Qingdao Institute of marine geology, China Geological SurveyHost
Advanced Search
Previous Article Next Article
2010 Vol. 30, No. 5
Article Contents
Article navigation > Marine Geology & Quaternary Geology > 2010 > 30(5): 41-51
Next Article Previous Article

WU Daidai, WU Nengyou, FU Shaoying, LIANG Jinqiang, GUAN Hongxiang. GEOCHEMICAL CHARACTERISTICS OF SHALLOW SEDIMENTS IN THE GAS HYDRATE DISTRIBUTION AREA OF DONGSHA, THE NORTHERN SOUTH CHINA SEA[J]. Marine Geology & Quaternary Geology, 2010, 30(5): 41-51. doi: 10.3724/SP.J.1140.2010.05041
Citation: WU Daidai, WU Nengyou, FU Shaoying, LIANG Jinqiang, GUAN Hongxiang. GEOCHEMICAL CHARACTERISTICS OF SHALLOW SEDIMENTS IN THE GAS HYDRATE DISTRIBUTION AREA OF DONGSHA, THE NORTHERN SOUTH CHINA SEA[J]. Marine Geology & Quaternary Geology, 2010, 30(5): 41-51. doi: 10.3724/SP.J.1140.2010.05041
shu

GEOCHEMICAL CHARACTERISTICS OF SHALLOW SEDIMENTS IN THE GAS HYDRATE DISTRIBUTION AREA OF DONGSHA, THE NORTHERN SOUTH CHINA SEA

  • 1. Key Laboratory of Marginal Sea Geology, Guangzhou Institute of Geochemistry, CAS, Gaungzhou 510640, China;

  • 2. Key Laboratory of Renewable Energy and Gas Hydrate, Guangzhou Institute of Energy Conversion, CAS, Guangzhou 510640, China;

  • 3. Guangzhou Center for Gas Hydrate Research, CAS, Guangzhou 510640, China;

  • 4. Guangzhou Marine Geological Survey, Guangzhou 510760, China

Received Date:  13 January 2010
Revised Date:  19 June 2010
    Abstract
  • Geochemical characteristics of the shallow sediments from sites HD319, HD196A and GC10 in Dongsha gas hydrate distribution area, the northern slope of South China Sea was discribed in the present paper. Complicated authigenic minerals were identified by XRD and SEM, such as miscellaneous carbonates, sulphates and pyrite, which consistently indicate the existence of gas hydrate and methane seep in the research area. Chemical analysis of pore water from the sediments showed that the concentrations of SO42-, Ca2+, Mg2+ and Sr2+ decrease clearly,whereas CH4 and H2S as well as the ratios of Mg2+/Ca2+ and Sr2+/Ca2+ increase sharply as the depth increases. These geochemical characteristics are similar to the chemical compositions abnormalities in pore water of the shallow sediments,where gas hydrate forms in the other parts of the world. There should be a great amount of gas sources in the research area,based on the occurrence of free hydrocarbon in the headspace gas and the distribution pattern of chemical compositions in the sediments, specially the concentrations of SO42-, H2S and CH4 which changed sharply with depth. Furthermore, the results strongly suggest that there should be gas hydrates underneath, and the sulphate-methane interface (SMI) should be shallow, about 8m below the seafloor in the research area.
    • FullText(HTML)
  • 加载中
    • References
  • [1] 吴能友,梁金强,王宏斌,等. 海洋天然气水合物成藏系统研究进展[J]. 现代地质,2008:22(3):356-362.

    Google Scholar

    [WU Nengyon, LIANG Jinqiang, WANG Hongbin, et al.Marine gas hydrate system:state of the art[J]. Geoscience, 2008:22(3):365-362.]

    Google Scholar

    [2] Keith C Hester,Peter G Brewer. Clathrate hydrates in nature[J]. Annu Rev Marine Sci., 2009, 1:303-327.

    Google Scholar

    [3] Peckmann J, Reimer A, Luth U, et al. Methane-derived carbonates and authigenic pyrite from the northwestern Black Sea[J]. Marine Geology, 2001, 177:129-150.

    Google Scholar

    [4] Peckmann J, Thiel V. Carbon cycling at ancient methane seeps[J]. Chemical Geology, 2004, 205:443-467.

