GEOCHEMISTRY OF MAJOR ELEMENTS IN THE SURFACE SEDIMENTS OF THE OFFSHORE AREA OF SHANDONG PENINSULA AND ITS GEOLOGICAL IMPLICATIONS
-
摘要: 通过对山东半岛近海274个表层沉积物的粒度和常量元素的系统研究,探讨了该海域常量元素地球化学特征、空间分布规律及其影响因素。研究表明,山东半岛近海海域表层沉积物的常量元素较为稳定,主要由SiO2、Al2O3、Fe2O3、MgO、CaO、Na2O和K2O组成,其中SiO2和Al2O3含量最高,分别为65.3%和12.5%;常量元素含量与沉积物类型密切相关,SiO2含量随沉积物类型变粗而逐步降低;Al2O3、Fe2O3、MgO、MnO、P2O5和K2O含量随沉积物类型变细逐步增大;TiO2和Na2O含量基本不受沉积物粒度的影响;受黄河沉积物的影响,CaO含量在黏土类型沉积物中迅速升高。常量元素相关性和R型正交旋转因子分析表明,研究区内常量元素可划分为3类,第1类包含SiO2、Al2O3、Fe2O3、MgO、K2O、TiO2、P2O5、TOC,代表了陆源碎屑沉积;第2类主要由CaO、CaCO3组成,代表了海洋生物作用;第3类由Na2O、MnO组成,代表了海洋化学沉积作用。研究区内大部分表层沉积物的化学风化指数(CIA)为50~65,沉积物的物源变化可能对CIA起主要的控制作用。CIA和TiO2/Al2O3比值共同指示黄河源沉积物主要分布在山东半岛沿岸海域,与陆源因子F1的得分系数基本一致,其分布模式与研究区海洋环流和地形特征密切相关。Abstract: In this study, a total of 274 surface sediments from the offshore area of Shandong Peninsula were collected and analyzed for grain-size, total organic carbon (TOC), and major elementss. Results show that SiO2 is the highest major element, followed by Al2O3 as the second. These two major elements make up 77.8% of the total major elements. The composition of major elements depends upon the type of sediment or grain-size. SiO2 is usually enriched in the coarse-grained sediments, whereas Al2O3、Fe2O3、MgO、MnO、P2O5 and K2O are relatively concentrated in fine-grained sediments. However, Na2O and TiO2 are independent from sediment types. The results of correlation and R-factor analysis suggested that the distribution of major element in the surface sediments from the offshore area of Shandong Peninsula can be classified to three groups. The first group consists of SiO2、Al2O3、Fe2O3、MgO、K2O、TiO2、P2O5、TOC, the second includes CaO and CaCO3, and Na2O and MnO belong to the last groups. These three groups may probably represent terrigenous, marine biogenous and marine authigenic sediments respectively. The chemical weathering index of the surface sediments varies from 50-65, depending upon their provenance. The CIA and TiO2/Al2O3 values suggest that the Huanghe sediments are mainly deposited along the offshore area of Shandong Peninsula, controlled by the coastal currents and the sea bottom geomorphology.
-
Key words:
- major element /
- provenance /
- Huanghe /
- Shandong Peninsula
-
-
[1] 高抒. 海岸与陆架沉积:动力过程、全球变化影响和地层记录[J]. 第四纪研究, 2010, 30(5):856-863.
[GAO Shu. Coastal and shelf sedimentation in association with dynamic processes, global change impacts, and stratigraphic records:an overview of the scientific problems[J]. Quaternary Science, 2010, 30(5):856-863.]
[2] 吴德星, 兰健. 中国东部陆架边缘海海洋物理环境演变及其环境效应[J]. 地球科学进展, 2006, 21(7):667-672.
[WU Dexing, LAN Jian. Marine physical variations in eastern marginal seas of China and their environmental impacts[J]. Advances in Earth Science, 2006, 21(7):667-672.]
