EVALUATION OF C-14 AGES OF ORGANIC FRACTIONS OF PALEOSOLS FROM LOESS-PALEOSOL SEQUENCES NEAR XIAN, CHINA
文献类型：期刊论文
| 作者 | HEAD, MJ; ZHOU, WJ; ZHOU, MF |
| 刊名 | RADIOCARBON
 |
| 出版日期 | 1989 |
| 卷号 | 31期号:3页码:680-696 |
| 文献子类 | Article; Proceedings Paper |
| 英文摘要 | The C-14 dating of organic fractions from paleosol layers containing < 2% carbon in loess-paleosol sequences from the loess plateau in China has yielded results that are quite often much younger than the true age of these sediments. Percolation of modern organic materials from agricultural activities, and binding of these materials within the weathered clays of the paleosols has meant that conventional pretreatment techniques for C-14 dating would not isolate a reliable chemical fraction. The total sequence from Bei Zhuang Cun, in Shaanxi Province, reflects the climatic history of the area for ca 30,000 years, ranging from the interstadial of the last glacial period to the postglacial period. Analysis of solvent extracts of organic material from this site indicates that they are mainly composed of carbohydrate residues originating from the relatively recent agricultural activity. Validity of the humic components for dating will be discussed. |
| 学科主题 | Geochemistry & Geophysics |
| WOS关键词 | MATTER |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| 出版者 | UNIV ARIZONA DEPT GEOSCIENCES |
| WOS记录号 | WOS:A1989EW80500057 |
| 源URL | [http://ir.ieecas.cn/handle/361006/11907]  |
| 专题 | 黄土与第四纪地质国家重点实验室（1985-2004） |
| 推荐引用方式 GB/T 7714 | HEAD, MJ,ZHOU, WJ,ZHOU, MF. EVALUATION OF C-14 AGES OF ORGANIC FRACTIONS OF PALEOSOLS FROM LOESS-PALEOSOL SEQUENCES NEAR XIAN, CHINA[J]. RADIOCARBON,1989,31(3):680-696. |
| APA | HEAD, MJ,ZHOU, WJ,&ZHOU, MF.(1989).EVALUATION OF C-14 AGES OF ORGANIC FRACTIONS OF PALEOSOLS FROM LOESS-PALEOSOL SEQUENCES NEAR XIAN, CHINA.RADIOCARBON,31(3),680-696. |
| MLA | HEAD, MJ,et al."EVALUATION OF C-14 AGES OF ORGANIC FRACTIONS OF PALEOSOLS FROM LOESS-PALEOSOL SEQUENCES NEAR XIAN, CHINA".RADIOCARBON 31.3(1989):680-696. |
入库方式： OAI收割
来源：地球环境研究所
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