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Properties and organic activation of ocean clay in the East Pacific

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Global Geology 2006年第1期9卷 19-29页

作者： Peiping Zhang Xiaoguo Chi Chunyan Tian Baojun Wang Huahua Lü xuefa shi College of Material Science and Engineering Jilin University Changchun 130026 Jilin China College of Earth Sciences Jilin University Changchun 130061 Jilin China Pivot Laboratory of National Ocean Department on Ocean Sediment and Environment Geology the First Institute of National Ocean Research Qingdao 266061 Shandong China

In order to make use of ocean clay reasonably and excavate its potential applications the properties of ocean clay in Chinese investigating area of the East Pacific have been tested with the chemical analysis, XRFS, ICP/MAS, granulometry and SSA, etc. The results show that the clay sediments of this area are rich in clay minerals, fine granularity, bigger SSA, bigger water absorbability and lower ion changing ability etc. To improve the adaptability of ocean clay and macromolecule materials, using the dry milling method with silane, aluminate, stearic acid coupling agents etc the properties of ocean clay are improved. The effect has been evaluated by testing the water absorbing of the modified ocean clay and their dispersing in paraffin liquid. The result is that KH550 is better than any other active reagents, and the best activation technics is that 1.5% (volume) of KH550 quantity, 20min of milling time. The DTA, XRD, SEM and IR analyses and SSA testing show that the organic activation can not change the mineral structure but can densify the structure of clay, and activation mechanism is chemical covered mainly and chemical combined secondly.

关键词： ocean clay organic activation structure property

Property and performance amelioration of pelagic clay from the East Pacific

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Global Geology 2008年第2期11卷 110-114页

作者： Peiping ZHANG Shufeng LIU xuefa shi Huahua LU Juanjuan LIU Xiaoguo CHI College of Earth Sciences Jilin University Changchun 130061 China Beijing General Research Institute for Non-ferrous Metals Beijing 100088 China Key Laboratory of Marine Sedimentology and Environmental Geology the First Institute of Oceanography State Oceanic Administration Qingdao 260061 Shandong China

To make use of the pelagic clay as polymer filling,the properties of clay sediments from the ocean investigation zone of China in the East Pacific were studied by the SSA,XRF,ICP/MAS,FTIR,XRD,SEM,DTA/TG and granularity distributing etc.,and experiments were settled to improve the whiteness and activation of the clay based on these *** with land clay,pelagic clay holds many particular features,such as fine particles and incompact accumulation,worse crystallization and more defects,high activity,complex mineral and chemical components,and low whiteness *** the purified pelagic clay with acids and zinc,then baked it at different temperatures,the whiteness of clay can be increased from 23.8% to 73.1%,and the optimized conditions is:consistency of vitriol 25%,ratio of clay to water 4∶1,reaction time 4h,reaction temperature 90℃,dosage of zinc 2.0 g/L,and baking temperature 700℃.And the SSA of whited clay is increased *** the dry milling method to modify the pelagic clay with organic reagents,the optimized technique is KH550,concentration 1.5%,reaction time 20 ***,FTIR and SEM testing indicate that the mechanism of organic activation was mainly surface absorbing and chemical combination secondly.

关键词： pelagic clay property whiteness increasing, performance amelioration

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无震脊或海山链俯冲对超俯冲带处的地质效应

海洋学报 2014年第5期36卷 107-123页

作者：鄢全树石学法国家海洋局第一海洋研究所海洋沉积与环境地质国家海洋局重点实验室山东青岛266061

全球海底分布着众多的无震脊或海山链,且在太平洋、印度洋及大西洋均存在靠近俯冲带的海岭。除小安德列斯弧外的巴拉克达脊和蒂勃朗脊起源自转换断层外,一般认为它们由与板块构造动力学迥异的地幔柱动力学所形成的。在板块汇聚边缘处,... 详细信息

