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STEPPED-COMBUSTION 14C DATING IN LOESS-PALEOSOL SEDIMENT
Radiocarbon ( IF 2.0 ) Pub Date : 2020-04-08 , DOI: 10.1017/rdc.2020.25 Peng Cheng , Yunchong Fu
Radiocarbon ( IF 2.0 ) Pub Date : 2020-04-08 , DOI: 10.1017/rdc.2020.25 Peng Cheng , Yunchong Fu
In this study, low temperature (room temperature, 400°C LT) and high temperature (400–900°C HT) of bulk organic carbon samples were dated from two loess and paleosol profiles. The results showed that radiocarbon (14 C) dates of the LT were younger than HT fractions, indicating effect of younger contamination from overlying layers. The δ13 C variation of the HT fraction appears to respond much more sensitively to climate change, and 14 C ages of HT fraction can produce reasonable 14 C ages from a younger layer, but it is very difficult to obtain reliable 14 C ages from older layer as a result of uncomplete removal of young carbon.
中文翻译:
黄土-古土壤沉积物中的阶梯燃烧 14C 测年
在这项研究中,大块有机碳样品的低温(室温,400°C LT)和高温(400-900°C HT)来自两个黄土和古土壤剖面。结果表明,放射性碳(14 C) LT 的日期比 HT 分数更年轻,表明来自覆盖层的年轻污染的影响。δ13 HT 分数的 C 变化似乎对气候变化的反应更加敏感,并且14 HT分数的C年龄可以产生合理的14 C从较年轻的层开始老化,但很难获得可靠的14 由于未完全去除年轻碳,C 从较旧的层老化。
更新日期:2020-04-08
中文翻译:
黄土-古土壤沉积物中的阶梯燃烧 14C 测年
在这项研究中,大块有机碳样品的低温(室温,400°C LT)和高温(400-900°C HT)来自两个黄土和古土壤剖面。结果表明,放射性碳(