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Modern microbialites and their environmental signifi-cance,Meiji reef atoll,Nansha (Spratly) Islands,South China Sea

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Science China Earth sciences 2008年第4期51卷 608-617页

作者： SHEN JianWei1 & WANG Yue1,2 1 Department of Marine Geology, South China Sea institute of Oceanology Key Laboratory of Marginal Sea Geology, South China Sea institute of Oceanology and guangzhou institute of{4., Chinese academy of sciences, guangzhou 5103.1, China 2 Graduate University of the Chinese academy of sciences, Beijing 10004., China Department of Marine Geology South China Sea Institute of Oceanology Guangzhou China Key Laboratory of Marginal Sea Geology South China Sea Institute of Oceanology and Guangzhou Institute of Geochemistry Chinese Academy of Sciences Guangzhou

Meiji (Mischief) coral atoll, in Nansha (Spratly) Islands, South China Sea, consists of an annular reef rim surrounding a central lagoon. On the atoll rim there are either protuberant 'motu' (small coral patch reefs on the rim of atoll) islets or lower sandy cays that contain modern microbialite deposits on the corals in pinnacles and surrounding bottoms of the atoll. Microbialites, including villiform, hairy, and thin spine growth forms, as well as gelatinous masses, mats and encrustation, developed on coral colonies and atoll rim sediments between 0 and 15 m deep-water settings. The microbialites were produced by natural populations of filamentous cyanobacteria and grew on (1) bulbous corals together with Acropora sp., (2) on massive colonies of Galaxea fascicularis, (3. on dead Montipora digitata, and (4. on dead Acropora teres, some hairy microbialite growing around broken coral branches. This study demonstrates that microbial carbonates are developed in coral reefs of South China Sea and indicates that microbial processes may be important in the construction of modern reef systems. The results have significance in the determination of nature and composition in microorganisms implied in the formation ancient microbialites, and permit evaluation of the importance of microbial deposits in mo-dern coral reefs and of 'microbialites' in biogeochemical cycles of modern coral reef systems. The re-sults also provide evidence of modern analogues for ancient microbialites in shallow-water settings, and combine with sedimentological studies of ancient microbialites to understand their controls.

关键词： Microbialite Meiji reef Nansha Island South China Sea

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Association between Alcohol, Smoking and HLA-DQA1*0201 Genotype in Psoriasis

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Acta Biochimica et Biophysica Sinica 2004年第9期36卷 597-602页

作者： Guang-Yong ZHENG1,2#, Sheng-Cai WEI3., Tie-Liu SHI1, and Yi-Xue LI1* 1Bioinformatics Center, Shanghai institutes for Biological sciences, Chinese academy of sciences, Graduate School of the Chinese academy of sciences, Shanghai 20003., China Research Center for Proteome Analysis, institute of Biochemistry and Cell Biology, Shanghai institutes for Biological sciences, Chinese academy of sciences, Graduate School of the Chinese academy of sciences, Shanghai 20003., China 3.13. institute of Dermatology, {13. 510095, China Bioinformatics Center Shanghai Institutes for Biological Sciences Chinese Academy of Sciences Graduate School of the Chinese Academy of Sciences

Psoriasis is a chronic skin disease triggered by genetic, environment or other risk factors such as infection, drugs, stress, moisture, alcohol, and smoking. A major psoriasis susceptibility locus at 6p21.3. has been identified. Further studies found that HLA-DQA1*0201 allele was associated with psoriasis. However, there were few data exploring an association between the environmental factors and susceptibility genes. In this study, the samples of 189 patients with psoriasis and 3.3.healthy controls were collected with their consent and were carried on analysis through polymerase chain reaction sequence-specific primer (PCR- SSP) method. The proportion of male psoriasis patients engaging in the smoking and alcohol was much higher than that of the control group (P201 allele was present at significantly higher frequency in the patients with psoriasis (OR=4.25, P201 in male patients with psoriasis (OR>6.91, P4..