    Google Scholar

    [5] 邬黛黛, 吴能友, 叶瑛, 等. 南海东部沉积物中烃类化合物的地球化学特征[J]. 石油学报, 2008, 29(4):516-521

    Google Scholar

    , 526.[WU Daidai, WU Nengyou, YE Ying, et al.Geochemical characteristics of hydrocarbon compounds in sediments of eastern South China Sea[J]. ACTA Petrolei Sinica, 2008, 29(4):516-521, 526.]

    Google Scholar

    [6] Sassen R, Roberts H H, Carney R, et al. Free hydrocarbon gas, gas hydrate, and authigenic minerals in chemosynthetic communities of the northern Gulf of Mexico continental slope:relation to microbial processes[J]. Chemical Geology, 2004, 205:195-217.

    Google Scholar

    [7] Teichert B M A, Bohrmann G, Suess E. Chemoherms on Hydrate Ridge-Unique microbially-mediated carbonate build-ups growing into the water column[J]. Palaeogeography, Palaeoclimatology, Palaeoecology, 2005, 227:67-85.

    Google Scholar

    [8] Zhang C L, Lanoil B. Geological and biogeochemical dynamics of gas hydrate-hydrocarbon seep systems[J]. Chemical Geology, 2004, 205:187-194.

    Google Scholar

    [9] Reitner J, Peckmann J, Blumenberg M, et al. Concretionary methane-seep carbonates and associated microbial communities in Black Sea sediments[J]. Palaeogeography, Palaeoclimatology, Palaeoecology, 2005, 227:18-30.

    Google Scholar

    [10] 邬黛黛,叶瑛,吴能友,等. 琼东南盆地与甲烷微渗漏有关的早期成岩作用和孔隙水化学组分异常[J].海洋学报,2009,31(2):86-96.

    Google Scholar

    [WU Daidai, YE Ying, WU Nengyou, et al.Early diagenesis records and chemical composition abnormalities in pore water for methane-seep in sediments from the southern Qiongdongnan Basin[J]. ACTA Oceanologica Sinica, 2009, 31(2):86-96.]

    Google Scholar

    [11] McDonnell S L, Czarnecki M. A note on gas hydrate in the northern sector of the South China Sea. In Natural gas hydrate:in oceanic and permafrost environments[M]. Edited by MD Max. Dordrecht; Boston, Kluwer Academic Publishers, 2000:239-244.

    Google Scholar

    [12] Guo T M, Wu B H, Zhu Y H, et al. A review on the gas hydrate research in China[J]. Journal of Petroleum Science & Engineering,2004, 41:11-20.

    Google Scholar

    [13] Wu S, Zhang G, Huang Y, et al. Gas hydrate occurrence on the continental slope of the northern South China Sea[J]. Marine Petroleum Geology, 2005, 22:403-412.

    Google Scholar

    [14] 吴时国,张光学,郭常升,等.东沙海区天然气水合物形成及分布的地质因素[J].石油学报,2004,25(4):7-12.

    Google Scholar

    [WU Shiguo, ZHANG Guangxue, GUO Changsheng, et al.Geological constraint on the distribution of gas hydrate in the Dongsha continental slope of South China Sea[J]. ACTA Petrolei Sinica, 2004, 25(4):7-12.]

    Google Scholar

    [15] Wang P, Prell W L, Blum P, et al. Shipboard Scientific Party. Leg 184 summary:exploring the Asian monsoon through drilling in the South China Sea[C]//Proceeding of the ODP, Initial Reports 184, College Station TX (Ocean Drilling Program), 2000:1-77.

    Google Scholar

    [16] Kvenvolden K A.Comparison of marine gas hydrate in sediments of an active and passive margin[J]. Marine and Petroleum Geology, 1985, 2:65-71.

    Google Scholar

    [17] Paull C K, Ussler Ⅲ W, Borowski W S, et al. Methane-rich plumes on the Carolina continental rise:associations with gas hydrates[J]. Geology, 1995, 23(1):89-92.

    Google Scholar

    [18] 祝有海,张光学,卢振权,等. 南海天然气水合物成矿条件与找矿前景[J]. 石油学报,2001,22(5):6-10.

    Google Scholar

    [ZHU Youhai, ZHANG Guangxue, LU Zhenquan, et al.The gas hydrate forming conditions and prospecting in the South China Sea[J]. ACTA Petrolei Sinica, 2001, 22(5):6-10.]

    Google Scholar

    [19] 姚伯初.南海的天然气水合物矿藏[J]. 热带海洋学报,2001,20(2):20-28.

