南海东北部陆坡结核成因及对冷泉活动的指示

陆怡, 初凤友, 董彦辉, 朱志敏, 朱继浩, 鲁江姑

海洋学研究 ›› 2020, Vol. 38 ›› Issue (2) : 16-25.

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海洋学研究 ›› 2020, Vol. 38 ›› Issue (2) : 16-25. DOI: 10.3969/j.issn.1001-909X.2020.02.003
研究论文

南海东北部陆坡结核成因及对冷泉活动的指示

  • 陆怡1,2, 初凤友*1,2, 董彦辉1,2, 朱志敏1,2, 朱继浩1,2, 鲁江姑1,2
作者信息 +

Formation of nodules on continental slopes in thenortheast of the South China Sea and itsimplications for cold seep

  • LU Yi1,2, CHU Fengyou*1,2, DONG Yanhui1,2, ZHU Zhimin1,2, ZHU Jihao1,2, LU Jianggu1,2
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文章历史 +

摘要

本文对2018年利用“海龙Ⅲ”ROV在南海东北部陆坡采集到的多金属结核样品进行了矿物学和地球化学分析。结果表明研究区结核以棒状为主,具有2层结构。结核外层的矿物学和元素组成特征与水成型多金属结核较为相似。结核内层多发育孔洞,以针铁矿为主,有黄铁矿残余,Fe、As元素含量高,Mn、REE等元素含量低。NH-2结核样品内部的碳酸盐组分的全岩δ13C为-30.91‰。所研究结核样品的早期形成过程与冷泉活动密切相关,结核生长后期冷泉活动停止或是减弱,在等深流作用下结核黄铁矿被氧化成针铁矿,之后锰铁氧化物继续在结核外部生长。

Abstract

The polymetallic nodule samples were analyzed for their mineralogical and geochemical features, which were acquired on the northeastern slope of the South China Sea using the ROV named as Sea Dragon III. The results showed that the nodules in the study area were predominantly by rod-shaped with a two-layer structure. The outer layer of the polymetallic nodules was mineralogically and geochemically similar to hydrogenic nodules. While the inner layer was porously and composed of goethite with residual minor pyrite. Geochemically, the inner layer was characterized by high concentration of Fe and As but extremely low concentration of Mn, REE and other elements. The inner layer carbon isotopes ( δ13C ) of sample NH-2 was -30.91‰. The study presented that the early forming process of the nodules was related to the activities of cold seep, but the pyrite was oxidized following the extinction of cold seep. Under the influences of contour current in the area, the ferromanganese oxides continued to grow in the outer layer of the nodules.

关键词

结核 / 冷泉 / 南海 / 东沙 / 大陆坡

Key words

cold seep / South China Sea / Dongsha / continental slopes

引用本文

导出引用
陆怡, 初凤友, 董彦辉, 朱志敏, 朱继浩, 鲁江姑. 南海东北部陆坡结核成因及对冷泉活动的指示[J]. 海洋学研究. 2020, 38(2): 16-25 https://doi.org/10.3969/j.issn.1001-909X.2020.02.003
LU Yi, CHU Fengyou, DONG Yanhui, ZHU Zhimin, ZHU Jihao, LU Jianggu. Formation of nodules on continental slopes in thenortheast of the South China Sea and itsimplications for cold seep[J]. Journal of Marine Sciences. 2020, 38(2): 16-25 https://doi.org/10.3969/j.issn.1001-909X.2020.02.003
中图分类号: P744   

