Major Element Compositions of the "Wushan Loess"
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摘要: 为了研究"巫山黄土"的地球化学特征, 利用X射线荧光光谱仪对"巫山黄土"样品的常量元素进行测试分析, 结果表明: (1)常量元素SiO2、Al2O3、TFe2O3、Fe2O3和TiO2含量随着剖面中细颗粒粘土含量的变化呈现明显的旋回变化特点, 该特点对"巫山黄土"沉积时的气候演化规律具有一定的指示意义; (2)在化学风化过程中, 元素Si、Al、Fe、K、Mn、Ti之间具有很好的相似性, 表现为明显的正相关, 而它们与元素Ca、P却具明显的差异性, 表现为明显的负相关; (3)沉积物的粒径对部分常量元素地化特征具有一定的控制效应, Al、Fe、Ti等元素主要富集于0.8~2.0 μm黏土粒级沉积物中, 而在40~100 μm的粗粉砂和极细砂粒级中的含量极少; (4)"巫山黄土"常量元素UCC标准化后分布曲线近于平坦线型且靠近UCC分布曲线, 指示其可能为风积成因.Abstract: In this paper, we present the major element compositions of the "Wushan loess", measured by X-ray fluorescence spectrometer. The content of major elements SiO2, Al2O3, TFe2O3, Fe2O3 and TiO2 varies with the content of clay in the profile. Besides the content of these elements displays several obvious circles and could be indicators of climate when the "Wushan loess" deposited. The elements of Si, Al, Fe, K, Mn and Ti show similarity and positive correlation during the weathering process while they are different from Ca and P, with negative correlation. The results reveal that grain size compositions of the sediments could dominate the content of some major elements. Major elements such as Al, Fe and Ti are concentrated in the clay fraction between 0.8 and 2.0 μm instead of the coarse silt and very fine sand fractions (40-100 μm). The UCC-normalized patterns of the "Wushan loess" are almost flat indicating the aeolian origin.
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Key words:
- upper reaches of the Yangtze River /
- "Wushan loess" /
- sediments /
- major elements /
- grain size effect /
- geochemistry
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图 1 “巫山黄土”氧化物含量随深度变化
Fig. 1. Major chemical compositions variation with depth of the "Wushan loess"
图 2 “巫山黄土”部分样品常量元素UCC标准化曲线
Fig. 2. UCC-normalized pattern of major elements of the "Wushan loess"
图 3 “巫山黄土”常量元素氧化物与沉积物粒径相关性曲线
Fig. 3. Major element compositions vary with correlation coefficient of the "Wushan loess"
表 1 “巫山黄土”样品常量元素含量(%)平均值
Table 1. The major elements average content(%) of the "Wushan loess"
样品数(73) Al2O3 TFe2O3 FeO Fe2O3 Na2O MgO CaO SiO2 P2O5 K2O TiO2 MnO 平均值 13.35 5.29 0.69 4.60 1.23 1.60 3.66 66.20 0.13 2.32 0.84 0.09 最大值 15.28 6.15 1.30 5.80 1.38 1.83 12.20 70.49 0.20 2.40 0.89 0.13 最小值 11.83 4.85 0.35 3.82 0.84 1.37 0.93 59.62 0.08 2.17 0.78 0.07 
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表 2 “巫山黄土”氧化物含量相关系数
Table 2. Correlation coefficient matrix of some major chemical compositions of the "Wushan loess"
氧化物 SiO2 Al2O3 TFe2O3 Fe2O3 FeO K2O Na2O CaO MgO MnO TiO2 P2O5 SiO2 1.00 Al2O3 0.65 1.00 TFe2O3 0.55 0.95 1.00 Fe2O3 0.62 0.93 0.95 1.00 FeO -0.58 -0.65 -0.60 -0.82 1.00 K2O 0.63 0.76 0.68 0.59 -0.27 1.00 Na2O 0.21 -0.45 -0.44 -0.43 0.29 -0.11 1.00 CaO -0.95 -0.85 -0.77 -0.81 0.66 -0.74 0.03 1.00 MgO -0.22 0.26 0.38 0.18 0.23 0.38 -0.07 0.04 1.00 MnO 0.71 0.18 -0.01 0.08 -0.22 0.43 0.43 -0.56 -0.37 1.00 TiO2 0.93 0.80 0.68 0.75 -0.67 0.68 -0.13 -0.96 -0.22 0.59 1.00 P2O5 -0.73 -0.68 -0.56 -0.7 0.76 -0.39 0.36 0.77 0.47 -0.44 -0.86 1.00
