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赤道东太平洋C—C区硅质沉积物的磁性特征及细菌合成磁铁矿

张卫国,  俞立中,  丛友滋

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文章导航 > 沉积学报  > 2003 >  21(3): 467-472
张卫国, 俞立中, 丛友滋. 赤道东太平洋C—C区硅质沉积物的磁性特征及细菌合成磁铁矿[J]. 沉积学报, 2003, 21(3): 467-472.
引用本文: 张卫国, 俞立中, 丛友滋. 赤道东太平洋C—C区硅质沉积物的磁性特征及细菌合成磁铁矿[J]. 沉积学报, 2003, 21(3): 467-472.
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ZHANG Wei-guo, YU Li-zhong, CONG You-zi. Magnetic Properties of Siliceous Sediments from the Clarion-Clipperton Zone, Northeastern Equatorial Pacific, and the Occurrence of Bacterial Magnetite[J]. Acta Sedimentologica Sinica, 2003, 21(3): 467-472.
Citation: ZHANG Wei-guo, YU Li-zhong, CONG You-zi. Magnetic Properties of Siliceous Sediments from the Clarion-Clipperton Zone, Northeastern Equatorial Pacific, and the Occurrence of Bacterial Magnetite[J]. Acta Sedimentologica Sinica, 2003, 21(3): 467-472.
shu

赤道东太平洋C—C区硅质沉积物的磁性特征及细菌合成磁铁矿

  • 1.

    华东师范大学河口海岸国家重点实验室 上海 200062;

  • 2.

    国家海洋局第一海洋研究所 山东青岛 266003

基金项目: 国家自然科学基金(批准号:40001020)；上海市重点学科资助
详细信息
    作者简介:

    张卫国,男,1971年出生,副研究员,博士,环境磁学

  • 中图分类号: P736.4

Magnetic Properties of Siliceous Sediments from the Clarion-Clipperton Zone, Northeastern Equatorial Pacific, and the Occurrence of Bacterial Magnetite

  • 1.

    State Key Laboratory of Estuarine and Coastal Research, East China Normal University,Shanghai 200062;

  • 2.

    No. 1 Oceanography Institute,State Ocean Bureau,Qingdao Shandong 266003

    摘要
  • 摘要: 对分布于赤道东太平洋克拉里昂和克里帕顿断裂带之间 (C—C区 )的硅质沉积物所作的环境磁学研究表明,沉积物的磁性特征由亚铁磁性矿物主导,亚铁磁性矿物颗粒以单畴 (SD)和超顺磁 (SP)为主。磁性参数和透射电镜(TEM )分析表明,该区沉积物中存在着细菌合成的磁铁矿,并观察到磁铁矿存在不同程度的溶解。这一发现是微生物参与C—C区铁元素循环的直接证据。不完整反铁磁性矿物在氧化性较强的西区沉积物中含量较高,且随着纬度升高而增加,显示随着远离赤道,沉积物氧化性趋强.
    Abstract: It is indicated that ferrimagnetic minerals dominate the magnetic properties of surface siliceous sediments in the Clarion-Clipperton (C—C) zone, northeastern equatorial Pacific. The ferrimagnetic minerals are mainly single domain (SD) an d superparamagentic(SP) in size. Magnetic parameters, together with TEM analysis, reveal the presence of bacterial magnetite, which undergoes dissolution to var ying extent. Such a phenomena is indicative of an active iron cycle involving mi crobes. Imperfect anti-ferromagnetic minerals show a higher content in the sed iments of the western region of C—C zone, and increase toward high latitude. It is suggested that, with increased distance from the equator, sediments become m ore oxidized.
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    • 参考文献(17)
  • [1] Thompson R, Oldfield F. Environmental Magnetism[M]. London: Allen and Unwin, 1986. 1～227
    [2] 许东禹,姚德,梁宏锋等.多金属结核形成的古海洋环境[M]. 北京:地质出版社,1994,1～111[Xu Dongyu, Rao De, Liang Hongfeng, et al. Paleoceanographic environment of polymetallic nodules formation[M]. Beijing: Geological Publishing House, 1994. 1～111]
    [3] 金翔龙主编,东太平洋多金属结核矿带海洋地质与矿床特征[M].北京:海洋出版社,1997.84～107[Jing Xianglong ed. Marine geology and deposit features for mineral belt of polymetallic nodules in Eastern Pacific Ocean[M]. Beijing: Ocean Press, 1997. 84～107]
    [4] 陈建林,张富生,边立曾. 超微生物是大洋多金属结核成矿的建造者[J].科学通报,1997,42(4):337～343[Chen Jianlin, Zhang Fusheng, Bian Lizeng. Ultra-microseism as the builder of deep sea nodules[J]. Chinese Science Bulletin, 1997, 42(4): 337～343]
    [5] 史君贤,陈忠元,杨季芳等.东太平洋铁锰结核区微生物的丰度及其成矿作用研究[J].海洋与湖沼,1998,29(5):458～466[Shi Junxian, Chen Zhongyuan, Yang Jifang, et al. A study on bacterial abundance and its mineralization in iron-manganese nodule area of the eastern Pacific Ocean[J]. Oceanologia et Limnologia Sinica, 1998, 29(5): 458～466]
    [6] 程振波,鞠小华,兰东兆.东北太平洋CC区表层沉积物中的微体生物化石研究[J].海洋地质与第四纪地质,1998,18(4):43～51[Cheng Zhenbo, Ju Xiaohua, Lan Dongzhao. Study of microfossils in the surface sediments from the CC area of the northeastern Pacific Ocean[J]. Marine Geology and Quaternary Geology, 1998, 18(4): 43～51]
    [7] Jeong K S, Kang J K, Chough S K. Sedimentary processes and manganese nodule formation in the Korea Deep Ocean Study (KODOS) area, western part of Clarion-Clipperton fracture zone, northeastern equatorial Pacific[J]. Mar. Geol. 1994, 122: 125～150
    [8] Oldfield F, Yu L. The influence of particle size variations on the magnetic properties of sediments from the north-eastern Irish Sea[J]. Sedimentology,1994, 41:1093～1108
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    [10] Oldfield F. Toward the discrimination of fine-grained ferrimagnets by magnetic measurements in lake and near-shore marine sediments[J]. J. Geophys. Res.(B), 1994, 99: 9045～9050
    [11] Hesse P P. Mineral magnetic 'tracing' of aeolian dust in southwest Pacific sediments[J]. Palaeogeogr. Palaeoclimatol. Palaeoecol., 1997, 131: 327～353
    [12] Bazylinski D A, Moskowitz B M. Microbial biomineralization of magnetic iron minerals: microbiology, magnetism and environmental significance[J]. Rev. Mineral., 1997, 35: 181～223
    [13] Yamazaki T, Katsura I, Marumo K. Origin of stable remanent magnetization of siliceous sediments in the central equatorial Pacific[J]. Earth Planet. Sci. Lett., 1991, 105: 81～93
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    [15] Vali H, Kirschvink J L. Magnetofossil dissolution in a palaeomagnetically unstable deep-sea sediment[J]. Nature, 1989, 339: 203～206
    [16] Hesse P P. Evidence for bacterial palaeoecological origin of mineral magnetic cycles in oxic and sub-oxic Tasman Sea sediments[J]. Mar. Geol., 1994, 117: 1～17
    [17] Itoh Y, Katsura I, Danhara T. Magnetic glasses in the Azuki and AT volcanic ashes in Japan[J]. Earth Planet Sci. Lett., 1989, 96: 220～228
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出版历程
  • 收稿日期:  2002-04-15
  • 修回日期:  2003-01-10
  • 刊出日期:  2003-09-10