    Google Scholar

    [YAO Bochu. The gas hydrate deposits in the South China Sea[J]. Journal of Tropical Oceanography, 2001, 20(2):20-28.]

    Google Scholar

    [20] Wu S G, Zhang G X, Huang Y Y, et a1. Gas hydrate occurrence on the continental slope of the northern South China Sea[J]. Marine and Petroleum Geology, 2005, 22:403-412.

    Google Scholar

    [21] 黄永样, Erwin Suess, 吴能友, 等. 南海北部陆坡甲烷和天然气水合物地质——中德合作SO-177航次成果专报[M]. 北京:地质出版社,2008:20-147.[HUANG Yongyang, Suess E, WU Nengyou, et al., Methane and gas hydrate geology of the Northern South China Sea:Sino-German Cooperative SO-177 Cruise report[M]. Beijing:Geological Publishing House, 2008

    Google Scholar

    :20-147.]

    Google Scholar

    [22] Lin S, Hsieh W C, Lim Y C, et al. Methane migration and its influence on sulfate reduction in the Good Weather Ridge region, South China Sea continental margin sediments[J]. Terr. Atmos. Ocean. Sci., 2006, 17:883-902.

    Google Scholar

    [23] Wu N Y, Dong H L, Suess E, et al. Mineralogical features and C-O isotope composition of methane-derived carbonate build-up found in the northeastern South China Sea[C]//2006 Western Pacific Geophysics Meeting, EOS Trans., AGU Abstract, 2006, 87:OS41F-01.

    Google Scholar

    [24] Yang T F, Chuang P C, Lin S, et al. Methane venting in gas hydrate potential area offshore of SW Taiwan:evidence of gas analysis of water column samples[J]. Terr. Atmos. Ocean. Sci., 2006, 17:933-950.

    Google Scholar

    [25] 苏新, 陈芳, 黄永样, 等. 南海北部冷泉区沉积物中微生物丰度与甲烷浓度变化关系的初步研究[J]. 现代地质, 2007, 21(1):101-104.

    Google Scholar

    [SU Xin, CHEN Fang, HUANG Yongyang, et al.Preliminary study on the correlation between microbial abundance and methane concentration in sediments from cold seeps in the Northern South China Sea[J]. Geoscience, 2007, 21(1):101-104.]

    Google Scholar

    [26] Chen D F, Huang Y Y, Yuan X L, et al. Seep carbonates and preserved methane oxidizing archaea and sulfate reducing bacteria fossils suggest recent gas venting on the seafloor in the Northeastern South China Sea[J]. Marine and Petroleum Geology, 2005, 22:613-621.

    Google Scholar

    [27] Pierrea C, Rouchy J M. Isotopic compositions of diagenetic dolomites in the Tortonian marls of the western Mediterranean margins:evidence of past gas hydrate formation and dissociation[J]. Chemical Geology, 2004, 205:469-484.

    Google Scholar

    [28] Cavagna S, Clari P, Martire L. The role of bacteria in the formation of cold seep carbonates:geological evidence from Monferrato (Tertiary, NW Italy)[J]. Sedimentary Geology, 1999, 126:253-270.

    Google Scholar

    [29] 陆红锋,刘坚,陈芳,等. 东沙海区浅层沉积物中黄铁矿异常及其意义[J]. 南海地质研究,2007,1:48-53.[LU Hongfeng, LIU Jian, CHEN Fang, et al.Authigenic Pyrite from the shallow sediments in Dongsha Area of South China Sea:implications for gas hydrate occurrence[J]. Geological South China Sea, 2007

    Google Scholar

    , 1:48-53.]

    Google Scholar

    [30] Bottcher M E, Lepland A. Biogeochemistry of sulfur in a sediment core from the west-central Baltic Sea:Evidence from stable isotopes and pyrite textures[J]. Journal of Marine Systems,2000, 25:299-312.

    Google Scholar

    [31] Wilkin R T, Arthur M A. Variations in pyrite texture, sulfur isotope composition, and iron systematics in the Black Sea:Evidence for Late Pleistocene to Holocene excursions of the O2-H2S redox transition[J]. Geochimica et Cosmochimica Acta, 2001, 65(9):1399-1416.

    Google Scholar

    [32] Alfonso P, Prol-Ledesma R M, Canet C, et al. Sulfur isotope geochemistry of the submarine hydrothermal coastal vents of Punta Mita, Mexico[J]. Journal of Geochemical Exploration, 2003, 78-79:301-304.

