A preliminary study on thermoluminescence characteristics of sediments from the North Pacific
文献类型：期刊论文
| 作者 | Lu, Huahua; Shi Xuefa; Wu Yonghua; Yang Gang; Wei Jianwei; Ren Xiangwen |
| 刊名 | ACTA OCEANOLOGICA SINICA
 |
| 出版日期 | 2007 |
| 卷号 | 26期号:3页码:56-72 |
| 关键词 | North Pacific Surface Sediments Thermoluminescence Sedimentary Environment Clay Minerals |
| ISSN号 | 0253-505X |
| 文献子类 | Article |
| 英文摘要 | Thirty-eight surficial deposit samples were collected from the equatorial North Pacific, and the natural thermoluminescence (TL) characteristics of both bulk and clay fraction samples ( < 2 mu m fractions) were studied by the FJ427 - Al automatic TL Dosimeter for the first time. With the measurements of clay mineral composition, element composition by XRD and ICP, the correlations between TL intensity and sedimentary environment proxies were analyzed, such as water depth, ratio of FeO to Fe2O3 contents, LOI, and major clay mineral concentration, and it was found the bulk sample's TL signal was stronger than the clay ones. Usually, increase in the clay components may result in the decrease of TL intensity. From the shape of TL curves, the pelagic sediments can be divided into two groups: the majority group has two glow peaks, in general, the first peak is broad and flat, but the second narrow and sharp; the minority group only has a single peak because the first is absent. The peak centers of TL curves are almost fixed, falling in the temperature sections 230 similar to 260 and 390 similar to 405 degrees C respectively. Lorentz model packed in the Origin 7.5 was chosen to deal with the TL curves. From the processing results, three parameters ( H, C and A), corresponding to the height, center, and kurtosis of TL curve, were obtained to describe the curve characteristics. The correlations between TL curve parameters and sedimentary environment proxies were also calculated. On the basis of the above work, the relationship between TL characteristics and sediment type, mineral composition, sedimentary environment of surface sediments was discussed in the study area, and a conclusion is: sediments from the environment of shallower water, higher organic contents and weaker reductivity have stronger TL signals.; Thirty-eight surficial deposit samples were collected from the equatorial North Pacific, and the natural thermoluminescence (TL) characteristics of both bulk and clay fraction samples ( < 2 mu m fractions) were studied by the FJ427 - Al automatic TL Dosimeter for the first time. With the measurements of clay mineral composition, element composition by XRD and ICP, the correlations between TL intensity and sedimentary environment proxies were analyzed, such as water depth, ratio of FeO to Fe2O3 contents, LOI, and major clay mineral concentration, and it was found the bulk sample's TL signal was stronger than the clay ones. Usually, increase in the clay components may result in the decrease of TL intensity. From the shape of TL curves, the pelagic sediments can be divided into two groups: the majority group has two glow peaks, in general, the first peak is broad and flat, but the second narrow and sharp; the minority group only has a single peak because the first is absent. The peak centers of TL curves are almost fixed, falling in the temperature sections 230 similar to 260 and 390 similar to 405 degrees C respectively. Lorentz model packed in the Origin 7.5 was chosen to deal with the TL curves. From the processing results, three parameters ( H, C and A), corresponding to the height, center, and kurtosis of TL curve, were obtained to describe the curve characteristics. The correlations between TL curve parameters and sedimentary environment proxies were also calculated. On the basis of the above work, the relationship between TL characteristics and sediment type, mineral composition, sedimentary environment of surface sediments was discussed in the study area, and a conclusion is: sediments from the environment of shallower water, higher organic contents and weaker reductivity have stronger TL signals. |
| 学科主题 | Oceanography |
| 语种 | 英语 |
| WOS记录号 | WOS:000248159400006 |
| 公开日期 | 2010-12-24 |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/5051]  |
| 专题 | 海洋研究所_海洋地质与环境重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China 2.State Ocean Adm, Inst Oceanog 1, Key Lab Marine Sedimentol & Environm Geol, Qingdao 260061, Peoples R China 3.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Lu, Huahua,Shi Xuefa,Wu Yonghua,et al. A preliminary study on thermoluminescence characteristics of sediments from the North Pacific[J]. ACTA OCEANOLOGICA SINICA,2007,26(3):56-72. |
| APA | Lu, Huahua,Shi Xuefa,Wu Yonghua,Yang Gang,Wei Jianwei,&Ren Xiangwen.(2007).A preliminary study on thermoluminescence characteristics of sediments from the North Pacific.ACTA OCEANOLOGICA SINICA,26(3),56-72. |
| MLA | Lu, Huahua,et al."A preliminary study on thermoluminescence characteristics of sediments from the North Pacific".ACTA OCEANOLOGICA SINICA 26.3(2007):56-72. |
入库方式： OAI收割
来源：海洋研究所
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