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Chen, J., Ji, J.F., Qiu, G., et al., 1997. Geochemical Research of Chemical Weathering Degree in the Luochuan Loess. Science in China (Series D), 27(6): 531-536(in Chinese). Chen, Y., Chen, J., Liu, L.W., 2001. Chemical Composition and Characterization of Chemical Weathering of Late Tertiary Red Clay in Xifeng, Gansu Province. Journal of Geomechanics, 7(2): 167-175(in Chinese with English abstract). http://d.wanfangdata.com.cn/periodical/dzlxxb200102012 Chen, Y.Y., Li, X.S., Han, Z.Y., et al., 2008. Chemical Weathering Intensity and Element Migration Features of the Xiashu Loess Profile in Zhenjiang. Journal Geographical Sciences, 3(18): 341-352. doi: 10.1007/s11442-008-0341-9 Diao, G.Y., Wen, Q.Z., 1999. The Migration Series of Major Elements during Loess Pedogenesis. Geology-Geochemistry, 27(1): 21-26(in Chinese with English abstract). http://en.cnki.com.cn/Article_en/CJFDTOTAL-DZDQ199901003.htm Ding, M., Pang, J.L., Huang, C.C., et al., 2011. Geochemical Characteristics of Major Elements in Holocene Loess-Paleosol Sequence in the Eastern Guanzhong Basin, Shaanxi, China. Journal of Desert Research, 31(4): 862-867(in Chinese with English abstract). Gu, Z.Y., Han, J.M., Liu, T.S., 2000. Progress in Geochemical Research on the Loess and Other Quaternary Deposits in China. Quaternary Research, 20(1): 41-55(in Chinese with English abstract). http://en.cnki.com.cn/Article_en/CJFDTOTAL-DSJJ200001009.htm Guan, Q.Y., 2006. Study of the Highly Unstable Climate in Last Glacial Cycle. Lanzhou University, Lanzhou(in Chinese with English abstract). Kang, J.C., Mu, D.F., 1998. Geochemical Characteristics of the North Plateau Loess Section, Gansu Linxia. Journal of Lanzhou University (Nature Science), 34(2): 119-125(in Chinese with English abstract). http://www.researchgate.net/publication/292100407_Geochemical_characteristics_of_the_north_plateau_loess_section_Gansu_Linxia Lei, X.Y., Yue, L.P., 1997. The Characteristics of the Late Pleistocene Loess-Paleosol Sequence and Their Records of Paleoenvironmental Changes in Guanzhong, Shaanxi. Geological Review, 43(5): 550-560(in Chinese with English abstract). http://en.cnki.com.cn/Article_en/CJFDTOTAL-DZLP199705019.htm Li, C.A., Zhang, Y.F., Yuan, S.Y., et al., 2010. Grain Size Characteristics and Origin of the Wushan Loess at Wushan Area. Earth Science—Journal of China University of Geosciences, 35(5): 879-884(in Chinese with English abstract). doi: 10.3799/dqkx.2010.102 Li, C.X., Song, Y.G., Wang, L.M., 2012. Geochemical Characteristics and Paleo-Environmental Significance of the Loess in the Ili Region, Xinjiang. Xinjiang Geology, 30(1): 103-108(in Chinese with English abstract). http://en.cnki.com.cn/Article_en/CJFDTOTAL-XJDI201201021.htm Li, X.S., Han, Z.Y., Yang, S.Y., 2007. Chemical Weathering Intensity and Element Migration Features of the Xiashu Loess Profile in Zhenjiang. Acta Geographica Sinica, 62 (11): 1174-1176(in Chinese with English abstract). http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=dlxb200711006 Li, X.S., Yang, D.Y., Lu, H.Y., 1999. Oxide-Geochemistry Features and