参考文献

[1] 张振国,杜远生,吴长航,等.南海西北陆缘大型多金属结核的生长过程及其对晚新生代古海洋环境变化的响应[J].中国科学:地球科学,2013,43(7):1168-1178.
ZHANG Zhenguo, DU Yuansheng, WU Changhang, et al. Growth of a polymetallic nodule from northwestern continental margin of the South China Sea and its response to changes in paleoceanographical environment of the late Cenozoic[J].Science China: Earth Sciences, 2013, 43(7):1168-1178.
[2] 林振宏,季福武,张富元,等.南海东北陆坡区铁锰结核的特征和成因[J].海洋地质与第四纪地质,2003,23(1):7-12.
LIN Zhenhong, JI Fuwu, ZHANG Fuyuan, et al. Characteristics and origin of ferromanganese nodules from the northeastern continental slope of the South China Sea[J]. Marine Geology and Quaternary Geology, 2003, 23(1): 7-12.
[3] 苏广庆,王天行.南海的铁锰结核[J].热带海洋学报,1990,9(4):29-36.
SU Guangqing, WANG Tianxing. Fe-Mn Nodules in the South China Sea[J]. Journal of Tropical Oceanography, 1990, 9(4): 29-36.
[4] 梁美桃,陈绍谋,吴必豪,等.南海海盆和陆坡锰结核的特征及地球化学的初步研究[J].热带海洋学报,1988,7(3):10-18.
LIANG Meitao, CHEN Shaomou, WU Bihao, et al. A preliminary study on characteristics and geochemistry of manganese nodules from the basin and continental slope of the South China Sea [J]. Tropic Oceanology, 1988, 7(3): 10-18.
[5] 殷征欣,王海峰,韩金生,等.南海边缘海多金属结核与大洋多金属结核对比[J].吉林大学学报(地球科学版),2019,49(1):261-277.
YIN Zhengxin, WANG Haifeng, HAN Jinsheng, et al. Comparison Between the Marginal-Sea Polymetallic Nodules in South China Sea and Ocean Polymetallic Nodules[J]. Journal of Jilin University (Earth Science Edition), 2019, 49(1): 261-277.
[6] 仲义,陈忠,莫爱彬,等.南海北部铁锰结核成因及元素的赋存状态[J].热带海洋学报,2017,36(2):48-59.
ZHONG Yi, CHEN Zhong, MO Aibin, et al. Genetic types and element occurrence phases of ferromanganese nodules in the northern South China Sea[J]. Journal of Tropical Oceanography, 2017, 36(2): 48-59.
[7] GUAN Yao, SUN Xiaoming, REN Yingzhi, et al. Mineralogy, geochemistry and genesis of the polymetallic crusts and nodules from the South China Sea [J]. Ore Geology Reviews, 2017, 89: 206-227.
[8] 姚伯初,曾维军,HAYES D E,等.中美合作调研南海地质专报[M].武汉:中国地质大学出版社,1994.
YAO Bochu, ZENG Weijun, HAYES D E, et al. The geological memoir of South China Sea surveyed jointly by China and USA[M]. Wuhan: China University of Geosciences Press, 1994.
[9] ZHONG Yi, CHEN Zhong, GONZÁLEZ F J, et al. Composition and genesis of ferromanganese deposits from the northern South China Sea [J]. Journal of Asian Earth Sciences, 2017, 138:110-128.
[10] 吴长航.南海北部陆缘大型多金属结核的生长及元素地球化学特征研究[D] .北京:中国地质大学(北京),2009.
WU Changhang. Research on the growth and elemental geochemical characteristics of large-scale polymetallic nodules from the North Continental Margin of the South China Sea[D] . Beijing: China University of Geosciences (Beijing), 2009.
[11] 刘明光.中国自然地理图集[M].北京:中国地图出版社,1998.
LIU Mingguang. Maps of physical geography of China[M]. Beijing: China Maps Press, 1998.
[12] LI Chunfeng, XU Xing, LIN Jian, et al. Ages and magnetic structures of the South China Sea constrained by deep tow magnetic surveys and IODP Expedition 349[J]. Geochemistry, Geophysics, Geosystems, 2014, 15(12): 4958-4983.
[13] 李华.南海北部珠江口盆地重力流与等深流交互作用沉积特征、过程及沉积模式[J].地质学报,2014,88(6):1120-1129.
LI Hua. Interactions between downslope and along-slope processes on the northern slope of South China Sea: Products, processes, and depositional model[J]. Acta Geologica Sinica, 2014, 88(6): 1120-1129.
[14] 陈慧,解习农,毛凯楠.南海北缘一统暗沙附近深水等深流沉积体系特征[J].地球科学——中国地质大学学报,2015,40(4):733-743.
CHEN Hui, XIE Xinong, MAO Kainan. Deep-water contourite depositional system in vicinity of Yi'tong Shoal on northern margin of the South China Sea[J]. Earth Science-Journal of China University of Geosciences, 2015, 40(4): 733-743.
[15] 江宁,何敏,刘军,等.东沙隆起南缘第四系等深流沉积特征及成因机制[J].沉积学报,2018,36(1):120-131.
JIANG Ning, HE Min, LIU Jun, et al. Depositional characteristics and formation mechanisms of contour current in south Dongsha Uplift during the Quaternary[J]. Acta Sedimentologica Sinica, 2018, 36(1):120-131.
