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GEOCHEMISTRY OF TRACE ELEMENTS IN DEEP-SEA SEDIMENTS OF THE SOUTH CHINA SEA

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Science in China,Ser.B 1986年第1期29卷 85-95页

作者：李粹中 Second Institute of oceanography national bureau of oceanography Hangzhou

Mathematical-geological studies of trace elements in deep-sea sediments of the South China Sea have been made on the basis of the information developed from Q-factor analysis. The factors controlling the trace element distribution appear to be (ⅰ) sedimentary facies related to water depth and submarine volcanism, and (ⅱ) authigenous precipitation associated with chemical or biochemical process. The characteristics of migration and concentration of trace elements are described as follows: (ⅰ) The elements Ni, Cu and Co are probably related to the adsorption of autMgenous colloidal Mn-solids; (ⅱ) some elements, such as B, Cr, Zr and Ti are largely adsorbed on clay minerals; (ⅲ) both Sr and Ca are of biogeneous enrichment; (ⅳ) Ba intergrows with Cu, Pb and Ag, indicating that Ba results mainly from submarine volcanic activity and partly from biological process.

关键词： deep

DATA ON LOWEST SEA LEVEL OF THE EAST CHINA SEA IN LATE PLEISTOCENE

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Science China Chemistry 1984年第8期27卷 865-876页

作者：彭阜南眭良仁梁居廷沈华悌 national bureau of oceanography Second Institute of oceanography Hangzhou

This paper demonstrates that the submarine shell bank and terrace loeated 128°00’ E,31°30’N (Site 7242) and about-155 m deep in the East China Sea were formed and depositedalong the coast under the condition of th... 详细信息

关键词： DATA ON LOWEST SEA LEVEL OF THE EAST CHINA SEA IN LATE PLEISTOCENE EAST NNE SEA NEE

CONCENTRATION, SOURCE OF MANGANESE AND IRON IN FERROMANGANESE NODULES AND THE RELATIONSHIP BETWEEN NODULES AND SEDIMENTARY ENVIRONMENTS IN NORTH PACIFIC REGION

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Science China Chemistry 1989年第11期32卷 1372-1382页

作者：鲍根德 The Second Institute of oceanography National Bureau of Oceanography Hangzhou 310012 PRC

The concentration, source of manganese and iron in ferromanganese nodules and therelation between nodules and sedimentary environments are discussed in detail by asynthetical study on chemical information of ferromanganese nodules and correspondingsediment, pore water and geological, biological (bacteria) information in 26 stations fromthe North Pacific region (7- 13°N, 178- 165°W). The result shows that (i) the concen-tration and distribution characteristics of magnese and iron in ferromanganese nod-ules differ in different types of nodules, however, the concentration decreases with theincrease in grain sizes of nodules; (ii) the source of iron in different types of nodulesis basically the same, i. e. the slow sedimentation of overlying water; (iii) manganesein nodules comes mainly from the diffusion of Mn^(2+) in the pore water, and Mn^(2+) fromthe reduction of Mn^(4+) in sediments by the medium of bacteria. As the distribution of bac-teria is believed to be strongly affected by the sedimentary environment, differenttypes of nodules are formed in the different environments.

关键词： ferromanganese nodule sediment pore waters bacteria sedimentary environment Pacific

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DIFFUSION AND DEPOSITION OF IRON AND CONTROLLING FACTORS ON THE EAST CHINA SEA CONTINENTAL SHELF

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Acta Oceanologica Sinica 1985年第2期4卷 211-221页

作者：王成厚程先豪 Second Institute of oceanography national bureau of oceanography Hangzhou

Research is conducted on the following questions: 1) the seasonal and spacial changes of Fe2+ concentration in overlying water and interstitial water; 2) the profiles of Fe3+ and Fe2+and total Mn in solid phase of sediment; and 3) the estimation and comparison of Fe and Mn diffusion and deposition *** complex relation among the early diagenesis of iron, the grain size composition in solid phase of sediment and the factors of pH and Eh as well as dissolved oxygen are reflected by seasonal and space relation of Fe2+ *** geochemical activity and role of iron and manganese during diagenetic processes is discussed and estimated by calculating and comparing deposition and diffusion fluxes of both the elements.