目录

    赤道东太平洋C—C区硅质沉积物的磁性特征及细菌合成磁铁矿

    • 1. 华东师范大学河口海岸国家重点实验室 上海 200062;
    • 2. 国家海洋局第一海洋研究所 山东青岛 266003
      • 基金项目:  国家自然科学基金(批准号:40001020)；上海市重点学科资助
      作者简介:

      张卫国,男,1971年出生,副研究员,博士,环境磁学

    • 收稿日期: 2002-04-15
    • 修回日期: 2003-01-10
    • 刊出日期: 2003-09-10

    • 中图分类号: P736.4

    摘要: 对分布于赤道东太平洋克拉里昂和克里帕顿断裂带之间 (C—C区 )的硅质沉积物所作的环境磁学研究表明,沉积物的磁性特征由亚铁磁性矿物主导,亚铁磁性矿物颗粒以单畴 (SD)和超顺磁 (SP)为主。磁性参数和透射电镜(TEM )分析表明,该区沉积物中存在着细菌合成的磁铁矿,并观察到磁铁矿存在不同程度的溶解。这一发现是微生物参与C—C区铁元素循环的直接证据。不完整反铁磁性矿物在氧化性较强的西区沉积物中含量较高,且随着纬度升高而增加,显示随着远离赤道,沉积物氧化性趋强.

    English Abstract

    张卫国, 俞立中, 丛友滋. 赤道东太平洋C—C区硅质沉积物的磁性特征及细菌合成磁铁矿[J]. 沉积学报, 2003, 21(3): 467-472.
    引用本文: 张卫国, 俞立中, 丛友滋. 赤道东太平洋C—C区硅质沉积物的磁性特征及细菌合成磁铁矿[J]. 沉积学报, 2003, 21(3): 467-472.
    shu
    ZHANG Wei-guo, YU Li-zhong, CONG You-zi. Magnetic Properties of Siliceous Sediments from the Clarion-Clipperton Zone, Northeastern Equatorial Pacific, and the Occurrence of Bacterial Magnetite[J]. Acta Sedimentologica Sinica, 2003, 21(3): 467-472.
    Citation: ZHANG Wei-guo, YU Li-zhong, CONG You-zi. Magnetic Properties of Siliceous Sediments from the Clarion-Clipperton Zone, Northeastern Equatorial Pacific, and the Occurrence of Bacterial Magnetite[J]. Acta Sedimentologica Sinica, 2003, 21(3): 467-472.
    shu

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