[16] LI Hua, WANG Yingmin, ZHU Weilin, et al. Seismic characteristics and processes of the Plio-Quaternary unidirectionally migrating channels and contourites in the northern slope of the South China Sea[J]. Marine and Petroleum Geology, 2013, 43:370-380.
[17] ZHENG Hongbo, YAN Pin. Deep-water bottom current research in the northern South China Sea [J]. Marine Georesources & Geotechnology, 2012, 30(2): 122-129.
[18] 陈忠,杨华平,黄奇瑜,等.海底甲烷冷泉特征与冷泉生态系统的群落结构[J].热带海洋学报,2007,26(6):73-82.
CHEN Zhong, YANG Huaping, HUANG Qiyu, et al. Characteristics of cold seeps and structures of chemoautosynthesis-based communities in seep sediments[J]. Journal of Tropical Oceanography, 2007, 26(6): 73-82.
[19] ZHANG Guanxue, LIANG Jinqiang, LU Jiang'an, et al. Geological features, controlling factors and potential prospects of the gas hydrate occurrence in the east part of the Pearl River Mouth Basin, South China Sea [J]. Marine and Petroleum Geology, 2015, 67:356-367.
[20] HU Zhaochu, ZHANG Wen, LIU Yongsheng, et al. “Wave” signal-smoothing and mercury-removing device for laser ablation quadrupole and multiple collector ICPMS analysis: Application to lead isotope analysis [J]. Analytical Chemistry, 87(2): 1152-1157.
[21] LIU Yongsheng, HU Zhaochu, GAO Shan, et al. In situ analysis of major and trace elements of anhydrous minerals by LA-ICP-MS without applying an internal standard[J]. Chemical Geology, 2008, 257(1/2): 34-43.
[22] GROMET L P, HASKIN L A, KOROTEV R L, et al. The “North American shale composite”: Its compilation, major and trace element characteristics [J]. Geochimica et Cosmochimica Acta, 1984, 48(12): 2469-2482.
[23] HASKIN L A, WILDEMAN T R, FREY F A, et al. Rare earths in sediments[J].Journal of Geophysical Research, 1966, 71(24): 6091-6105.
[24] 张富元,杨群慧,殷汝广,等.东太平洋CC区多金属结核物质来源和分布规律[J].地质学报,2001,75(4):537-547.
ZHANG Fuyuan, YANG Huiqun, YIN Ruguang, et al. Material sources and distribution characteristics of polymetallic nodules in the Eastern Pacific[J]. Acta Geologica Sinica, 2001, 75(4): 537-547.
[25] 张振国,方念乔,杜远生,等.南海西北陆缘多金属结核地球化学特征及成因[J].地球科学——中国地质大学学报,2009,34(6):955-962.
ZHANG Zhenguo, FANG Nianqiao, DU Yuansheng, et al. Geochemical characteristics and their causative mechanism of polymetallic nodules from the northwest continental margin of the South China Sea[J]. Earth Science-Journal of China University of Geosciences, 2009,34(6): 955-962.
[26] GONZÁLEZ F, SOMOZA L, LUNAR R, et al. Internal features, mineralogy and geochemistry of ferromanganese nodules from the Gulf of Cadiz: The role of the Mediterranean outflow water undercurrent [J]. Journal of Marine Systems, 2010, 80(3/4): 203-218.
[27] 杨克红,初凤友,赵建如,等.南海北部冷泉碳酸盐岩矿物微形貌及其意义探讨[J].矿物学报,2009,29(3):345-352.
YANG Kehong, CHU Fengyou, ZHAO Jianru, et al. Minerals' mcro-shape and its significance of seep carbonates in the north of the South China Sea[J]. Acta Mineralogica Sinica, 2009, 29(3): 345-352.
[28] 苏新,陈芳,陆红锋,等.南海北部深海甲烷冷泉自生碳酸盐岩显微结构特征与流体活动关系初探[J].现代地质,2008,22(3):376-381.
SU Xin, CHEN Fang, LU Hongfeng, et al. Micro-textures of methane seep carbonates from the northern South China Sea in correlation with fluid flow[J]. Geoscience, 2008, 22(3): 376-381.
[29] 陈多福,黄永样,冯东,等.南海北部冷泉碳酸盐岩和石化微生物细菌及地质意义[J].矿物岩石地球化学通报,2005,24(3):185-189.
CHEN Duofu, HUANG Yongyang, FENG Dong, et al. Seep carbonate and preserved baeteria fossils in the northern of the South China Sea and their geological implications [J]. Bulletin of Mineralogy, Petrology and Geochemistry, 2005,24(3):185-189.
[30] 陆红锋,陈芳,刘坚,等.南海北部神狐海区的自生碳酸盐岩烟囱——海底富烃流体活动的记录[J].地质评论,2006,52(3):352-357.
LU Hongfeng, CHEN Fang, LIU Jian, et al. Characteristics of authigenic carbonate chimneys in Shenhu Area, Northern South China Sea: Recorders of hydrocarbon-enriched fluid activity[J]. Geological Review, 2006, 52(3): 352-357.