Paleoclimatic Records of the Aeolian-Dust Depositional Sequence in Southern Anhui Province. Marine Geology & Quaternary Geology, 19(4): 75-82(in Chinese with English abstract). http://www.cqvip.com/main/zcps.aspx?c=1&id=3713401 Li, Z.H., Wang, Y.H., 1998. The Geochemical Record of Loess Deposit and Paleoclimatic Evolution. Marine Geology & Quaternary Geology, 18(2): 41-47(in Chinese with English abstract). http://en.cnki.com.cn/Article_en/CJFDTOTAL-HYDZ802.005.htm Liang, M.Y., Guo, Z.T., Gu, Z.Y., 2006. Geochemical Characteristics of the Miocene Eolian Deposits and Comparison with the Pliocene and Quaternary Eolian Deposits. Quaternary Research, 26(4): 657-664(in Chinese with English abstract). http://en.cnki.com.cn/Article_en/CJFDTOTAL-DSJJ200604022.htm Liu, Y.J., Cao, L.M., Li, Z.L., et al., 1984. Element Geochemistry. Science Press, Beijing (in Chinese). OuYang, Z.Y., 2001. Chemical Processes and Material Evolution of the Earth. Shangdong Education Press, Jinan, 6(in Chinese). Qiao, Y.S., Zhao, Z.Z., Wang, Y., et al., 2010. Variations of Geochemical Compositions and the Paleoclimatic Significance of Loess-soil Sequence from Ganzi County of Western Sichuan Province, China. Chinese Science Bulletin, 55(3): 255-260(in Chinese). doi: 10.1360/csb2010-55-3-255 Taylor, S.R., McLennan, S.M., 1985. The Continental Crust: It's Composition and Evolution. Blackwell Science Pub., Palo Alto, 277-312. Wang, L., Liu, D.Y., Liu, M., et al., 2010. Geochemical Characteristics of Major Elements of Ganzi Loess in the Western Sichuan Province. Periodical of Ocean University of China, 40(Suppl. ): 221-225(in Chinese with English abstract). http://en.cnki.com.cn/Article_en/CJFDTOTAL-QDHY2010S1037.htm Wang, Y., Wei, F.S., 1995. Soil Environment Element Chemistry. China Environmental Science Press, Beijing, 10 (in Chinese). Wen, Q.Z., 1989. Geochemistry of China Loess. Science Press, Beijing, 63 (in Chinese). Yang, R.X., Li, Z.F., Zhang, L., et al., 2011. Elements Distribution of the Dengjia Loess Section, Central Henan and Its Environmental Implications. Marine Geology & Quaternary Geology, 31(2): 130-134(in Chinese with English abstract). http://adsabs.harvard.edu/abs/2011MGQG...31..129Y Yu, Y.P., Wang, H.B., Liu, X.B., et al., 2012. Geochemical Characteristics of Loess Deposition since Last Interglacial at Desert Margin and Its Provenance and Climatic Implications. Acta Sedimentologica Sinica, 30(2): 356-365(in Chinese with English abstract). http://en.cnki.com.cn/Article_en/CJFDTOTAL-CJXB201202018.htm Zhang, H.C., Li, J.J., Ma, Y.Z., et al., 1997. A Study on Elemental Geochemical Characters of the Wuwei Loess Section in the South Vicinity of Tengger Desert. Acta Sedimentologica Sinica, 15(4): 152-158(in Chinese with English abstract). http://mnras.oxfordjournals.org/content/411/1/9.full Zhang, Y.F., Li, C.A., Shao, L., et al., 2010. Magnetic Fabric Characteristics and Implications for Its Origin of "Wushan Loess". Earth Science—Journal of China University of Geosciences, 35(5): 885-890(in Chinese with English abstract). doi: 10.3799/dqkx.2010.103 Zhao, J.H., Wang, D., Fan, B.S., et al., 2004. Geochemical Characteristics of the Loess Deposit at Yan'an and Its Implication to Changes of East Asia Summer Monsoon during the Past 130 ka. Geochemica, 33(5): 495-500(in Chinese with English abstract). http://en.cnki.com.cn/Article_en/CJFDTOTAL-DQHX200405009.htm 陈骏, 季峻峰, 仇纲, 等, 1997. 