RADIOCARBON CONCENTRATIONS OF WOOD ASH CALCITE: POTENTIAL FOR DATING

被引：20

作者：

Regev, Lior ^{[2
]}

Eckmeier, Eileen ^{[3
,4
]}

Mintz, Eugenia ^{[3
]}

Weiner, Steve ^{[2
]}

Boaretto, Elisabetta ^{[1
,3
]}

机构：

[1] Bar Ilan Univ, Dept Land Israel Studies & Archaeol, IL-52900 Ramat Gan, Israel

[2] Weizmann Inst Sci, Dept Biol Struct, IL-76100 Rehovot, Israel

[3] Weizmann Inst Sci, Kimmel Ctr Archaeol Sci, Radiocarbon & Cosmogen Isotopes Lab, IL-76100 Rehovot, Israel

[4] Univ Bonn, INRES Soil Sci & Soil Ecol, D-53115 Bonn, Germany

来源：

RADIOCARBON | 2011年 / 53卷 / 01期

基金：

欧洲研究理事会;

关键词：

ATMOSPHERIC (CO)-C-14; ISOTOPIC FRACTIONATION; NORTHERN-HEMISPHERE; CARBON-MONOXIDE; HIGHER-PLANTS; OXALATE; MORTAR; DECOMPOSITION; ISRAEL; OXYGEN;

D O I：

10.1017/S0033822200034391

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

Ash is formed when plant calcium oxalate crystals (CaC2O4) decompose to form calcite (CaCO3). We found that ash does retain the original calcium oxalate radiocarbon concentration, but in addition, there is another minor C-14 source. This is shown by the presence of a consistent small shift in the pMC and delta C-13 levels when comparing cellulose and ash from modern and archaeological woods. Possible mechanisms for C-14 exchange during combustion or due to diagenesis are considered in order to define parameters for identifying better-preserved wood ash samples.

引用

页码：117 / 127

页数：11

共 39 条

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