    Google Scholar

    [33] Lin S, Huang K, Chen S. Organic carbon deposition and its control on iron sulfide formation of the southern East China Sea continental shelf sediments[J]. Continental Shelf Research, 2000, 20:619-635.

    Google Scholar

    [34] Schoonen M A A. Mechanisms of sedimentary pyrite formation[C]//Sulfur biogeochemistry:past and present. Colorado,Amend J P, Edwards K J, Lyons T W. The Geological Society of America,Inc., 2004:117-134.

    Google Scholar

    [35] 刘坚, 陆红锋, 廖志良, 等. 东沙海域浅层沉积物硫化物分布特征及其与天然气水合物的关系[J]. 地学前缘, 2005, 12(3):258-262.

    Google Scholar

    [LIU Jin, LU Hongfeng, LIAO Zhiliang, et al.Distribution of sulfides in shallow sediments in Dongsha area, South China Sea, and its relationship to gas hydrate[J].Earth Science frontiers, 2005, 12(3):258-262.]

    Google Scholar

    [36] 陆红锋, 陈芳, 刘坚, 等. 天然气水合物沉积环境的自生矿物特点及其在南海的发育情况[J]. 南海地质研究, 2006, 1:93-104.[LU Hongfeng, CHEN Fang, LIU Jin, et al.Authigenic minerals associated with sedimentary environment of gas hydrate deposit and their occurrence in South China Sea[J]. Geological South China Sea, 2006

    Google Scholar

    :1:93-104.]

    Google Scholar

    [37] Ritger S, Carson B, Suess E. Methane-derived authigenic carbonates formed by subduction-induced pore-water explusion along the Oregon/Washington margin[J]. Geological society of America Bulletin, 1987, 98:147-156.

    Google Scholar

    [38] Stakes D S, Paduan J B. Cold-seeps and authigenic carbonate formation in Monterey Bay, California[J]. Marine Geology, 1999, 159:93-109.

    Google Scholar

    [39] Borowski W S, Paull C K, Ussler Ⅲ W. Global and local variations of interstitial sulfate gradients in deep-water, continental margin sediments:Sensitivity to underlying methane and gas hydrates[J]. Marine Geology, 1999, 159:131-141.

    Google Scholar

    [40] Hoehler S P, Grocke D R, Jenkynes H. C. Massive dissociation of gas hydrate during a Jurassic oceanic anoxic event[J]. Nature, 2000, 406(6794):392-395.

    Google Scholar

    [41] 蒋少涌,杨涛,薛紫晨,等. 南海北部海区海底沉积物中孔隙水的Cl-和SO42-浓度异常特征及其对天然气水合物的指示意义[J]. 现代地质,2005,19(1):45-54.

    Google Scholar

    [JIANG Shaoyong, YANG Tao, XUE Zichen, et al.Chlorine and sulfate concentration in pore waters from marine sediments in the north margin of the South China Sea and their implications for gas hydrate exploration[J]. Geoscience, 2005, 19(1):45-54.]

    Google Scholar

    [42] 邓希光,付少英,黄永样,等. 南海北部东沙群岛HD196站位地球化学特征及其对水合物的指示[J]. 现代地质,2006, 20(1):92-102.

    Google Scholar

    [DENG Xiguang, FU Shaoying, HUANG Yongyang, et al.Geochemical characteristics of sediments at site HD196 in Dongsha Islands, the north of the South China Sea, and their implication for gas hydrate[J]. Geoscience, 2005, 19(1):45-54.]

    Google Scholar

    [43] Borowski W S, Paull C K, Ussler Ⅲ W.Global and local variations of interstitial sulfate gradients in deep-water, continental margin sediments:Sensitivity to underlying methane and gas hydrates[J]. Marine Geology, 1999, 159:131-154.

    Google Scholar

    • Relative Articles
  • Cited by
  • Supplements
    • Proportional views
  • 加载中
通讯作者: 陈斌, bchen63@163.com
  • 1. 

    沈阳化工大学材料科学与工程学院 沈阳 110142

  1. 本站搜索
  2. 百度学术搜索
  3. 万方数据库搜索
  4. CNKI搜索
Export Citation
PDF
XML

Article Metrics

Article views(1058) PDF downloads(2) Cited by(0)

Access History

Other Articles By Authors

Catalog

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    版权所有：中国地质调查局发展研究中心 copyright @2020