陕西洛川黄土化学风化程度的地球化学研究. 中国科学(D辑), 27(6): 531-536. doi: 10.3321/j.issn:1006-9267.1997.06.004 陈旸, 陈骏, 刘连文, 2001. 甘肃西峰晚第三纪红粘土的化学组成及化学风化特征. 地质力学学报, 7(2): 167-175. doi: 10.3969/j.issn.1006-6616.2001.02.012 刁桂仪, 文启忠, 1999. 黄土风化成土过程中主要元素迁移序列. 地质地球化学, 27(1): 21-26. https://www.cnki.com.cn/Article/CJFDTOTAL-DZDQ199901003.htm 丁敏, 庞奖励, 黄春长, 等, 2011. 关中东部全新世黄土-古土壤序列常量元素地球化学特性研究. 中国沙漠, 31(4): 862-867. https://www.cnki.com.cn/Article/CJFDTOTAL-ZGSS201104010.htm 顾兆炎, 韩家楙, 刘东生, 2000. 中国第四纪黄土地球化学研究进展. 第四纪研究, 20(1): 41-55. https://www.cnki.com.cn/Article/CJFDTOTAL-DSJJ200001009.htm 管清玉, 2006. 末次冰期旋回气候高度不稳定性研究. 兰州: 兰州大学. 康建成, 穆德芬, 1998. 甘肃临夏北塬黄土剖面地球化学特征. 兰州大学学报: 自然科学版, 34(2): 119-125. https://www.cnki.com.cn/Article/CJFDTOTAL-LDZK802.021.htm 雷祥义, 岳乐平, 1997. 陕西关中晚更新世黄土-古土壤序列特征及其记录的古环境变迁. 地质论评, 43(5): 550-560. https://www.cnki.com.cn/Article/CJFDTOTAL-DZLP199705019.htm 李长安, 张玉芬, 袁胜元, 等, 2010. "巫山黄土"粒度特征及其对成因的指示. 地球科学——中国地质大学学报, 35(5) : 879-884. https://www.cnki.com.cn/Article/CJFDTOTAL-DQKX201005018.htm 李传想, 宋友桂, 王乐民, 2012. 新疆伊犁黄土元素地球化学特征及古环境意义. 新疆地质, 30(1): 103-108. https://www.cnki.com.cn/Article/CJFDTOTAL-XJDI201201021.htm 李徐生, 韩志勇, 杨守业, 等, 2007. 镇江下蜀土剖面的化学风化强度与元素迁移特征. 地理学报, 62 (11): 1174-1176. https://www.cnki.com.cn/Article/CJFDTOTAL-ZGDE200803008.htm 李徐生, 杨达源, 鹿化煜, 1999. 皖南风尘堆积序列氧化物地球化学特征与古气候记录. 海洋地质与第四纪地质, 19(4): 75-82. https://www.cnki.com.cn/Article/CJFDTOTAL-HYDZ199904012.htm 李铮华, 王玉海, 1998. 黄土沉积的地球化学记录与古气候演化. 海洋地质与第四纪地质, 18(2): 41-47. https://www.cnki.com.cn/Article/CJFDTOTAL-HYDZ802.005.htm 梁美艳, 郭正堂, 顾兆炎, 2006. 中新世风尘堆积的地球化学特征及与上新世和第四纪风尘堆积的比较. 第四纪研究, 26(4): 657-664. https://www.cnki.com.cn/Article/CJFDTOTAL-DSJJ200604022.htm 刘英俊, 曹励明, 李兆麟, 等, 1984. 元素地球化学. 北京: 科学出版社. 欧阳自远, 2001. 地球的化学过程与物质演化. 济南: 山东教育出版社, 6. 乔彦松, 赵志中, 王燕, 等, 2010. 川西甘孜黄土-古土壤序列的地球化学演化特征及其古气候意义. 科学通报, 55(3): 255-260. https://www.cnki.com.cn/Article/CJFDTOTAL-KXTB201003008.htm 王玲, 刘冬雁, 刘明, 等, 2010. 川西高原甘孜黄土A剖面常量元素地球化学特征初步研究. 中国海洋大学学报, 40(增刊): 221-225. https://www.cnki.com.cn/Article/CJFDTOTAL-QDHY2010S1037.htm 王云, 魏复盛, 1995. 土壤环境元素化学. 北京: 中国环境科学出版社, 10. 文启忠, 1989. 中国黄土地球化学. 北京: 科学出版社, 63. 杨瑞霞, 李志飞, 张莉, 等, 2011. 河南嵩山东麓邓家剖面元素的地球化学特征及环境意义. 海洋地质与第四纪地质, 31(2): 130-134. https://www.cnki.com.cn/Article/CJFDTOTAL-HYDZ201102020.htm 于英鹏, 汪海斌, 刘现彬, 等, 2012. 末次间冰期以来沙漠边缘黄土沉积的地球化学特征初探. 沉积学报, 30(2): 356-365. https://www.cnki.com.cn/Article/CJFDTOTAL-CJXB201202018.htm 张虎才, 李吉均, 马玉贞, 等, 1997. 腾格里沙漠南缘武威黄土沉积元素地球化学特征. 沉积学报, 15(4): 152-158. https://www.cnki.com.cn/Article/CJFDTOTAL-CJXB704.025.htm 张玉芬, 李长安, 邵磊, 等, 2010. "巫山黄土"的磁组构特征及成因. 地球科学——中国地质大学学报, 35 (5): 885-890. https://www.cnki.com.cn/Article/CJFDTOTAL-DQKX201005019.htm 赵锦慧, 王丹, 樊宝生, 等, 2004. 延安地区黄土堆积的地球化学特征与最近13万年东亚夏季风气候的波动. 地球化学, 33(5): 495-500. https://www.cnki.com.cn/Article/CJFDTOTAL-DQHX200405009.htm -
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