[3] 李广雪, 杨子赓, 刘勇. 中国东部陆架海底沉积环境成因研究[M]. 北京:科学出版社, 2005.[LI Guangxue, YANG Zigeng, LIU Yong. Sediment Distribution Map of the East China Seas[M]. Beijing:Science Press, 2005.]
[4] Martin J M, Zhang J, Shi M C, et al. Actual flux of the Huanghe (Yellow River) sediment to the Western Pacific ocean[J]. Netherlands Journal of Sea Research, 1993, 31(3):243-254.
[5] Qin Y S, Li F. Study of influence of sediment loads discharged from the Huanghe River on sedimentation in the Bohai Sea and Huanghai Sea[C]//Proceedings of international symposium on sedimentation on the continental shelf, with special reference to the East China Sea, Hangzhou, China. China Ocean Press,1983:91-101.
[6] Yang Z S, Liu J P. A unique Yellow River-derived distal subaqueous delta in the Yellow Sea[J]. Marine Geology, 2007, 240(1-4):169-176.
[7] Bi N S, Yang Z S, Wang H J, et al. Seasonal variation of suspended-sediment transport through the southern Bohai Strait[J]. Estuarine, Coastal and Shelf Science, 2011, 93(3):239-247.
[8] 秦蕴珊, 李凡. 黄河入海泥沙对渤海和黄海沉积作用的影响[J]. 海洋科学集刊, 1986, 27:124-134.[QIN Yunshan, LI Fan. Study of the influence of sediment loads discharged from Huanghe River on sedimentation in the Bohai and Yellow Seas[J]. Studia Marine Sinica, 1986
, 27:124-134.]
[9] Liu J P, Milliman J D, Gao S, et al. Holocene development of the Yellow River's subaqueous delta, North Yellow Sea[J]. Marine Geology, 2004, 209(1-4):45-67.
[10] Liu J P, Milliman J D, Gao S. The Shandong mud wedge and post-glacial sediment accumulation in the Yellow Sea[J]. Geo-Marine Letters, 2002, 21(4):212-218.
[11] Liu J, Saito Y, Wang H, et al. Sedimentary evolution of the Holocene subaqueous clinoform off the Shandong Peninsula in the Yellow Sea[J]. Marine Geology, 2007, 236(3-4):165-187.
[12] Milliman J D, Qin Y S, Park Y. Sediments and sedimentary processes in the Yellow and East China Seas[C]//Sedimentary facies in the active plate margin. Tokyo:Terra Scientific Publishing Company, 1989:233-249.
[13] 孔祥淮, 刘健, 李巍然, 等. 山东半岛东北部滨浅海区表层沉积物粒度及矿物成分[J]. 海洋地质与第四纪地质, 2006, 26(3):21-29.
[KONG Xianghuai, LIU Jian, LI Weiran, et al. Grain-size characters and mineral components of surface sediments in the offshore area of northeastern Shandong Peninsula[J]. Marine Geology and Quanternary Geology, 2006, 26(3):21-29.]
[14] 孔祥淮, 刘健, 李巍然, 等. 山东半岛东北部滨浅海区表层沉积物的稀土元素及其物源判别[J]. 海洋地质与第四纪地质, 2007, 27(3):51-59.
[KONG Xianghuai, LIU Jian, LI Weiran, et al. Geochemistry of REE and provenance of surface sediments in the littoral area of the northeastern Shandong Peninsula[J]. Marine Geology and Quaternary Geology, 2007, 27(3):51-59.]
[15] Liu J, Saito Y, Kong X, et al. Geochemical characteristics of sediment as indicators of post-glacial environmental changes off the Shandong Peninsula in the Yellow Sea[J]. Continental Shelf Research, 2009, 29(7):846-855.
[16] 李国刚, 牟信侃, 胡邦琦, 等. 山东半岛近海表层沉积物黏土矿物分布及组合特征[J]. 海洋地质与第四纪地质, 2010, 30(4):67-72.
[LI Guogang, MU Xinkang, HU Bangqi, et al. Distribution pattern and assemblage feature of clay minerals in surface sediments from the coastal area of Shandong Peninsula[J]. Marine Geology and Quanternary Geology, 2010, 30(4):67-72.]
