RARE EARTH ELEMENTS GEOCHEMISTRY AND PROVENANCE OF THE SEDIMENTS FROM CORE XH-CL16 IN THE XISHA TROUGH, SOUTH CHINA SEA
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摘要: 西沙海槽是我国南海北部重要的天然气水合物勘探远景区。然而,目前对西沙海槽区沉积物的物源分析仍然存在众多争议。对西沙海槽XH-CL16柱状沉积物的稀土元素地球化学分析,显示该柱状沉积物的ΣREE介于131~171×10-6之间,表现为轻稀土相对富集,(La/Yb)N为9.5,具有明显的Eu负异常,δEu值在0.66~0.79之间。其稀土元素配分模式显著区别于大洋玄武岩,具有明显的陆壳特征,并且该沉积物具有相似于珠江口沉积物、红河沉积物以及黄土的稀土元素配分形态,暗示西沙海槽区沉积物主要为陆源沉积,而且可能是多物源多方式传输的结果。此外,通过该柱状沉积物中CaCO3含量变化特征与同海域标准碳酸盐地层学时标的对比,显示该柱状沉积物主要为MIS3期以来的沉积。而其中MIS2期沉积物表现为较MIS1和MIS3期沉积物更高的ΣREE和Ti含量,暗示西沙海槽在MIS2期时有更多陆源组分的输入。Abstract: The Xisha Trough is an important gas hydrate exploration prospect in the northern South China Sea. The provenance of Xisha Trough sediments remains controversial. The sediment from Core XH-CL16 in the Xisha Trough are characterized by relatively high total rare earth element contents (ΣREE=131~171 ppm), slightly enriched light REE ([La/Yb]N=9.5) and clearly negative Eu anomalies (δEu=0.66~0.79). Their chondrite-normalized REE patterns are similar to the upper continental crust and the sediments from Chinese loess, the Pearl River and Mekong River, but different from the normal middle oceanic ridge basalt (N-MORB) and deep-sea clay. Thus, the sediments of the Xisha Trough show terrestrial affinity, which probably result from multi-provenance and multi-transmission. Contrasting with the standard carbonate formation in the Xisha Trough, the variations in CaCO3 contents for the sediments from Core XH-CL16 suggests that they were deposited since approximately MIS3. In addition, sediments in MIS2 have higher ΣREE, CaCO3 and Ti contents than those of sediments in MIS1 and MIS3, which may indicate more continental contribution during the MIS2.
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Keywords:
- rare earth elements /
- marine sediments /
- sediment provenance /
- South China Sea /
- Xisha Trouth
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[1] Ding Zhongli. The South China Sea:Paleoceanography and Sedimentology[J]. Eos, Transactions American Geophysical Union, 2010, 91(8):80.
[2] 汪品先. 南海——我国深海研究的突破口[J]. 热带海洋学报, 2009, 28(3):1-4. [WANG Pinxian. Toward scientific breakthrough in the South China Sea[J]. Journal of tropical oceanography, 2009, 28(3):1-4.]
[3] 郑洪波, 杨文光, 贺娟, 等. 南海的氧同位素3期[J]. 第四纪研究, 2008, 28(1):442-448. [ZHENG Hongbo, YANG Wenguang, HE Juan, et al. Marine isotope stage 3(MIS3) of South China Sea[J]. Quaternary sciences, 2008, 28(1):442-448.]
[4] Clift P, Lee J I, Clark M K, et al. Erosional response of South China to arc rifting and monsoonal strengthening; a record from the South China Sea[J]. Marine Geology, 2002, 184(3):207-226.
[5] Li X H, Wei G J, Shao L, et al. Geochemical and Nd isotopic variations in sediments of the South China Sea:a response to Cenozoic tectonism in SE Asia[J]. Earth and Planetary Science Letters, 2003, 211(3):207-220.
[6] Li Q Y, Jian Z M, Su X, et al. Late Oligocene rapid transformations in the South China Sea[J]. Marine Micropaleontology, 2005, 54(1):5-25.