关键词： psoriasis HLA-DQA1*0201 allele smoking alcohol association

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NaAlSi_3._8-hollandite and other high-pressure minerals in the shock melt veins of the Suizhou meteorite

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Chinese Science Bulletin 2001年第13期46卷 1121-1126页

作者： XIE Xiande, CHEN Ming, WANG Deqiang & El Goresy A.1.guangzhou institute of geochemistry, Chinese {3. of{4., guangzhou 51064., China 2. Max-Planck-institute fur Chemie, 55128 Mainz, Germany guangzhou institute of geochemistry Chinese Academy of Sciences Guangzhou 510640 China Max-Planck-institute für Chemie 55128 Mainz Germany

The Suizhou L6 chondrite contains a few very thin shock melt veins of 0.02-0.09 mm in width. In spite of small width of the veins, shock-induced high-pressure phases, such as coarse-grained NaAlSi3.8-hollandite, ringwoodite, majorite and fine-grained matrix majorite-pyropess have been discovered in these veins. NaAlSi3.8-hollandite, the high-pressure phase of plagioclase, in Suizhou shock veins occurs as a single phase mineral, no silicate glassy phase, such as albitic glass, was incorporated with it. The presence of above-mentioned high-pressure phases constrains the high pressure (up to 23.24.GPa) and high temperature (up to 1900-2000℃) regime in Suizhou shock veins, and indicates that the duration of high-pressure regime in the veins should be long enough (a few seconds) for phase transformation and crystallization of minerals under pressure. The discovery of the first natural single-phase crystalline NaAlSi3.8- holland-ite in Suizhou meteorite is of important significance in understanding the Earth’

关键词： high NaAlSi3.8-hollandite and other high-pressure minerals in the shock melt veins of the Suizhou meteorite

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Stage characteristics for the development of late Quaternary paleosols in the Yangtze Delta area

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Chinese Science Bulletin 1999年第9期44卷 857-860页

作者： CHEN Qingqiang and LI CongxianLaboratory of Marine Geology , Tongji University , Shanghai 200092, China guangzhou institute of geochemistry , Chinese {3. of{4. , guangzhou 51064., China Laboratory of Marine Geology Tongji University Shanghai China guangzhou Institue of geochemistry Chinese Academy of Sciences Guangzhou China

The late Quaternary paleosols in the Yangtze Delta area developed in the period of 25 000—12 000 aBP. Phytolith ratios (value A) of contents of fan, square and rectangle types indicaring the warm and humid climate to those of bar, hat and point types indicating cold and dry climates decrease upwards overall on profiles of the paleosols, suggesting that the climates turned from warm and humid to cold and dry. So, the paleosols developed mainly during the regression before the last glacial maximum. Changes of value A indicate no trend of warming, suggesting that the transgression was rapid after the last glacial maximum. The development of the paleosols exhibited obvious stages, which were controlled remarkably by transgression and regression: Ⅰ. Period of alternation of deposition and pedogenesis, which was from the occurrence of regresson before the last glacial maximum to the time when sea levels fell close to the lowest;Ⅱ. Exposure period with continual pedogenesis, which was terminated when the

关键词： paleosol phytolith development processes late Quaternary Yangtze Delta.

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Geochemical constraints from hydrothermal fluid inclusions of altered deformation zone type Au(Ag)deposits in Yunkai area, South China

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Chinese Science Bulletin 1999年第S2期44卷 230-232页

作者： WANG Zuwei~1, ZHANG Haihua~2, YAO Dongliang~2 and ZHOU Yongzhang~3.1. Department of Geography, Tianjin Normal University, Tianjin 3.0071, China 2. guangzhou institute of {4., Chinese {3. of {4., guangzhou 51064., China 3. Department of Earth {4., Zhongshan University, guangzhou 510275, China eeszhou@*** Department of Geography Tianjin Normal University Tianjin 300071 China guangzhou institute of geochemistry Chinese Academy of Sciences Guangzhou 510640 China Department of Earth sciences Zhongshan University Guangzhou 510275 China

