北部湾SO-50柱状沉积物地球化学特征及其物源分析

张爱梅; 陈敏; 甘华阳; 陈秋明; 兰斌彬; 方琦

doi:10.3969/j.issn.0253-4193.2018.05.009

北部湾SO-50柱状沉积物地球化学特征及其物源分析

doi: 10.3969/j.issn.0253-4193.2018.05.009

1.
国家海洋局第三海洋研究所, 福建厦门 361005
2.
广州海洋地质调查局, 广东广州 510760

基金项目: 国家海洋局第三海洋研究所基本科研业务项目（海三科2013032，2016015）；国土资源部海底矿产资源重点实验室基金项目（KLMMR-2013-A-14）；国家自然科学基金（41506050）。

计量
- 文章访问数: 584
- HTML全文浏览量: 11
- PDF下载量: 399
- 被引次数: 0
出版历程
- 收稿日期: 2017-07-24
- 修回日期: 2017-10-09

Geochemical characteristics and sediment provenance of Core SO-50 sediments in the Beibu Gulf

1.
The Third Institute of Oceanography, State Oceanic Administration, Xiamen 361005, China
2.
Guangzhou Marine Geological Survey, Guangzhou 510760, China

摘要

摘要: 通过对北部湾SO-50柱状沉积物进行粒度、Sr-Nd同位素、主微量元素及AMS¹⁴C分析，结果表明该柱状沉积物可以划分为两段，即上段（0~540 cm，0~3.0 ka BP）和下段（540~571 cm，3.0~3.3 ka BP），它们反映了不同的物质源区贡献。下段较上段砂含量相对较高，主量元素（除SiO₂外）及稀土元素含量相对减少，⁸⁷Sr/⁸⁶Sr与ε_Nd除异常点外，总体变化幅度不大。研究结果显示SO-50柱状沉积物的物质来源比较稳定，具有强烈的陆源特征，下段沉积物的源区主要是琼州海峡东侧原有沉积物的再搬运和台湾岛河流携带沉积物的混合，上段沉积物除了琼州海峡东侧和台湾岛的贡献外，周边陆区海岸侵蚀物的贡献相对加强。根据SO-50柱状沉积物的研究结果表明，北部湾东部泥质区的物质来源除了琼州海峡东侧沉积物和沿岸侵蚀物的贡献外，台湾岛河流携带的沉积物对其影响也应引起重视。
- 北部湾 /
- 柱状沉积物 /
- 稀土元素 /
- Sr-Nd同位素 /
- 物质来源
Abstract: The provenance of Core SO-50 sediments were discussed in this paper based on grain-size, Sr-Nd isotopes, major and trace elements and AMS¹⁴C dating. Results showed that Core SO-50 could be divided into two sedimentary units:(1) the upper unit(0-540 cm,0-3.0 ka BP), (2) the lower unit(540-571 cm,3.0-3.3 ka BP). Compared with the upper unit, the sand content increased and the content of major elements (excepting SiO₂) and REE decreased. In addition to the abnormal value, the trends of ⁸⁷Sr/⁸⁶Sr and ε_Nd were relatively stable. The results suggested that Core SO-50 sediments were mainly derived from the eastern Qiongzhou Strait, Taiwan islands and the surrounding coastal. In the lower unit were primarily a mixture of the eastern Qiongzhou Strait and Taiwan islands, and in the upper unit, in addition to the contribution of the eastern Qiongzhou Strait and Taiwan islands, the supply of the surrounding coastal was increased. Therefore, the contribution of Taiwan islands to the Beibu Gulf area should be paid more attention in the future studies.
- Beibu Gulf /
- core sediments /
- REE /
- Sr-Nd isotope /
- sediment provenance

HTML全文

参考文献(33)

Luu T N M, Garnier J, Billen G, et al. Hydrological regime and water budget of the Red River Delta (Northern Vietnam)[J]. Journal of Asian Earth Sciences, 2010, 37(3):219-228.

Le T P Q, Garnier J, Gilles B, et al. The changing flow regime and sediment load of the Red River, Viet Nam[J]. Journal of Hydrology, 2007, 334(1):199-214.

Xia H Y, Li S H, Shi M C. Three-D numerical simulation of wind-driven current and density current in the Beibu Gulf[J]. Acta Oceanologica Sinica, 2001, 20(4):455-72.

闫慧梅, 田旭, 徐方建,等. 中全新世以来南海琼东南近岸泥质区物质来源[J]. 海洋学报, 2016, 38(7):97-106. Yan Huimei, Tian Xu, Xu Fangjian, et al. Sediment provenance of offshore mud area of the eastern Hainan Island in South China Sea since middle-Holocene[J]. Haiyang Xuebao, 2016, 38(7):97-106.