[7] 邵磊, 庞雄, 陈长民, 等. 南海北部渐新世末沉积环境及物源突变事件[J]. 中国地质, 2007, 34(6):1022-1031. [SHAO Lei, PANG Xiong, CHEN Chang-min, et al. Terminal Oligocene sedimentary environments and abrupt provenance change event in the northern South China Sea[J]. Geology in China, 2007, 34(6):1022-1031.]
[8] 刘志飞, 李夏晶, Christophe C, 等. 南海北部末次冰盛期以来高分辨率黏土矿物记录及其时间序列物源区分析[J]. 科学通报, 2010, 55(29):2852-2862. [LIU Zhifei, LI Xiajing, Christophe C, et al. A high-resolution clay mineralogical record in the northern South China Sea since the Last Glacial Maximum, and its time series provenance analysis[J]. Chinese Science Bull, 2010, 55,(29):2852-2862.]
[9] 杨涛, 蒋少涌, 葛璐, 等. 南海北部陆坡西沙海槽XS-01站位沉积物孔隙水的地球化学特征及其对天然气水合物的指示意义[J]. 第四纪研究, 2006, 26(3):442-448. [YANG Tao, JIANG Shaoyong, GE Lu, et al. Geochemical characteristics of sediment pore water from site XS-01 in the Xisha Trough of South China Sea and their significance for gas hydarate occurrence[J]. Quaternary Sciences, 2006, 26(3):442-448.]
[10] 冯文科, 薛万俊, 杨达源, 等. 南海北部晚第四纪地质环境[M]. 广州:广东科技出版社, 1988.[FENG Wenke, XUE Wanjun, YANG Dayuan, et al. Geoenvironment of northern South China Sea in Late Quaternary[M]. Guangzhou:Guangdong Science and Technology Press,1988.] [11] 陈铃, 彭学超, 谬宛岑. 南海北部陆坡区地震地层解释[C]//南海地质研究(七). 武汉:中国地质大学出版社,1995.[CHEN Ling, PENG Xuechao, MIU Wancen. Stratimagic interpretation in northern slope of South China Sea[C]//Geology of South China Sea (7). China University of Geosciences Press,Wuhan, 1995.] [12] 王淑红, 颜文, 宋海斌. 末次盛冰期以来西沙海槽天然气水合物储库变化及其对环境的影响[J]. 地球科学-中国地质大学学报, 2008, 33(1):74-82. [WANG Shuhong, YAN Wen, SONG Haibin. The change of gas hydrate reservoir and its effect on environment in Xisha Trough since the last glacial maximum[J]. Earth Science-Journal of China University of Geosciences, 2008, 33(1):74-82.]
[13] Hannigan R E, Sholkovit z E R. The development of middle rare earth element enrichments in freshwaters:weathering of phosphate minerals[J]. Chemical Geology, 2001, 175(3-4):495-508.
[14] Munksgaard N C, Lim K, Parry D L. Rare earth elements as provenance indicators in North Australian estuarine and coastal marine sediments[J]. Estuarine, Coastal and Shelf Science, 2003, 57(3):399-409.
[15] 高爱国, 陈志华, 刘炎光, 等. 楚科奇海表层沉积物的稀土元素地球化学特征[J]. 中国科学D辑, 2003, 33(2):148-153. [GAO aiguo, CHEN Zhihua, LIU Yanguang, et al. Rare earth elements geochemical characteristics of the Chukchi Sea surface sediments[J]. Science China (D), 2003, 33(2):148-153.]
[16] 苗卫良, 邵磊, 庞雄, 等. 南海北部渐新世以来的稀土元素地球化学特征及其意义[J]. 海洋地质与第四纪地质, 2008, 28(2):71-78. [MIAO Weiliang, SHAO Lei, PANG Xiong, et al. REE geochemical characteristics in the northern South China Sea since the Oligocene[J]. Marine Geology and Quaternary Geology, 2008, 28(2):71-78.]