全球海底分布着众多的无震脊或海山链,且在太平洋、印度洋及大西洋均存在靠近俯冲带的海岭。除小安德列斯弧外的巴拉克达脊和蒂勃朗脊起源自转换断层外,一般认为它们由与板块构造动力学迥异的地幔柱动力学所形成的。在板块汇聚边缘处,与扩张脊处所形成的正常洋壳一起,无震脊或海山链俯冲于陆缘弧或洋内弧之下,其对弧及弧后地区的地质效应(构造、地貌、地震以及岩浆作用等)有别于正常洋壳俯冲。无震脊或海山链的俯冲通常造成俯冲带地区的上驮板块的局部异常抬升、俯冲剥蚀作用效应的加强、海沟的向陆迁移以及地震强度的增加。同时,无震脊或海山链俯冲时,其携带的具富集地球化学特征的物质不仅影响着地幔地球化学,也对弧及弧后火山熔岩化学产生明显影响,并对超俯冲地区的热液矿床的形成产生重要影响。最后,本文指出了我国有关无震脊或海山链俯冲的可能的研究方向包括黄岩海山链俯冲对吕宋岛弧的可能影响、印度洋无震脊俯冲对青藏高原局部地区的影响,有我国学者参与的IODP344航次的研究对象——科科斯脊俯冲对哥斯达黎加地震成因的效应以及位于西太平洋地区靠近俯冲带的一些无震脊等。

关键词：无震脊海山链超俯冲带地质效应地震岩浆作用

Identification of the thick-layer greigite in sediments of the South Yellow Sea and its geological significances

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Identification of the thick-layer greigite in sediments of t...

Mineral Resource Science in China:Review and perspective

中国科学院地质与地球物理研究所2014年度（第14届）学术年会

作者： Jianxing Liu xuefa shi Shulan Ge Qingsong Liu Zhengquan Yao Gang Yang Paleomagnetism and Geochronology Laboratory (SKL-LE) Institute of Geology and GeophysicsChinese Academy of Sciences University of Chinese Academy of Sciences Key Laboratory of Marine Sedimentation and Environmental Geology First Institute of OceanographyState Oceanic Administration

Magnetic minerals in sediments of the continental shelf are sensitive to environmental ***, to determine the exact phases of magnetic minerals is the prerequisite to investigate the paleoenvironmental significances. In this study, a comprehensive rock magnetic investigation, coupled with mineralogical studies, was carried out on the long core NHH01(with a length of 125.64 m) from the central continental shelf of the South Yellow Sea. Single-domain greigite was identified as the dominant magnetic carrier in sediments between44.90 and 51.80 m, and terrigenous magnetite is the major magnetic phase in the adjacent layers. The existence of greigite unambiguously indicates an anoxic *** tentatively interpreted that such an environment could be formed by the fast sea level changes, long-existing of the cold eddies during warm stages, or in a lake which might be related to locally tectonic uplifting. Therefore, the occurrence of the thick-layer greigite could supply a new perspective to paleoenvironmental or even tectonic studies.

关键词： Rock magnetism Greigite Continental shelf environment South Yellow Sea

来源： cnki会议评论

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Geography and Sustainability 2021年第2期2卷 107-114页

作者： Mingguo Zhai Ruizhong Hu Yan Wang Shaoyong Jiang Rucheng Wang Jianwei Li Huayong Chen Zhiming Yang Qingtian Lü Tao Qi xuefa shi Yuansheng Li Jianming Liu Ziying Li Xiyan Zhu Institute of Geology and Geophysics Chinese Academy of SciencesBeijing 100029China Institute of Geochemistry Chinese Academy of SciencesGuiyang 550081China Guangzhou Institute of Geochemistry Chinese Academy of SciencesGuangzhou 510640China China University of Geosciences Wuhan 430074China Nanjing University Nanjing 210023China Institute of Geology Chinese Academy of Geological SciencesBeijing 100037China Chinese Academy of Geological Sciences Beijing 100037China Institute of Process Engineering Chinese Academy of SciencesBeijing 100190China First Institute of Oceanography Ministry of Natural Resources of the People’s Republic of ChinaQingdao 266061China Polar Research Institute of China Shanghai 200136China Beijing Research Institute of Uranium Geology Beijing 100029China

Mineral resources are essential to prosperity and security of modern *** mineral resources can guar-antee sustainable development of economy in countries,especially those developing countries,has long been a focus of attention of international *** paper provides a comprehensive summary for major ad-vance of the research on mineral resources in past decades,and proposes some key issues regarding ore-forming mechanism,exploration and utilization of major and critical mineral *** the basis of these aspects,we also identify four priority science issues to be addressed in the future,including(1)mechanism of both metal circulation and extremely high concentration,(2)theories and technologies of prospecting deep-earth resources,(3)investigation of mineral resources in seafloor and polar regions,and(4)efficient,clean and recycling utiliza-tion of mineral *** can be expected that new advances in these four issues would tremendously promote the innovation of mineral resource science,and provide scientific and technologic support to meet the demand of mineral resources for human activities and the harmonious development of both mineral-resource exploration and ecological restoration.

