Report
STEPPED-COMBUSTION C-14 DATING IN LOESS-PALEOSOL SEDIMENT
| العنوان: | STEPPED-COMBUSTION C-14 DATING IN LOESS-PALEOSOL SEDIMENT |
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| المؤلفون: | Cheng, Peng, Fu, Yunchong |
| بيانات النشر: | UNIV ARIZONA DEPT GEOSCIENCES |
| سنة النشر: | 2020 |
| المجموعة: | Institute of Earth Environment: IEECAS OpenIR (Chinese Academy of Sciences) / 中国科学院地球环境研究所机构知识库 |
| مصطلحات موضوعية: | C-14, loess-paleosol, stepped-combustion, delta C-13, LATE QUATERNARY LOESS, SOIL ORGANIC-MATTER, RADIOCARBON AGE, HIGH-RESOLUTION, MONSOON RECORD, ASIAN MONSOON, AMS, CARBON, FRACTIONS, PYROLYSIS, Geochemistry & Geophysics |
| الوصف: | In this study, low temperature (room temperature, 400 degrees C LT) and high temperature (400-900 degrees C HT) of bulk organic carbon samples were dated from two loess and paleosol profiles. The results showed that radiocarbon (C-14) dates of the LT were younger than HT fractions, indicating effect of younger contamination from overlying layers. The delta C-13 variation of the HT fraction appears to respond much more sensitively to climate change, and C-14 ages of HT fraction can produce reasonable C-14 ages from a younger layer, but it is very difficult to obtain reliable C-14 ages from older layer as a result of uncomplete removal of young carbon. |
| نوع الوثيقة: | report |
| اللغة: | English |
| Relation: | RADIOCARBON; http://ir.ieecas.cn/handle/361006/15729 |
| DOI: | 10.1017/RDC.2020.25 |
| الاتاحة: | http://ir.ieecas.cn/handle/361006/15729 https://doi.org/10.1017/RDC.2020.25 |
| رقم الانضمام: | edsbas.1CFB38CC |
| قاعدة البيانات: | BASE |
| DOI: | 10.1017/RDC.2020.25 |
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