Hu B, Li J, Cui R, et al. Clay mineralogy of the riverine sediments of Hainan Island, South China Sea:Implications for weathering and provenance[J]. Journal of Asian Earth Sciences, 2014, 96:84-92.

高为利, 张富元, 章伟艳,等. 海南岛周边海域表层沉积物粒度分布特征[J]. 海洋通报, 2009, 28(2):71-80. Gao Weili, Zhang Fuyuan, Zhang Weiyan, et al. Characteristics of grain size distributions of surface sediments in the Hainan Island offshore area[J]. Marine Science Bulletin, 2009, 28(2):71-80.

Tong GuoBang, Chen Liang, Long Jianping,et al. Surface pollen distribution patterns in Beibu Gulf and corresponding sediment dynamics environment[J]. Chinese Science Bulletin, 2012, 57(8):902-911.

陈丽蓉, 徐文强, 申顺喜,等. 南海北部大陆架和北部湾沉积物中的矿物组合及其分布特征[J]. 海洋科学, 1986, 10(3):6-10. Chen Lirong, Xu Wenqiang, Shen Shunxi, et al. Mineral assemblages and their distribution pattern in the sediments from the north continental shelf of the South China Sea and the Beibu Gulf[J]. Marine Sciences, 1986, 10(3):6-10.

徐志伟, 汪亚平, 李炎,等. 多元统计及物源分析支持的北部湾东部海域沉积物输运趋势[J]. 海洋学报, 2010, 32(3):67-78. Xu Zhiwei, Wang Yaping, Li Yan, et al. Sediment transport patterns in the eastern Beibu Gulf based on grain-size multivariate statistics and provenance analysis[J]. Haiyang Xuebao, 2010, 32(3):67-78.

许冬, 李家彪, 初凤友,等. 北部湾东部沉积物结构和碳酸盐含量变化对末次海侵和环流作用的响应[J]. 中国地质大学学报:地球科学, 2013(S1):70-82. Xu Dong, Li Jiabiao, Chu Fengyou, et al. The response of sedimentary records in eastern Beibu Gulf to the last postglacial transgression and circulation[J]. Journal of China University of Geosciences:Earth Science, 2013(S1):70-82.

崔振昂, 侯月明, 夏真,等. 南海北部湾全新世以来沉积物地球化学特征及物源分析[J]. 世界地质, 2015, 34(3):605-614. Cui Zhen'ang, Hou Yueming, Xia Zhen, et al. Geochemical characteristics and provenance analysis of Holocene sediments in Beibu Gulf, South China Sea[J]. Global Geology, 2015, 34(3):605-614.

窦衍光, 李军, 李炎. 北部湾东部海域表层沉积物稀土元素组成及物源指示意义[J]. 地球化学, 2012(2):147-157. Dou Yanguang, Li Jun, Li Yan. Rare earth element compositions and provenance implication of surface sediments in the eastern Beibu Gulf[J]. Geochimica, 2012(2):147-157.

Liu Z, Colin C, Li X, et al. Clay mineral distribution in surface sediments of the northeastern South China Sea and surrounding fluvial drainage basins:Source and transport[J]. Marine Geology, 2010, 277(1):48-60.

韦刚健, 桂训唐, 李献华,等. 南沙NS90-103钻孔沉积物Sr-Nd同位素组成及其气候环境信息探讨[J]. 中国科学:D辑, 2000, 30(3):249-255. Wei Gangjian, Gui Xuntang, Li Xianhua,et al. Strontium and neodymium isotopic compositions of detrital sediment of NS90-103 from South China Sea:Variations and their paleoclimate implication[J]. Science in China:Series D, 2000, 30(3):249-255.

Reimer P J, Bard E, Bayliss A, et al. IntCal13 and Marine13 Radiocarbon Age Calibration Curves 0-50,000 Years cal BP[J]. Radiocarbon, 2009, 51(4 (intcal 13)):1111-1150.

蓝先洪, 张宪军, 赵广涛,等. 南黄海NT1孔沉积物稀土元素组成与物源判别[J]. 地球化学, 2009, 38(2):123-132. Lan Xianhong, Zhang Xianjun, Zhao Guangtao, et al. Distributions of rare earth elements in sediments from Core NT1 of the South Yellow Sea and their provenance discrimination[J]. Geochimica, 2009, 38(2):123-132.

甘华阳, 梁开, 郑志昌. 珠江口表层沉积物中微量元素地球化学[J]. 海洋地质与第四纪地质, 2010(4):136-144. Gan Huayang, Liang Kai, Zheng Zhichang. Trace elements geochemical characteristics of the surface sediments of Pear River Estuary[J]. Marine Geology & Quaternary Geology, 2010(4):136-144.