THE altered deformation zone type Au (Ag) deposits share an important part from the precious metallicore deposits in the Yunkai area, South China. Their formation is a history of poly-stage evolution. Pre- liminary source strata, Calidoniam metamorphism, Indosinian-Yanshanian ductile shear deformation andassociated hydrotheraml alteration all play certain roles in the history. This note discusses the geochemical conditional of the hydrothermal fluids during mineralization. Two representative ore deposits, the Pangxidong Ag(Au) deposit and Hetai Au deposits are selectedfor this study. They are hosted in altered ductile shear zones. Wall-rock hydrothermal alteration is bothspatially and temporally associated with the development of the ductile shear system. Silicification occurred throughout the whole alteration process. There are three groups of quartz: thepredeformational quartz, the early stage hydrothermal quartz, and the late stage hydrothermal quartz asso-

关键词： precious metallic deposit fluid inclusions mineralizing fluid South China.

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Experimental Wave Power Plant at the Pearl River Estuary

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China Ocean Engineering 1991年第4期6卷 493-498页

作者： Liang Xianguang, Gao Xiangfan, Zheng Wenjie Yu Zhi, Jiang Niandong, Hou Xiangqin and You Yage 1. Associate Professor, guangzhou institute of Energy Conversion, the Chinese academy of {3., guangzhou2. Senior Engineer, guangzhou institute of Energy Conversion, the Chinese academy of {3., guangzhou3. Assistant Researcher, guangzhou institute of Energy Conversion, the Chinese academy of {3., guangzhou4. Engineer, guangzhou institute of Energy Conversion, the Chinese academy of {3., guangzhou

The first Chinese experimental wave power plant, i. e., the shoremountcd experimental wave power plant at the Pearl River Estuary was successful in trial power generation on February 15, 1990. The plant is on the south shore of the Dawanshan Island in the Pearl River Estuary, facing the vast waving South China Sea. With a designed wave condition of H1/10= 1.5 m and T= 6.5 s, the planned installed capacity is 8 kW comprising the first unit of 3.kW brushless clawpole generator which delivers 110 V DC current and the second unit of 5 kW brushless single phase synchro AC generator which delivers 220 V AC current. At present, the first unit has been put into trial operation.

关键词： power plant estuary model test tide wave energy

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Primary migration and secondary alteration of the Upper Paleozoic gas reservoir in Ordos Basin,China―Application of fluid inclusion gases

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Science China Earth sciences 2008年第S1期51卷 165-173页

作者： GONG Se 1,2 ,PENG PingAn 1 ,SHUAI YanHua 3.,DAI JinXing 3.&ZHANG WenZheng 4.1 guangzhou institute of {4.,the Chinese {3. of {4.,guangzhou 51064.,China 2 Common Wealth Scientific and Research Organization,Petroleum Resources,PO Box 13.,North Ryde,New South Wales,1670,Australia 3.Research institute of Petroleum Exploration and Development,PetroChina,Beijing 100083.China 4.Research institute of Exploration and Development,Changqing Petroleum Corporation,Xi’an 710021,China guangzhou institute of geochemistry the Chinese Academy of Sciences Guangzhou 510640 China Common Wealth Scientific and Research Organization Petroleum Resources PO Box 136 North Ryde New South Wales 1670 Australia Research institute

The composition of fluid inclusions(FI)often represents the initial geochemical characteristics of palaeo-fluid in reservoir *** on composition and carbon isotopic composition of gas during primary migration,reservoir-forming and subsequent secondary alterations are discussed through comparing fluid inclusion gas with coal-formed gas and natural gas in present gas reservoirs in the Ordos *** results show that primary migration of gas has significant effect on the molecular but not on the carbon isotopic composition of *** and diffusion fractionation took place during the secondary migration of gas in Upper Paleozoic gas reservoir according to carbon isotopic composition of methane in *** and carbon isotopic composition of natural gas were nearly unchanged after the gas reservoir forming through comparing the FI gases with the natural gas in present gas reservoir.

