| 末次间冰期以来渭南黄土剖面高分辨率古气候时间标尺 |
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| 引用本文： | 王文远,刘嘉麒,潘懋,刘东生.末次间冰期以来渭南黄土剖面高分辨率古气候时间标尺[J].地球科学,2000,25(1):98-102. |
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| 作者姓名： | 王文远 刘嘉麒 潘懋 刘东生 |
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| 作者单位： | 北京大学地质系!北京100871(王文远，潘懋)，中国科学院地质研究所!北京100029(刘嘉麒，刘东生) |
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| 基金项目： | 国家自然科学基金重大资助项目!(No .492 9110 0 -0 1) |
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| 摘 要： | 利用细颗粒热释光技术对渭南剖面重要地层界线处的 7个样品进行了年龄测定 ,并在此基础上 ,结合已发表数据利用多项式回归方法建立了渭南剖面高分辨率的古气候时间标尺 ,其中S0 /L1- 1,L1- 1/L1- 2 ,L1- 4/L1- 5 ,L1- 5 /S1,S1/L2的界线年龄分别为 1.1,2 .5 ,5 .1,7.6 ,12 .8ka ,除了L1- 4/L1- 5的界线年龄与氧同位素 3阶段的起始年龄差距较大之外 ,它们与SPECMAP深海氧同位素 5以上各阶段的界线年龄可进行较好的对比 ,而L1- 4/L1- 5的界线年龄与北太平洋风尘记录的氧同位素年龄却有很好的一致性 .
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| 关 键 词： | 黄土 热释光 高分辨率 时间标尺 |
| 文章编号： | 1000-2383(2000)01-0098-05 |
| 修稿时间： | 1999-08-31 |
RECONSTRUCTION OF THE HIGH RESOLUTION TIMESCALE IN THE WEINAN LOESS SECTION OF THE LATE QUATERNARY |
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| Wang Wenyuan,Liu Jiaqi,Pan Mao,Liu Dongsheng.RECONSTRUCTION OF THE HIGH RESOLUTION TIMESCALE IN THE WEINAN LOESS SECTION OF THE LATE QUATERNARY[J].Earth Science-Journal of China University of Geosciences,2000,25(1):98-102. |
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| Authors: | Wang Wenyuan Liu Jiaqi Pan Mao Liu Dongsheng |
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| Affiliation: | Wang Wenyuan 1 Liu Jiaqi 2 Pan Mao 1 Liu Dongsheng 2 |
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| Abstract: | Seven samples of loess and paleosol collected from the major stratigraphic boundaries of the Weinan section, Shaanxi Province, have been dated using the fine_grain TL technique. Based on the TL results and previously ages_published from this section, the polynomial regression methods are applied to developing the high resolution timescale for the Weinan loess section in the Late Quaternary. According to this timescale, the ages of S0/L1-1, L1_1/L1_2, L1_4/L1_5, L1-5/S1 and S1/L2 stratigraphic boundary of Weinan section are 1.1, 2.5, 5.1,7.6 and 12.8?ka. With exception of the maximum difference between the ages of L1_4/ L1_5 and the ages of 3/4 stage boundary of the deep_sea oxygen isotopes, they are generally consistent with the ages of 1/2, 2/3, 4/5 and 5/6 stage boundary of the deep_sea oxygen isotopes in the SPECMAP curve. |
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| Keywords: | loess thermoluminescence dating high resolution timescale |
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