关键词： Mineral resource science Review Priority science issues

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西太平洋岛弧-弧后盆地热液活动及成矿作用

吉林大学学报（地球科学版） 2016年第4期46卷 1124-1138页

作者：石学法李兵鄢全树叶俊海洋沉积与环境地质国家海洋局重点实验室国家海洋局第一海洋研究所山东青岛266061 青岛海洋科学与技术国家实验室海洋地质过程与环境功能实验室山东青岛266061

岛弧-弧后盆地是海底热液硫化物发育的重要环境。本文总结了近几十年对西太平洋地区岛弧-弧后盆地热液活动调查及研究的成果,阐述了岛弧-弧后盆地热液活动的分布规律、构造环境、热液喷口水深和流体温度变化关系、相分离过程以及热液硫... 详细信息

岛弧-弧后盆地是海底热液硫化物发育的重要环境。本文总结了近几十年对西太平洋地区岛弧-弧后盆地热液活动调查及研究的成果,阐述了岛弧-弧后盆地热液活动的分布规律、构造环境、热液喷口水深和流体温度变化关系、相分离过程以及热液硫化物的金属元素组成特征,分析了成矿元素富集规律和控矿因素。研究认为,随着岛弧-弧后盆地热液喷口所处水深的增加,其最高喷口流体温度也相应增加,这与相分离过程有关;岛弧-弧后盆地热液硫化物与洋中脊硫化物不同,以Fe-Zn-Pb型硫化物为主,显著富集Zn、Pb、Au、Ag等金属元素;热液成矿作用主要受到岛弧及弧后扩张处的岩浆作用、相分离、基岩、弧后扩张速率、沉积物盖层等5类因素的制约。

关键词：西太平洋岛弧-弧后盆地热液活动硫化物相分离控矿因素

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深海沉积与全球变化研究的前缘与挑战

地学前缘 2022年第4期29卷 1-9页

作者：刘志飞陈建芳石学法同济大学海洋地质国家重点实验室上海200092 自然资源部第二海洋研究所海洋生态系统动力学重点实验室浙江杭州310012 自然资源部第一海洋研究所海洋地质与成矿作用重点实验室山东青岛266061

海洋正在经历变暖和酸化等人类活动引发的全球变化的影响,而深海沉积储存着地球演变历史时期由自然因素驱动过去全球变化的详细档案,通过探究其现今和过去全球变化过程,能够揭示全球变化的特征和规律,为预测未来变化提供依据。近年来在... 详细信息

海洋正在经历变暖和酸化等人类活动引发的全球变化的影响,而深海沉积储存着地球演变历史时期由自然因素驱动过去全球变化的详细档案,通过探究其现今和过去全球变化过程,能够揭示全球变化的特征和规律,为预测未来变化提供依据。近年来在该领域的突出研究进展,是针对社会选择的未来排放轨迹,在深海记录中都能够找到相应的类似情形,用于评估未来地球系统各种变化的过程和后果。其中,以Dansgaard-Oeschger变化为代表的千年尺度事件、以厄尔尼诺南方涛动(ENSO)和北大西洋涛动(NAO)为代表的十年尺度气候变化事件,是最接近现今地球变暖的快速气候变化场景。地球系统的发展轨迹目前正处于人类排放温室气体的“热室地球”路径的起点上,如果地球超过了这个“临界点”,它将沿着一条不可逆的道路进入“热室地球”状态,另一种路径则是通向“稳定地球”状态。深海沉积档案中的类似情形能够为社会选择未来排放的轨迹提供重要参考。全球变化研究面临的重大挑战是重新认识其关键过程的理论机制。以海洋变暖和酸化影响硅藻和颗石藻的海洋生物泵过程为例,传统知识认为酸化有利于硅藻建造,但最新的围隔实验研究却发现酸化大幅减少全球硅藻输出;传统知识认为酸化导致海洋生物钙化危机,但近期针对中生代大洋缺氧事件的黑色页岩研究,发现颗石藻的碳酸钙输出在海洋酸化期间大幅增加。这些颠覆性的认识严重挑战了传统全球变化某些关键过程的理论体系。

关键词：深海沉积全球变化海洋变暖海洋酸化快速气候变化临界点

Enhanced weathering input from South Asia to the Indian Ocean since the late Eocene

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Science Bulletin 2023年第3期68卷 305-313,M0004页