Gaillardet J, Dupré B, Allègre C J. Geochemistry of large river suspended sediments:silicate weathering or recycling tracer?[J]. Geochimica et Cosmochimica Acta, 1999, 63(23/24):4037-4051.

Li C S, Shi X F, Kao S J, et al. Rare earth elements in fine-grained sediments of major rivers from the high-standing island of Taiwan[J]. Journal of Asian Earth Sciences, 2013, 69(12):39-47.

Nesbitt&Amp 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.

杨守业, 李从先, 李徐生,等. 长江下游下蜀黄土化学风化的地球化学研究[J]. 地球化学, 2001, 30(4):402-406. Yang Shouye, Li Congxian, Li Xusheng, et al. Geochemical records of chemical weathering of the Xiashu Loess in the lower reaches of the Changjiang River[J]. Geochimica, 2001, 30(4):402-406.

徐方建, 陈世悦, 操应长,等. 近4400年来南海北部陆架沉积地球化学记录及其地质意义[J]. 沉积学报, 2010, 28(6):1198-1205. Xu Fangjian, Chen Shiyue, Gao Yingchang, et al. Geochemical records and geological significance of the continental shelf sediments in the northern South China Sea since 4400a[J]. Acta Sedimentologica Sinica, 2010, 28(6):1198-1205.

马英军, 刘丛强. 地壳风化系统中的Sr同位素地球化学[J]. 矿物学报, 1998(3):350-358. Ma Yingjun, Liu Congqiang. Geochemistry of strontium isotopes in the crust weathering system[J]. Acta Mineralogica Sinica, 1998(3):350-358.

Derry L A, France-Lanord C. Neogene Himalayan weathering history and river ⁸⁷Sr,⁸⁶Sr:impact on the marine Sr record[J]. Earth & Planetary Science Letters, 1996, 142(1/2):59-74.

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 & Quaternary Geology, 2008, 28(2):71-78.

陈亮, 李团结, 许冬. 北部湾东北部沉积物运移趋势分析[J].热带地理,2010, 30(6):587-590. Chen Liang, Li Tuanjie, Xu Dong. Sediment transport trend analysis on the Northeastern part of the Beibu Gulf[J].Tropical Geography,2010, 30(6):587-590.

Hannigan R E, Sholkovitz E R. The development of middle rare earth element enrichments in freshwaters:weathering of phosphate minerals[J]. Chemical Geology, 2001, 175(3):495-508.

傅飘儿, 庄畅, 刘坚,等. 南海西沙海槽XH-CL16柱状沉积物稀土元素特征及其物源[J]. 海洋地质与第四纪地质, 2015, 35(4):63-71. Fu Piaoer, Zhuang Chang, Liu Jian, et al. Rare earth elements geochemistry and provenance of the sediments from core XH-CL16 in the Xisha Trough, South China Sea[J]. Marine Geology & Quaternary Geology, 2015, 35(4):63-71.

Liu J, Clift P D, Yan W, et al. Modern transport and deposition of settling particles in the northern South China Sea:Sediment trap evidence adjacent to Xisha Trough[J]. Deep-Sea Research Part Ⅰ:Oceanographic Research Papers, 2014, 93:145-155.

Liu Z, Colin C, Huang W, et al. Climatic and tectonic controls on weathering in south China and Indochina Peninsula:Clay mineralogical and geochemical investigations from the Pearl, Red, and Mekong drainage basins[J]. Geochemistry, Geophysics, Geosystems, 2007, 8(5):2637-2655.

Lan C Y, Lee C S, Shen J S, et al. Nd-Sr isotopic composition and geochemistry of sediments from Taiwan and their implications[J]. 中華民國地質學會, 2002, 2:205-222.

Wei G, Liu Y, Ma J, et al. Nd, Sr isotopes and elemental geochemistry of surface sediments from the South China Sea:Implications for Provenance Tracing[J]. Marine Geology, 2012, S 319-322(2):21-34.

覃小锋, 王宗起, 曹洁,等. 桂南钦防构造带西南段印支早期花岗岩的成因:年代学和地球化学约束[J]. 吉林大学学报:地球科学版, 2013, 43(5):1471-1488. Qin Xiaofeng, Wang Zongqi, Cao Jie, et al. Petrogenesis of early Indosinian Granites from the southwestern segment of Qinfang Tectonic Belt, Southern Guangxi:Constraints from Zircon U-Pb chronology and geochemistry[J]. Journal of Jilin University:Earth Science Edition, 2013, 43(5):1471-1488.

施引文献

资源附件(0)

访问统计