关键词： secondary alteration fluid inclusion carbon isotope Ordos Basin

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Alkalic-type epithermal gold mineralization associated with Tongshi complex in Pinyi County, Shandong Province

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Chinese Science Bulletin 1999年第S2期44卷 236-238页

作者： XIONG Xiaolin, ZHAO Zhenhua and WANG Qiang guangzhou institute of geochemistry, Chinese {3. of{4., guangzhou 51064., China guangzhou institute of geochemistry Chinese Academy of Sciences Guangzhou 510640 China

THE alkali-rich subvolcanic complex of Tongshi and the associated gold mineralization are located at thesouth boundary of Pinyi Mesozoic volcanic depression in western Shandong Province. There are morethan 3. gold deposits and mineralization locations around the complex, in which Guilaizhuang gold deposit and Zhuojiazhuang bonanza gold deposit with important economic value are included. This area isbecoming a perspective target of superlarge gold deposit. In the mine area, there crop out Archeangranitic gneisses, Paleozoic carbonates and Jurassic clastic rocks, which was intruded by Tongshi complexwith 3. km. The complex consists of K-high igneous rocks formed by two stages of magmatism. In thefirst stage, the monzonitic dioritic porphyrys, which belong to K-high calc-alkalic rocks, were formed andin the second stage, monzonitic-syenitic porphyrys, which belong to K-high alkalic rocks, were *** Ar-Ar ages are 189 Ma and 188 Ma, respectively. At the end of the second stage, a lot of theexplosive breccias were formed. The gold mineralization in this area is closely associated in time andspace with the second stage monzonitic-syenitic porphyrys. Based on the characteristics of

关键词： epithermal gold mineralization Tongshi complex Pinyi County Shandong Province.

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Tectonic implications of the isotopic geochemical steep zone in eastern Yunnan, China

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Chinese Science Bulletin 1999年第S2期44卷 195-196页

作者： DONG Yunpeng, ZHU Bingquan and CHANG Xiangyang guangzhou institute of geochemistry, Chinese {3. of{4., guangzhou 51064., China guangzhou institute of geochemistry Chinese Academy of Sciences Guangzhou 510640 China

THE studies on geology, geochemistry and geophysics of mantle and crust show that there exist distinctvertical and lateral heterogenetics of the composition and structures of lithosphere. Especially, continentallithosphere possesses a complex rheological structure, which is one of the important factors controlling thedeformation and evolution of continent. Recently, the comprehensive studies in China and other countries suggest that the geochemical mapping and provincial division is a reliable method to reveal the heterogenetics, and Pb isotopic compositionhaving strong tectonic and regional characteristics. Therefore, Pb isotopic mapping is a key to revealingthe structure, formation and evolution of the lithosphere. Based on Pb isotopic mapping in South Chinacontinent, it has been revealed that there exists a Pb isotopic geochemical steep zone between Yangtzeblock and Cathaysia

关键词： tetonics isotopic steep zones Yunnan.

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Noble gas and cosmic-ray exposure age of Juancheng chondrite

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Chinese Science Bulletin 1999年第12期44卷 1142-1143页

作者： WANG Daode and WANG Ruitian guangzhou institute of geochemistry, Chinese {3. of{4. , guangzhou 51064., China Heze Bureau of Seismology, Shandong Province , Heze 274.26, China guangzhou institute of geochemistry Chinese Academy of Sciences Guangzhou China Heza Bureau of Seismology Shandong Province Heze China

The analytical results of noble gase in recently fallen Juancheng chondrite indicate that cosmic-ray ages of cosmogenic nuclei of 3.e, 21Ne and 3.Ar are 5.1, 5.0 and 5.8 Ma, respectively, averaging 5.3.Ma. The gas retention ages radiogenic nuclei of 4.e and 4.Ar are 3.00 and 4.200 Ma, respectively. The average cosmic-ray age shows that it has occurred at breakup of the meteoroid from its parent body by impact before 5.3.Ma.

关键词： noble gas cosmic-ray exposure age chondrite Juancheng Shandong.

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