[17] Liu B L, Wang Y P, Su X, et al. Elemental geochemistry of northern slope sediments from the South China Sea:Implications for provenance and source area weathering since Early Miocene[J]. Chemie der Erde, 2013, 73:61-74.
[18] 熊斌辉. 构造控制下的西沙海槽沉积模式[J]. 海洋石油, 2013, 33(1):1-6. [XIONG Huibin. Xisha trough depositional model under controlling by structure[J]. Offshore oil, 2013, 33(1):1-6.]
[19] 刘坚, 陆红锋, 苏新, 等. 南海北部BY1钻孔沉积物元素地球化学特征及其古环境意义[J]. 热带海洋学报, 2012, 31(5):6-11. [LIU Jian, LU Hongfeng, SU Xin, et al. Element geochemistry of Core BY1 from the northern South China Sea and its paleoenvironmental implication[J]. Journal of Tropical Oceanography, 2012, 31(5):6-11.]
[20] 蔡观强, 彭学超, 陈泓君, 等. 南海西沙海槽83PC柱状沉积物组成特征及其古环境意义[J]. 海洋地质与第四纪地质, 2012, 32(1):77-84. [CAI Guanqiang, PENG Xuechao, Chen Hongjun, et al. The component characteristics and paleoenvironmental significances for sediments in Core 83PC from the Xisha Trough, South China Sea[J]. Marine Geology and Quaternary Geology, 2012, 32(1):77-84.]
[21] Rudnick R L, Gao San. Composition of the continental crust[J]. Treatise on Geochemistry, 2003, 3:1-64.
[22] 文启忠. 中国黄土地球化学[M]. 北京:科学出版社, 1989.[WEN Qizhong. Geochemistry of Chinese loess[M]. Beijing:Science Press, 1989.] [23] 刘岩, 张祖麟, 洪华生. 珠江口伶仃洋海区表层沉积物稀土元素分布特征及配分模式[J]. 海洋地质与第四纪地质, 1999, 19(1):103-107. [LIU Yan, ZHANG Zhulin, HONG Huasheng. Distribution characters and model of rare earth element(REE) in surface sediments from Lingdingyang area of Pearl river estuary[J]. Marine Geology and Quaternary Geology, 1999, 19(1):103-107.]
[24] Gaillardet J, Dupr B, Allegrea J. Geochemistry of large river suspended sediments:Silicate weathering or recycling tracer?[J] Geochimica et Cosmochimica Acta, 1999, 63(23-24):4037-4051.
[25] 沈华悌. 深海沉积物中的稀土元素[J]. 地球化学, 1990, 4:340-348. SHEN Huati. Rare Earth elements in deep-sea sediments[J]. Geochimica, 1990 , 4:340-348.
[26] Sun S S, McDonough W F. Chemical and isotopic systematics of oceanic basalts:implications for mantle composition and processes[J]. Geological Society, London, Special Publications, 1989, 42(1):313-345.
[27] Boulay S, Colin C, Trentesaux A, et al. Mineralogy and sedimentology of Pleistocene sediment in the South China Sea (ODP Site 1144)[C]//Proceedings of the Ocean Drilling Program, Scientific Results. 2003, 184(211):1-21.
[28] Lüdmann T, Wong H K, Berglar K. Upward flow of North Pacific Deep Water in the northern South China Sea as deduced from the occurrence of drift sediments[J]. Geophysical Research Letters, 2005, 32(5), doi: 10.1029/2004GL021967
[29] Tamburini F, Adatte T, F?llmi K, et al. Investigating the history of East Asian monsoon and climate during the last glacial-interglacial period (0-140000 years):mineralogy and geochemistry of ODP Sites 1143 and 1144, South China Sea[J]. Marine Geology, 2003, 201(1):147-168.
