| 横断山地区末次冰期冰碛物石英光释光测年的适应性 |
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| 引用本文： | 欧先交,曾兰华,隆浩,许刘兵,周尚哲,赖忠平.横断山地区末次冰期冰碛物石英光释光测年的适应性[J].冰川冻土,2011,33(1):110-117. |
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| 作者姓名： | 欧先交 曾兰华 隆浩 许刘兵 周尚哲 赖忠平 |
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| 作者单位： | 中国科学院盐湖资源与化学重点实验室,中国科学院青海盐湖研究所,青海,西宁,810008;嘉应学院,地理科学与旅游学院,广东,梅州,514015;华南师范大学地理科学学院,广东,广州,510631;嘉应学院,地理科学与旅游学院,广东,梅州,514015;中国科学院盐湖资源与化学重点实验室,中国科学院青海盐湖研究所,青海,西宁,810008;华南师范大学地理科学学院,广东,广州,510631 |
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| 基金项目： | 国家自然科学基金项目(40901011408721194077104940601012); 中国科学院百人计划项目(A0961)资助 |
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| 摘 要： | 为了探讨青藏高原东部地区冰碛物光释光测年的可行性,在横断山脉北部竹庆盆地硬普沟3列侧碛垄上采集了7个样品,提取出38～63μm的石英,用单片再生剂量法(SAR)测量等效剂量(de),并对样品光释光信号的有关物理特性进行了研究.结果表明:SAR程序的循环比在可接受范围之内,热转移信号的贡献<4.2%,不会对研究样品的等效...
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| 关 键 词： | 冰碛物 光释光测年 石英 单片再生剂量法 |
Applicability of OSL Dating the Quartz from the Tills of Last Glacial in the Hengduan Mountains |
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| Ou Xian-jiao,ZENG Lan-hua,LONG Hao,XU Liu-bing,ZHOU Shang-zhe,LAI Zhong-ping.Applicability of OSL Dating the Quartz from the Tills of Last Glacial in the Hengduan Mountains[J].Journal of Glaciology and Geocryology,2011,33(1):110-117. |
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| Authors: | Ou Xian-jiao ZENG Lan-hua LONG Hao XU Liu-bing ZHOU Shang-zhe LAI Zhong-ping |
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| Institution: | OU Xian-jiao1,2,3,ZENG Lan-hua2,LONG Hao1,XU Liu-bing3,ZHOU Shang-zhe3,LAI Zhong-ping1(1.Luminescence Dating Group,Key Laboratory of Salt Lake Resources and Chemistry,Qinghai Institute of Salt Lakes,Chinese Academy of Sciences,Xining Qinghai 810008,China,2.School of Geography and Tourism,Jiaying University,Meizhou Guangdong 514015,3.School of Geographical Science,South China Normal University,Guangzhou Guangdong 510631,China) |
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| Abstract: | In order to investigate the applicability of dating tills from the Tibetan Plateau,seven samples were collected from three lateral moraines in Yingpu Valley of Zhuqing Basin in the northern Hengduan Mountains.Quartz grains of 38~63 μm were isolated and then the single aliquot regenerative-dose(SAR)protocol was employed for equivalent dose(De)determination.For all the samples,the recycling ratio is in the range of acceptability and the contribution of the thermal transfer signal is less than 4.2%;Dose recovery test shows that the laboratory dose could be recovered successfully.These indicating that the SAR protocol is appropriate for De determination.The nearly symmetrical De distributions in the probability density frequency plot indicate that quartz grains were well-bleached prior to burial.The OSL ages(15~60 ka)show good internal agreement and are concordant with geomorphologic observations. |
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| Keywords: | tills OSL dating quartz single-aliquot regenerative-dose protocol |
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