关键词： DIFFUSION AND DEPOSITION OF IRON AND CONTROLLING FACTORS ON THE EAST CHINA SEA CONTINENTAL SHELF than

MECHANISM OF URANIUM ADSORPTION ON AMIDOXIME RESIN

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Acta Oceanologica Sinica 1985年第3期4卷 417-422页

作者：郑邦锭蔡水源庄明江蒋龙生 Third Institute of oceanography national bureau of oceanography Xiamen

The mechanism of uranium adsorption from seawater by polyacrylamidoxime resin is investigated by means of the experiments of adsorption isotherm and adsorption rate. The uranium uptake increases with the adsorption temperature and varies with the pH of seawater. Thermochemical and kinetic calculation show that the enthalpy change （△H） and the activation energy （E） of the uranium adsorption are 42.4 42.4 kJ mol-1 and 41.2 kJ mol-1 respectively, indicating that the uranium adsorption on the resin proceeds via a certain complex chemical reaction in which the amidoxime group in the resin chelates uranyl ions.

关键词： MECHANISM OF URANIUM ADSORPTION ON AMIDOXIME RESIN OH OC

GEOCHEMICAL CHARACTERISTICS OF INTERSTITIAL WATER OF THE BOHAI GULF

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Acta Oceanologica Sinica 1985年第2期4卷 222-231页

作者：廖先贵张湘君 Second Institute of oceanography national bureau of oceanography Hangzhou

This paper discusses the geochemical characteristics of the interstitial water of the Bohai Gulf, where the main salt contents (K+, Na+, Ca++ Mg+ + , C1-, HCO3-, SO4-) in 55 sedimentary layers of 13 cores (3-4 m in length) and those of bottom seawater have been determined and the exchange capacity and exchange cations (K+, Na+, Ca++, Mg++) of the layers analysed (see Fig. 1)Fig. J. The stations of core samplings in the Bohai Gult.

关键词： Ca CI GEOCHEMICAL CHARACTERISTICS OF INTERSTITIAL WATER OF THE BOHAI GULF

TOPOGRAPHY AND SEDIMENTATION OF THE EAST CHINA SEA SHELFBREAK

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Acta Oceanologica Sinica 1985年第2期4卷 276-288页

作者：谢钦春叶银灿陆炳文 Second Institute of oceanography national bureau of oceanography Hangzhou

The shelfbreak of the East China Sea lies in an area with a marked change in gradient between the continental shelf and the slope （west wall of Okinawa Trough）, depth ranging from 132 to 162m with an average of about 147 m, and the width ranging from 4 to 18 km. The types of the shelfbreak differ markedly from the north to the south, having an abrupt break in the south and a gradual break in the middle and the north. Without permanent deposition of fine-grained material formed at the shelfbreak zone, it serves only as a temporary resting place for terrigenous sediments moving toward the Okinawa Trough through submarine canyons as important transport conduits.

关键词： show TOPOGRAPHY AND SEDIMENTATION OF THE EAST CHINA SEA SHELFBREAK EAST SEA

PRELIMINARY STUDY ON GENETIC ENVIRONMENT OF SEDIMENTS OF THE EAST CHINA SEA

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Acta Oceanologica Sinica 1985年第2期4卷 254-265页

作者：李粹中张富元王秀昌 Second Institute of oceanography national bureau of oceanography Hangzhou

In order to show the relationship between the grain size model and sedimentary environment of the East China Sea, typical samples have been selected from analytical data of 1233 surface sediments, and mathematical statistic analyses of these samples have been made. Based on these analyses and combined with the compositions of the sediments and history of its formation, the authors try to divide the genetic types of the sediments of the East China Sea, with focus on the discussion of the characteristics of ancient and present hydrodynamic environments.

关键词： EAST show than

DETERMINATION OF 210Pb IN MARINE SEDIMENTS AND ITS APPLICATION TO GEOCHRONOLOGY

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Acta Oceanologica Sinica 1985年第3期4卷 402-410页

作者：邹汉阳余兴光 Third Institute of oceanography national bureau of oceanography Xiamen

A method of electrodeposit-PbSO4 precipitation-β counting has been developed for the determination of 210Pb in marine sediments. The chemical yield of lead is 85-90%, coincident with radiochemical yield. The decontamination factors for 90Sr, 106Ru, 137Cs, 60Co, 65Zn, 55+59Fe and 54Mn are greater than 103. The precision is 2.9%. The typical 210Pb profiles of five cores were successfully obtained in the Changjiang Estuary and adjacent continental shelf. The sedimentation rates of the cores from five stations of G8132, G8133.G8134, G8135 and G8139 are 0.72, 0.86, 0.37, 0.33 and 0.42 cm/yr respectively.

关键词： Pb IN MARINE SEDIMENTS AND ITS APPLICATION TO GEOCHRONOLOGY DETERMINATION OF