Clay Mineralogy of deep-sea sediments from ODP, Bonins

来自博宁 ODP 的深海沉积物的粘土矿物学

• 批准号: 01430010
• 负责人: TAZAKI Kazue
• 金额: $ 20.16万
• 依托单位: Shimane University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (A)
• 财政年份: 1989
• 资助国家: 日本
• 起止时间: 1989 至 1991
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-01430010/
• 关键词: Volcanic sediments; Hydrothermal Minerals; Ocean Flux; Electron microscope; glauconite; Bacteria; Organic Carbon; Graphite; ODP Leg126; 伊豆・小笠原弧; 前弧; 熱水変質作用; ジプサム; ゼオライト; スメクタイト; 温度勾配; ODP Leg 126; 背弧; 火山活動; 変質; 沸石類; 石こう

Extensively altered pore water, with a composition different from that of any previously reported pore water by DSDP/ODP, have been recovered by deep coring of sediments in Izu-Bonin fore-arc sedimentary basin (Leg 126 shipboard scientific party, 1989 ; Fujioka et al., 1989). Upper oligocene vitric and pumiceous sandstone are the dominant products of Izu-Bonin fore-arc basin, where accumulation rates of volcanogenic sediment are extremely high and the sediments are susceptible to alteration. Here we report indications of biogenic alteration. A total of 20 volcanic sandstone samples from Holes 793B were observed by optical microscopy in preparations of polished thin section, transmission electron microscopy, X-ray powder diffraction, Fourier Transform Infrared Spectrometer, and X-ray photoelectron spectrometer.The data show presence of CH, COO, C-0, C-C groups and graphite, suggesting that the green spherical clays (glckuconitic mica clays) in the volcanic sandstone formed not only from … More hydrothermal alteration products, but also by microbiological interaction between filamentous bacteria and organic materials. The biological materials and debris appear to influence the nature of both the green spherical clays and graphite. Microscopical observation has revealed the presence of bacteria and graphite which can induce the formation of green spherical clays in hydrothermal fluids of porous volcanic sandstone. The sandstone contains numerous hydrothermally altered minerals such as zeolites, anhydrite, smectite, and cristobarite. According to these mineralogical assemblage, the conditions of the products were estimated to be below 200 ﾟC as low-temperature hydrothermal fields near seamounts (Tazaki, 1991 ; Tazaki and Fyfe, 1992).Recently the Joint Global Ocean Flux Study addresses the role of ocean processes in global biogeochemical cycles, with special attention is given to air-sea exchanges of C02. Our observations show that bacteria are abundant in marine hydrothermal systems, and they must contribute to later C02 generation in the altered materials during diagenesis. Less

在Izu-Bonin弧前沉积盆地的沉积物中，通过深取岩心，已经恢复了广泛改变的孔隙水，其组成与DSDP/ODP以前报道的任何孔隙水的组成不同（1989年船上科学小组第126次考察; Fujioka等人，1989年）。伊豆-小笠原弧前盆地上渐新统的玻璃质和浮石质砂岩是其主要产物，火山沉积物的堆积速率极高，沉积物易受蚀变的影响。在这里，我们报告的迹象，生物改变。通过光学显微镜、透射电镜、X射线粉末衍射、傅里叶变换红外光谱仪和X射线光电子能谱仪等手段对793 B孔20个火山岩样品进行了观察，发现火山岩样品中存在CH、COO、C-0、C-C基团和石墨。这表明火山砂岩中的绿色球形粘土（玻璃状云母粘土）不仅由 ...更多信息 热液蚀变产物，而且丝状菌和有机物质之间的微生物相互作用。生物材料和碎片似乎影响了绿色球形粘土和石墨的性质。显微镜观察表明，在多孔火山砂岩的热液流体中，细菌和石墨的存在可以诱导绿色球形粘土的形成。砂岩中含有大量热液蚀变矿物，如沸石、硬石膏、蒙皂石和方石英。根据这些矿物组合，估计这些产品的条件低于200摄氏度，是海山附近的低温热液场（Tazaki，1991年; Tazaki和Fyfe，1992年）。我们的观察表明，细菌是丰富的海洋热液系统中，它们必须有助于后来的CO2生成的蚀变物质在成岩作用。少

项目成果

鈴木徳行: "堆積物中におけるH_2Sの挙動:とくに有機イオウ化合物の形成について" 堆積学研究会誌. 32. (1990)

Noriyuki Suzuki：“沉积物中 H_2S 的行为：特别是关于有机硫化合物的形成”，沉积物学研究会杂志 32。（1990）。

田崎 和江: "微生物腐食を受けたコンクリ-トの鉱物学的研究(2)モルタルの微生物腐食実験" 粘土科学. 30. 178-186 (1990)

Kazue Tasaki：“微生物腐蚀混凝土的矿物学研究（2）砂浆的微生物腐蚀实验”Clay Science 30. 178-186（1990）。

田崎 和江: "バクテリアによる生体鉱物化作用" 鉱物学雑誌. 20. 93-104 (1991)

Kazue Tasaki：“细菌生物矿化”《矿物学杂志》20. 93-104 (1991)。

Hiroaki Ishiga: "Radiolarians from the Gympie Province,eastern Australia." Proceedings of the 90th Pacific Rim Congress.3. 187-189 (1990)

Hiroaki Ishiga：“来自澳大利亚东部金皮省的放射虫。”

高須 晃: " ^<40>Ar/ ^<39>Ar法による三波川変成岩の年代測定" 地球. 11. 661-666 (1989)

Akira Takasu：“用 ^<40>Ar/^<39>Ar 法测定三波川变质岩的年代”地球。11. 661-666 (1989)