[30] 刘宝林, 王亚平, 王吉中, 等. 南海北部陆坡海洋沉积物稀土元素及物源和成岩环境[J]. 海洋地质与第四纪地质, 2004, 24(4):17-23. [LIU Baolin, WANG Yaping, WANG Jizhong, et al. Geochemical characters of REE in the seafloor sediment in northern continental slope of the south China Sea and analysis of source of material and diagenesis environment[J]. Marine Geology and Quaternary Geology, 2004, 24(4):17-23.]
[31] 刘志飞, Trentesaux A, Clemens S C, et al. 南海北坡ODP1146站第四纪粘土矿物记录:洋流搬运与东亚季风演化[J]. 中国科学D辑, 2003, 33(3):271-280. [LIU Zhifei, Trenteasaux A, Clemens S C, et al. Quaternary clay mineral record of ODP1146 station in the northern South China Sea:ocean currents transport and East Asian monsoon evolution[J]. Science China (D), 2003, 33(3):271-280.]
[32] 刘志飞, 黄维, 陈忠, 等. 珠江流域盆地表层沉积物的黏土矿物及其对南海沉积物的贡献[J]. 科学通报, 2007, 52(4):448-456. [LIU Zhifei, HUANG Wei, CHEN Zhong, et al. Clay minerals of surface sediments in Pearl River drainage basin and their contribution to the South China Sea sediments[J]. Chinese Science Bull, 2007, 52(4):448-456.]
[33] 栾锡武, 彭学超, 邱燕. 南海北部陆坡高速堆积体的构造成因[J]. 现代地质, 2009, 23(2):183-199. [LUAN Xiwu, PENG Xuechao, QIU Yan. Tectonic control on the formation of high-deposition-rate sediment drift in the northern slope of the South China Sea[J]. Geoscience, 2009, 23(2):183-199.]
[34] 邵磊, 李献华, 韦刚健, 等. 南海陆坡高速堆积体的物质来源[J]. 中国科学:D辑, 2001, 31(10):828-833. [SHAO Lei, LI Xianhua, WEI Gangjian, et al. The material sources of high speed stacking body in the South China Sea[J]. Science China (D), 2001, 31(10):828-833.]
[35] 邵磊, 李学杰, 耿建华, 等. 南海北部深水底流沉积作用[J]. 中国科学:D辑, 2007, 37(6):771-777. [SHAO Lei, LI Xuejie, GENG Jianhua, et al. Deep water underflow deposition in the northern South China Sea[J]. Science China (D), 2007, 37(6):771-777.]
[36] 邵磊, 乔培军, 庞雄, 等. 南海北部近代沉积物钕同位素分布及意义[J]. 科学通报, 2009, 54(2):311-317. [SHAO Lei, QIAO Peijun, PANG Xiong, et al. Nd isotopic variations and its implications in the recent sediments from the northern South China Sea[J]. Chinese Science Bulletin, 2009, 54(2):311-317.]
[37] 李双林, 李绍全. 黄海YA01孔沉积物稀土元素组成与源区示踪[J]. 海洋地质与第四纪地质, 2001, 21(3):51-56. [LI Shuanglin, LI Shaoquan. REE composition and source tracing of sediments from core YA01 Yellow Sea[J]. Marine Geology and Quaternary Geology, 2001, 21(3):51-56.]
[38] 朱赖民, 高志友, 尹观, 等. 南海表层沉积物的稀土和微量元素的丰度及其空间变化[J]. 岩石学报, 2007, 23(11):2963-2980. [ZHU Laimin, GAO Zhiyou, YIN Guan, et al. Content and spatial change of rare earth element and trace element of surficial sediment in the South China Sea[J]. Acta Petrologica Sinica, 2007, 23(11):2963-2980.]
[39] 谢锦龙, 余和中, 唐良民, 等. 南海新生代沉积基底性质和盆地类型[J]. 海相油气地质, 2010, 15(4):35-47. [XIE Jinlong, YU Hezhong, TANG Liangmin,et al. The Basement Features and Basin Types of Cenozoic Sediments in South China Sea[J]. Marine Origin Petroleum Geology, 2010, 15(4):35-47.]