[17] 陈志华, 石学法, 王相芹. 南黄海表层沉积物碳酸盐及Ca、Sr、Ba分布特征[J]. 海洋地质与第四纪地质, 2000, 20(4):9-16.
[CHEN Zhihua, SHI Xuefa, WANG Xiangqin. Distribution characteristics of carbonate as well as Ca, Sr and Ba in the surface sediments in the south Yellow Sea[J]. Marine Geology and Quaternary Geology, 2000, 20(4):9-16.]
[18] 蓝先洪, 王红霞, 李日辉, 等. 南黄海沉积物常量元素组成及物源分析[J]. 地学前缘, 2007, 14(4):197-203.
[LAN Xianhong, WANG Hongxia, LI Rihui, et al. Major elements composition and provenance analysis in the sediments of the South Yellow Sea[J]. Earth Science Frontiers, 2007, 14(4):197-203]
[19] 蓝先洪, 王红霞, 张志珣, 等. 南黄海表层沉积物稀土元素分布与物源关系[J]. 中国稀土学报, 2006, 24(6):745-749.
[LAN Xianhong, WANG Hongxia, ZHANG Zhixun, et al. Distributions of rare earth elements and provenance relations in the surface sediments of the South Yellow Sea[J]. Journal of the Chinese Rare Earth Society, 2006, 24(6):745-749.]
[20] 蓝先洪, 张志珣, 李日辉, 等. 南黄海表层沉积物微量元素地球化学特征[J]. 海洋地质与第四纪地质, 2006, 26(3):45-51.
[LAN Xianhong, ZHANG Zhixun, LI Rihui, et al. Geochemical characteristics of trace elements in the surface sediments of the south Yellow Sea[J]. Marine Geology and Quaternary Geology, 2006, 26(3):45-51.]
[21] 尹秀珍, 刘万洙, 蓝先洪, 等. 南黄海表层沉积物的碎屑矿物、地球化学特征及物源分析[J]. 吉林大学学报:地球科学版, 2007, 37(3):491-499.
[YIN Xiuzheng, LIU Wanzhu, LAN Xianhong, et al. Detrital minerals and geochemistry of the surface soft sediments and their Provenance, South Yellow Sea, China[J]. Journal of Jilin University (Earth Science Edition), 2007, 37(3):491-499.]
[22] Lim D I, Jung H S, Choi J Y, et al. Geochemical compositions of river and shelf sediments in the Yellow Sea:Grain-size normalization and sediment provenance[J]. Continental Shelf Research, 2006, 26(1):15-24.
[23] Yang S, Youn J S. Geochemical compositions and provenance discrimination of the central south Yellow Sea sediments[J]. Marine Geology, 2007, 243(1-4):229-241.
[24] Youn J, Kim T J. Geochemical composition and provenance of muddy shelf deposits in the East China Sea[J]. Quaternary International, 2010, 230(1-2):3-12.
[25] 许东禹, 刘锡清, 张训华. 中国近海地质[M]. 北京:地质出版社, 1997.[XU Dongyu, LIU Xiqing, ZHANG Xunhua. Marginal Sea Geology of China[M]. Beijing:Geology Press, 1997.]
[26] Milliman J D, Meade R H. World-Wide delivery of river sediment to the oceans[J]. Journal of Geology, 1983, 91(1):1-21.
[27] Gaillardet J, Dupr B, Louvat P, et al. Global silicate weathering and CO2 consumption rates deduced from the chemistry of large rivers[J]. Chemical Geology, 1999, 159(1-4):3-30.
[28] Taylor S R, Mclennan S M. The Continental Crust:Its Composition and Evolution[M]. Blackwell (Oxford), 1985.
[29] 杜德文, 石学法, 孟宪伟, 等. 黄海沉积物地球化学的粒度效应[J]. 海洋科学进展, 2003, 21(1):78-82.
[DU Dewen, SHI Xuefa, MENG Xianwei, et al. Geochemical granularity effect of sediment in the Yellow Sea[J]. Advances in Marine Science, 2003, 21(1):78-82.]
