19

Author(s):

Federico Manuelli ◽

Cristiano Vignola ◽

Fabio Marzaioli ◽

Isabella Passariello ◽

Filippo Terrasi

Keyword(s):

Mass Spectrometry ◽

Bronze Age ◽

High Precision ◽

Iron Age ◽

Accelerator Mass Spectrometry ◽

Late Bronze Age ◽

13Th Century ◽

Historical Events ◽

Preliminary Results ◽

Archaeological Data

ABSTRACT The Iron Age chronology at Arslantepe is the result of the interpretation of Luwian hieroglyphic inscriptions and archaeological data coming from the site and its surrounding region. A new round of investigations of the Iron Age levels has been conducted at the site over the last 10 years. Preliminary results allowed the combination of the archaeological sequence with the historical events that extended from the collapse of the Late Bronze Age empires to the formation and development of the new Iron Age kingdoms. The integration into this picture of a new set of radiocarbon (14C) dates is aimed at establishing a more solid local chronology. High precision 14C dating by accelerator mass spectrometry (AMS) and its correlation with archaeobotanical analysis and stratigraphic data are presented here with the purpose of improving our knowledge of the site’s history and to build a reliable absolute chronology of the Iron Age. The results show that the earliest level of the sequence dates to ca. the mid-13th century BC, implying that the site started developing a new set of relationships with the Levant already before the breakdown of the Hittite empire, entailing important historical implications for the Syro-Anatolian region at the end of the 2nd millennium BC.

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