[40] 杨文光, 谢昕, 郑洪波, 等. 南海北部陆坡高速堆积体沉积物稀土元素特征及其物源意义[J]. 矿物岩石, 2012, 32(1):74-81. [YANG Wenguang, XIE Xi, ZHENG Hongbo, er al. Rare earth elements characteristics of sediments from high-deposition-rate sediment in the north slope of South China Sea and its provenance significance[J]. Journal of Mineralogy and Petrology, 2012, 32(1):74-81.]
[41] 刘昭蜀, 范时清, 赵焕庭. 南海地质[M]. 北京:科学出版社, 2002.[LIU Zhaoshu, FAN Shiqing, ZHAO Huanting. Geology of South China Sea[M]. Beijing:Science Press, 2002.] [42] 张富元, 张霄宇, 杨群慧, 等. 南海东部海域的沉积作用和物质来源研究[J]. 海洋学报, 2005, 27(2):79-90. [ZHANG Fuyuan, ZHANG Xiaoyu, YANG Qunhui, et al. Research on sedimentations and material sources in the eastern South China Sea[J]. Acta Oceanologica Sinica, 2005, 27(2):79-90.]
[43] Miao Q, Thunell R C, Anderson D M. Glacial-Holocene carbonate dissolution and sea surface temperatures in the south China and Sulu seas[J]. Paleoceanography, 1994, 9(2):269-290.
[44] 汪品先. 西太平洋边缘海的冰期碳酸盐旋回[J]. 海洋地质与第四纪地质, 1998,18(1):1-9. [WANG Pinxian. Glacial carbonate cycles in western pacific marginal seas[J]. Marine Geology and Quaternary Geology, 1998, 18(1):1-9.]
[45] Hays J D, Saito T, Opdyke N D, Burckle L H. Pliocene-Pleistocene sediments of the equatorial Pacific:Their paleomagnetic, biostratigraphic, and climatic record[J]. Geological Society of America Bulletin, 1969, 80(8):1481-1514.
[46] Vincent E. Neogene carbonate stratigraphy of Hess Rise (central North Pacific) and paleoceanographic implications[J]. Initial Rep. Deep Sea Drill. Proj, 1981, 62:571-606.
[47] Pisias N G, Rea D K. Late Pleistocene paleoclimatology of the central equatorial Pacific:Sea surface response to the southeast trade winds[J]. Paleoceanography, 1988, 3(1):21-37.
[48] Chuey J M, Rea D K, Pisias N G. Late Pleistocene paleoclimatology of the central equatorial Pacific:A quantitative record of eolian and carbonate deposition[J]. Quaternary Research, 1987, 28(3):323-339.
[49] Farrell J W, Prell W L. Pacific CaCO3 preservation and δ18O since 4 Ma:paleoceanic and paleoclimatic implications[J]. Paleoceanography, 1991, 6(4):485-498.
[50] 钱建兴. 晚第四纪以来南海古海洋学研究[M]. 北京:科学出版社, 1999.[Qian Jianxing. Paleoceanography research of the south China sea Since the late quaternary[M]. Beijing:Science Press, 1999.] [51] Yang X Q, Friedrich H, Wu N Y, et al. Geomagnetic paleointensity dating of South China Sea sediments for the last 130 kyr[J]. Earth and Planetary Science Letters, 2009, 284(1):258-266.
[52] 庄畅, 陈芳, 张金鹏, 等. 南海西沙海槽近120ka以来的浮游有孔虫特征及其古气候意义[J]. 海洋地质与第四纪地质, 2013, 33(5):89-96. [ZHUANG Chang, Chen Fang, Zhang Jinpeng, et al. Planktonic foraminifera in the Xisha Trough of the South China Sea during the last 120ka and their paleoclimatic implications[J]. Marine Geology and Quaternary Geology, 2013, 33(5):89-96.]
[53] Taylor S R, McLennan S M. The continental crust:its composition and evolution[M]. Oxford:Blackwell Scientific, 1985.
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