作者： Zehua Song shiming Wan Christophe Colin Christian France-Lanord Zhaojie Yu Arnaud Dapoigny Hualong Jin Mengjun Li Jin Zhang Debo Zhao xuefa shi Anchun Li Key Laboratory of Marine Geology and Environment Institute of OceanologyChinese Academy of SciencesQingdao 266071China Laboratory for Marine Geology Qingdao National Laboratory for Marine Science and TechnologyQingdao 266061China UniversitéParis-Saclay Centre National de la Recherche Scientifique(CNRS)Géosciences Paris-Saclay(GEOPS)Orsay 91405France Center for Excellence in Quaternary Science and Global Change Chinese Academy of SciencesXi’an 710061China Centre de Recherches Pétrographiques et Géochimiques(CRPG) Centre National de la Recherche Scientifique(CNRS)-Universitéde LorraineVandoeuvre les Nancy 54501France Laboratoire des Sciences du Climat et de l’Environnement LSCE/IPSLCEA-CNRS-UVSQUniversitéParis-SaclayGif-sur-Yvette 91191France Key Laboratory of Marine Sedimentology and Environmental Geology First Institute of OceanographyMinistry of Natural ResourcesQingdao 266061China

nhanced silicate weathering induced by the uplift of the Himalayan-Tibetan Plateau(HTP)has been considered as the major cause of pCO_(2) decline and Cenozoic ***,this hypothesis remains to be validated,largely due to the lack of a reliable reconstruction of the HTP weathering ***,we present a 37-million-year record of the difference in the seawater radiogenic neodymium isotopic composition(△ε_(Nd))of Ocean Drilling Program(ODP)sites and Fe-Mn crusts between the northern and central Indian Ocean,which indicates the contribution of regional weathering input from the South Asian continent to the Indian *** results show a long-term increase in △ε_(Nd) and thus provide the first critical evidence of enhanced South Asian weathering input since the late *** evolution coincided well with major pulses of surface uplift in the HTP and global climatic *** foraminiferal eNd record suggests that tectonic uplift and silicate weathering in South Asia,especially in the Himalayas,might have played a significant role in the late Cenozoic cooling.

关键词： South Asian weathering input Himalayan-Tibetan Plateau uplift Cenozoic global cooling Foraminiferal eNd record Indian Ocean ODP Site 758

Mineralogical study of surface sediments in the western Arctic Ocean and their implications for material sources

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Advances in Polar Science 2014年第3期25卷 192-203页

作者： DONG Linsen shi xuefa LIU Yanguang FANG Xisheng CHEN Zhihua WANG Chunjuan ZOU Jianjun HUANG Yuanhui The First Institute of Oceanography SOA Qingdao 266061 China The First Institute of Oceanography SOA

Mineralogical analysis was performed on bulk sediments of 79 surface samples using X-ray diffraction. The analytical results, combined with data on ocean currents and the regional geological background, were used to investigate the mineral sources. Mineral assemblages in sediments and their distribution in the study area indicate that the material sources are complex. （1） Feldspar is abundant in the sediments of the middle Chukchi Sea near the Bering Strait, originating from sediments in the Anadyr River carried by the Anadyr Current. Sediments deposited on the western side of the Chukchi Sea are rich in feldspar. Compared with other areas, sediments in this region are rich in hornblende transported from volcanic and sedimentary rocks in Siberia by the Anadyr Stream and the Siberian Coastal Current. Sediments in the eastern Chukchi Sea are rich in quartz sourced from sediments of the Yukon and Kuskokwim rivers carried by the Alaska Coastal Current. Sediments in the northern Chukchi Sea are rich in quartz and carbonates from the Mackenzie River sediments. （2） Sediments of the southern and central Canada Basin contain little calcite and dolomite, mainly due to the small impact of the Beaufort Gyre carrying carbonates from the Canadian Arctic Islands. Compared with other areas, the mica content in the region is high, implying that the Laptev Sea is the main sediment source for the southern and central Canada Basin. In the other deep sea areas, calcite and dolomite levels are high caused by the input of large amounts of sediment carried by the Beaufort Gyre from the Canadian Arctic Islands （Banks and Victoria）. The Siberian Laptev Sea also provides small amounts of sediment for this region. Furthermore, the Atlantic mid-water contributes some fine-grained material to the entire deep western Arctic Ocean.

关键词： X-ray diffraction western Arctic Ocean minerals surface sediments sources