[31] 邬黛黛,吴能友,叶瑛,等.南海北部陆坡九龙甲烷礁冷泉碳酸盐岩沉积岩石学特征[J].热带海洋学报,2009,28(3):74-81.
WU Daidai, WU Nengyou, YE Ying, et al. Petrographic characteristics of authigenic carbonates from Jiulong methane reef of northern South China Sea[J]. Journal of Tropical Oceanography, 2009, 28(3): 74-81.
[32] HAN Xiqiu, SUESS E, HUANG Yongyang, et al. Jiulong methane reef: microbial mediation of seep carbonates in the South China Sea[J]. Marine Geology, 2008, 249(3/4): 243-256.
[33] 陈忠,黄奇瑜,颜文,等.南海西沙海槽的碳酸盐结壳及其对甲烷冷泉活动的指示意义[J].热带海洋学报,2007,26(2):26-33.
CHEN Zhong, HUANG Qiyu, YAN Wen, et al. Authigenic carbonates as evidence for seeping fluids in Xisha Trough of South China Sea[J]. Journal of Tropical Oceanography, 2007, 26(2): 26-33.
[34] 陆红锋,刘坚,陈芳,等.南海台西南区碳酸盐岩矿物学和稳定同位素组成特征——天然气水合物存在的主要证据之一[J].地学前缘,2005,12(3):268-276.
LU Hongfeng, LIU Jian, CHEN Fang, et al. Mineralogy and stable isotopic composition of authigenio carbonates in bottom sediments in the offshore area of southwest Taiwan, South China Sea: Evidence for gas hydrate occurrence[J]. Earth Science Frontiers, 2005, 12(3): 268-276.
[35] GE Lu, JIANG Shaoyong, SWENNEN R, et al. Chemical environment of cold seep carbonate formation on the northern continental slope of South China Sea: Evidence from trace and rare earth element geochemistry [J]. Marine Geology, 2010, 277(1/4): 21-30.
[36] BONATTI E, KRAEMER T, RYDELL H. Classification and genesis of submarine iron-manganese deposits[M]//HORN D R. Ferromanganese deposits on the ocean floor. New York: Columbia University, 1972:149-166.
[37] BAU M, SCHMIDT K, KOSCHINSKY A, et al. Discriminating between different genetic types of marine ferro-manganese crusts and nodules based on rare earth elements and yttrium[J]. Chemical Geology, 2014, 381:1-9.
[38] 梁宏峰,姚德,梁德华,等.南海尖峰海山多金属结壳地球化学[J].海洋地质与第四纪地质,1991,11(4):49-58.
LIANG Hongfeng, YAO De, LIANG Dehua, et al. Geochemistry of polymetallic crust from Jianfeng seamount, South China Sea[J]. Marine Geology & Quaternary Geology, 1991, 11(4): 49-58.
[39] 何良彪.南海铁锰结核(壳)的地球化学特征[J].黄渤海海洋,1991,9(4):18-25.
HE Liangbiao. Geochemistry of Fe-Mn nodules from the South China Sea [J]. Journal of Oceanography of Huanghai & Bohai Seas,1991,9(4):18-25.
[40] 王贤觉,陈毓蔚,吴明清.铁锰结核的稀土和微量元素地球化学及其成因[J].海洋与湖沼,1984,15(6):501-514.
WANG Xianjue, CHEN Yuwei, WU Mingqing. Geochemistry of RE and trace elements in ferromanganese nodules and their genesis[J]. Oceanologia et Limnologia Sinica, 1984, 15(6):501-514.
[41] 梁宏峰,刘季花.东北太平洋海盆铁锰结核分布规律[J].海洋地质与第四纪地质,1997,17(3):45-52.
LIANG Hongfeng, LIU Jihua. The distribution of ferromanganese nodules in the northeast Pacific basin[J]. Marine Geology & Quaternary Geology, 1997, 17(3): 45-52.
[42] LIM Y C, LIN S, YANG T F, et al. Variations of methane induced pyrite formation in the accretionary wedge sediments offshore southwestern Taiwan[J]. Marine and Petroleum Geology, 2011, 28(10): 1829-1837.
[43] 陈惠昌,赖勇,卢海龙,等.南海神狐天然气水合物系统沉积物中自生黄铁矿的特征研究[J].海洋学报,2018,40(7):118-135.
CHEN Huichang, LAI Yong, LU Hailong, et al. Study on authigenic pyrite in sediments of gas hydrate geo-system in the Shenhu area, South China Sea[J]. Journal of Oceanography, 2018, 40(7): 118-135.
[44] LU Yang, SUN Xiaoming, LIN Zhiyong, et al. Cold seep status archived in authigenic carbonates: Mineralogical and isotopic evidence from Northern South China Sea [J]. Deep-sea Research Part Ⅱ:Topical Studies in Oceanography, 2015, 122:95-105.
[45] GONZÁLEZ F J, SOMOZA L, LEÓN R, et al. Ferromanganese nodules and micro-hardgrounds associated with the Cadiz Contourite Channel (NE Atlantic): Palaeoenvironmental records of fluid venting and bottom currents [J]. Chemical Geology, 2012, 310:56-78.

基金

大洋“十三五”资源环境课题资助(N1-01-06,N2-1-03,N1-01-01);自然资源部第二海洋研究所基本科研业务费项目资助(JT1304)

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