Inherited age of floating charcoal fragments in a sand-bed stream, Macdonald River, NSW, Australia: Implications for radiocarbon dating of sediments

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2023-09-01 DOI:10.1177/09596836231176502

R. Blong, K. Fryirs, R. Wood, Fleur King, L. Schneider, Emilie Dotte-Sarout, S. Fallon, R. Gillespie, Qianyang Chen, R. Esmay

引用次数: 1

Abstract

Radiocarbon dates on multiple individual charcoal fragments floating together down the Macdonald River, New South Wales, Australia, have calibrated ages spanning >1700 years. Partial explanations of this range of inherited ages can be attributed to the inbuilt age of living biomass, charcoalisation conditions, hillslope transport and storage and/or valley floor (fluvial) transport and storage, but the contribution of each of these components can be constrained only rarely. These results caution against using radiocarbon dating of charcoal as the sole dating technique to interpret Late-Holocene sedimentary histories. These findings also show that it is unlikely that deposit age has a dependable relationship to charcoal age.

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澳大利亚新南威尔士州麦克唐纳河沙床溪流中漂浮木炭碎片的继承年代：沉积物放射性碳年代测定的意义

对漂浮在澳大利亚新南威尔士州麦克唐纳河上的多个单独的木炭碎片进行放射性碳测年，已经校准了大约1700年的年龄。这一遗传年龄范围的部分解释可以归因于生物质的内在年龄、木炭化条件、山坡运输和储存和/或谷底(河流)运输和储存，但这些组成部分的贡献很少受到限制。这些结果提醒人们不要将木炭的放射性碳测年作为解释晚全新世沉积历史的唯一测年技术。这些发现还表明，沉积年龄不太可能与木炭年龄有可靠的关系。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.