[30] 杨作升, 王海成, 乔淑卿. 黄河与长江入海沉积物中碳酸盐含量和矿物颗粒形态特征及影响因素[J]. 海洋与湖沼, 2009, 40(6):674-681.
[YANG Zuosheng, WANG Haicheng, QIAO Shuqing. Carbonate minerals in estuary sediments of the Changjiang(Yangtze River) and Huanghe(Yellow River):the content, morphology, and influential factors[J]. Oceanologia et Limnologia Sinica, 2009, 40(6):674-681.]
[31] 范德江, 杨作升, 王文正. 长江、黄河沉积物中碳酸盐组成及差异[J]. 自然科学进展, 2002, 12(1):60-64.
[FAN Dejiang, YANG Zuosheng, WANG Wenzheng. Carbonate minerals of the sediments from the Yangtze and Yellow Rivers and their differences[J]. Progress in Natural Science, 2002, 12(1):60-64.]
[32] 刘升发, 石学法, 刘焱光, 等. 东海内陆架泥质区表层沉积物常量元素地球化学及其地质意义[J]. 海洋科学进展, 2010, 28(1):80-86.
[LIU Shengfa, SHI Xuefa, LIU Yangguang, et al. Geochemical characteristics and geological significance of major elements in the surface sediments from the inner shelf mud area of the East China Sea[J]. Advances in Marine Science, 2010, 28(1):80-86.]
[33] YANG S, JUNG H-S, LI C. Two unique weathering regimes in the Changjiang and Huanghe drainage basins:geochemical evidence from river sediments[J]. Sedimentary Geology, 2004, 164(1-2):19-34.
[34] 赵一阳, 鄢明才. 中国浅海沉积物地球化学[M]. 北京:科学出版社, 1994.[ZHAO Yiyang, YAN Mingcai. Geochemistry of Sediments of the China Shelf Sea[M]. Beijing:Science Press, 1994.]
[35] Nesbitt H W, Young G M. Early Proterozoic climates and plate motions inferred from major element chemistry of lutites[J]. Nature, 1982, 299(5885):715-717.
[36] 王中波, 杨守业, 李从先. 南黄海中部沉积物岩心常量元素组成与古环境[J]. 地球化学, 2004, 33(5):483-490.
[WANG Zhongbo, YANG Shouye, LI Chongxian. Major elemental compositions and paleoenvironmental changes of the core sediments in the southern Yellow Sea[J]. Geochimica, 2004, 33(5):483-490.]
[37] LI C, YANG S. Is chemical index of alteration (CIA) a reliable proxy for chemical weathering in global drainage basins?[J]. American Journal of Science, 2010, 310(2):11-27.
[38] 杨守业, Hoi-Soo J, 李从先, 等. 黄河、长江与韩国Keum、Yeongsan江沉积物常量元素地球化学特征[J]. 地球化学, 2004, 33(1):99-105.
[YANG Shouye, Hoi-Soo J, LI Chongxian, et al. Major element geochemistry of sediments from Chinese and Korean rivers[J]. Geochimica, 2004, 33(1):99-105.]
[39] 鲍献文, 李真, 王勇智, 等. 冬、夏季北黄海悬浮物分布特征[J]. 泥沙研究, 2010, 2:48-56.[BAO Xianwen, LI Zhen, WANG YONGZHI, et al. Sediment distribution features in the North Yellow Sea during summer and winter[J]. Journal of Sediment Research, 2010
, 2:48-56.]
[40] 胡邦琦, 李国刚, 李军, 等. 黄海、渤海铅-210沉积速率的分布特征及其影响因素[J]. 海洋学报, 2011, 33(6):125-133.
[HU Bangqi, LI Guogang, LI Jun, et al. Spatial variability of the 210Pb sedimentation rates in the Bohai and Huanghai Seas and its influencing factors[J]. Acta Oceanologica Sinica, 2011, 33(6):125-133.]
-
计量
- 文章访问数: 1264
- PDF下载数: 2
- 施引文献: 0
下载: