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Dynamic processes of ore-forming fluid and the localization of orebody: case study on the sediment-hosted gold deposits of southwestern Guizhou, china

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chinese Science Bulletin 1999年第S2期44卷 263-265页

作者： ZHANG Chengbo and ZHANG Zheru Institute of geochemistry, chinese academy of sciences, guiyang 550002,{3. Institute of geochemistry Chinese Academy of Sciences Guiyang 550002 China

1 Geological setting and occurrence features of the sediment-hosted gold deposits OVER 100 sediment-hosted gold deposits and occurrences of southwestern Guizhou lie near the sonthemedge of the Yangtze craton, which is composed of crystalline rocks of Proterozoic age, overlain mainly byPaleozoic and Lower to Middle Triassic shallow-marine platform and reef facies carbonates that gradesouthward and eastward into a thick section of interbedded siltstones and turbidite sandstones. Clasticdeposits were from the Yunkai Old Land and the Jiangnan Old Land respectively. The rocks were foldedand faulted during the Yanshanian orogeny, 190-65 Ma ago. Mineral deposits were mainly located inthe breccia horizon at the base of the Longtan Formation of Upper Permian, underlain by the massive graylimestone of Lower Permian with a karst unconformity, and the high-angle fault zones in the Triassicargillaceous limestone interlayered with shale, arkose, and fine-grained turbidite sandstone. No

关键词： sediment-hosted gold deposits fossil hydrothermal system mathematical model.

Oxygen isotopic (^(17)O-^(18)O) heterogeneity in Archaean continental nucleus, North china Craton

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chinese Science Bulletin 1999年第24期44卷 2267-2269页

作者： LIU Jianzhong, ZHANG Fuqin, LI Chunlai and WANG Shijie Institute of geochemistry , chinese academy of sciences , guiyang 550002 ,{3. Institute of Geophysics , chinese academy of sciences , Beijing 100101 ,{3. Institute of geochemistry Chinese Academy of Sciences Guiyang China Institute of Geophysics Chinese Academy of Sciences Beijing China

The oxygen isotopic data for amphibolites from Archaean continental nucleus, North china Craton indicate that ( i ) the evolving lines structured by the data are parallel to the geoselenic evolving line, which means that the parent materials of these continental nucleus o-riginated from solar matter; ( ii ) different intercepts for these evolving lines manifest that oxy-

关键词： North china Craton oxygen isotope (I7O-18O ) heterogeneity.

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邓小平新时期军队建设思想的伟大历史贡献

党的文献 2024年第4期 81-86页

作者： academy of Military sciences 中国人民解放军军事科学院

邓小平新时期军队建设思想,是新时期我们党领导筹划国防和军队现代化建设的根本依据和指导方针。邓小平科学判断战争与和平态势,实行国防和军队建设指导思想战略性转变,明确军队在国家大局中的定位与使命,探索和平时期军队建设新特点规... 详细信息

邓小平新时期军队建设思想,是新时期我们党领导筹划国防和军队现代化建设的根本依据和指导方针。邓小平科学判断战争与和平态势,实行国防和军队建设指导思想战略性转变,明确军队在国家大局中的定位与使命,探索和平时期军队建设新特点规律;调整积极防御的军事战略方针,将战略态势上的防御性同军事指导上的积极性统一起来,与时俱进创新军事战略指导;提出建设一支强大的现代化、正规化的革命军队总目标,指明人民军队建设发展的正确方向,为我军全面建设和长远发展提供行动纲领;坚定不移走中国特色精兵之路,科学处理军队建设中数量与质量的辩证关系,创新国防和军队建设发展模式。今天我们回顾和纪念邓小平的伟大军事贡献,关键是学习他在历史大转折时期领导筹划国防和军队现代化建设的新思路新方法,进而深入领会习近平主席在世界百年未有之大变局和中华民族伟大复兴战略全局交织激荡之际与时俱进带领全军进行的伟大理论创造和实践探索,坚定不移在习近平强军思想的科学指导下更加奋发有为地推进强军兴军事业。

关键词：邓小平新时期军队建设思想国防和军队现代化军事战略强军兴军

Temperature variations in the past 6000 years inferred from δ^(18)O of peat cellulose from Hongyuan,china

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chinese Science Bulletin 2002年第18期47卷 1578-1584页

作者： XU Hai, HONG Yetang, LIN Qinghua, HONG Bing, JIANG Hongbo & ZHU YongxuanInstitute of geochemistry, chinese academy of sciences, guiyang 550002,{3. Graduate School of chinese academy of sciences, Beijing 10003.,{3. Institute of geochemistry Chinese Academy of Sciences Guiyang China Graduate School of chinese academy of sciences Beijing China

Trends of the temperature variations recorded in δ18O in Hongyuan peat cellulose are similar to those recorded in δ18O of Jinchuan peat cellulose and in δ18O of Dunde ice core. Climate events have been identified to be globally homogeneous. Two notable climate transition periods have been detected in the past 6000 years, namely 4000 aBP with climate shifting from cold to warm and 1500 aBP with climate shifting from warm to relatively cold. Power spectrum analysis was performed to investigate the periodical signals in the δ18O time series. Typical periodicities of 1200-1087 a, 752 a, 444 a, 3.5 a, 213.a, 127-123.a, 88 a, 79 a were discovered, indicating an integrated influence on Hongyuan climate from solar, monsoon and ocean activities. Solar forcing has been addressed to be the main driving forcing of Hongyuan climate.

关键词： Hongyuan oxygen isotopic composition peat tempera-ture.

Gold occurrence mechanism of fine disseminated gold deposits

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chinese Science Bulletin 1999年第S2期44卷 18-20页

作者： WANG Xiaochun and ZHANG Zheru Institute of geochemistry, chinese academy of sciences, guiyang 550002,{3. Institute of geochemistry Chinese Academy of Sciences Guiyang 550002 China

THE fine disseminated gold deposits are widely distributed in the southwestern china and western UnitedStates. They have a mineral association of pyrite, arsenopyrite, marcasite, realgar, orpiment, stibnite,cinnabar, quartz, calcite and barite, and an element association of gold, arsenic, antimony, mercury,thallium and barium. Gold occurs as disseminated and in small size. This note aims to discuss the disseminated nature and micron size of the gold.

关键词： gold mechanism fine disseminated gold deposit.

Involvement of deep-source components in Sb mineralization on the southwestern margin of the Yangtze massif A discussion on its possibility

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chinese Science Bulletin 1999年第S2期44卷 50-52页

作者： PENG Jiantang and HU Ruizhong Institute of geochemistry, chinese academy of sciences, guiyang 550002,{3. Institute of geochemistry Chinese Academy of Sciences Guiyang 550002 China

1 Geology Extensively developed on the southwestern margin of the Yangtze massif are epithermal deposits suchas gold, silve r, antimony, mercury, arsenic, uranium, copper and lead-zinc ore deposits, as well asbarite, fluorite, iceland spar and rock crystal deposits, which constitute a unique low-temperature metallogenic domain. Except for the Gongguan deposit, the important Sb deposits in china are concentrated inthis low-temperature metallogenic domain, constituting the Hunan-Guizhou-Guangxi-Yunnan Sb ore *** general this ore belt extends in the NNE direction, measuring 1 900 km or more in length and 200 kmin width. A total of 505 Sb deposits (or occurrences) are known, accounting for 85.5 % of the

关键词： deep-source Sb mineralization Yangtze massif.

chinese expert consensus on the clinical application of drugcoated balloon(2^(nd) Edition)

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Journal of Geriatric Cardiology 2024年第2期21卷 135-152页

作者： The Expert Writing Committee of the chinese Expert Consensus on Clinical Applications of Drug-Coated Balloon(2^(nd)Edition) Jun-Bo GE Yun-Dai CHEN 不详 Zhongshan Hospital Fudan University chinese PLA General Hospital

Percutaneous coronary interventions have progressed through the era of plain balloon dilation, bare-metal stent insertion to drug-eluting stent treatment, which has significantly reduced the acute occlusion and restenosis rates of target vessels and improved patient prognosis, making drug-eluting stents the mainstream interventional treatment for coronary artery disease. In recent years, drug-coated balloons(DCBs) have become a new treatment strategy for coronary artery disease, and the drugs used in the coating and the coating technology have progressed in the past years. Without permanent implant, a DCB delivers antiproliferative drugs rapidly and uniformly into the vessel wall via the excipient during a single balloon dilation. Many evidence suggests that DCB angioplasty is an effective measure for dealing with in-stent restenosis and de novo lesions in small coronary *** more clinical studies are published, new evidence is emerging for the use of DCB angioplasty in a wide range of coronary diseases, and the indications are expanding internationally. Based on the latest research from china and elsewhere, the Expert Writing Committee of the chinese Expert Consensus on Clinical Applications of Drug-Coated Balloon has updated the previous DCB consensus after evidence-based discussions and meetings in terms of adequate preparation of in-stent restenosis lesions, expansion of the indications for coronary de novo lesions, and precise guidance of DCB treatment by intravascular imaging and functional evaluation.

关键词： balloon drugs dealing

SHRIMP zircon U-Pb geochronology of early Mesozoic felsic igneous rocks from the southern Lancangjiang and its tectonic implications

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Science china Earth sciences 2006年第10期49卷 1032-1042页

作者： PENG Touping1,2, WANG Yuejun1, FAN Weiming1, LIU Dunyi3. SHI Yuruo3.& MIAO Laicheng4 1. Key Laboratory of Isotope Geochronology and geochemistry, Guangzhou Institute of geochemistry, chinese academy of sciences, Guangzhou 510640,{3. 2. Graduate University of chinese academy of sciences, Beijing 10003.,{3. 3. SHRIMP isotope Laboratory, chinese academy of Geological sciences, Beijing 10003.,{3. 4. Institute of Geology and Geophysics, chinese academy of sciences, Beijing 100029,{3. Key Laboratory of Isotope Geochronology and geochemistry Guangzhou Institute of Geochemistry Chinese Academy of Sciences Guangzhou China Graduate University of chinese academy of sciences Beijing China SHRIMP isotope Laboratory Chinese Academy of Geological Sciences Beijing China Institute of Geology and Geophysics Chinese Academy of Sciences Beijing China

The SHRIMP zircon U-Pb geochronology of three typical samples, including two monzo nitic granites from the Lincang batholith and a rhyolite from the Manghuai Formation are presented in the southern Lancangjiang, western Yunnan Province. The analyses of zircons for the biotite monzonitic granites from the northern (02DX-13.) and southern (20JH-10) Lincang batholith show the single and tight clusters on the concordia, and yield the weighted mean 206Pb/23.U ages of 229.4 ± 3.0 Ma and 23..4 ± 3.6 Ma, respectively, representing the crystallized ages of these granites. The zircons for the rhyolitic sample (02DX-95) from the Manghuai Formation give a weighted mean 206Pb/23.U age of 23..0 ± 5.0 Ma. These data suggest that the igneous rocks from the Lincang granitic batholith and Manghuai Formation have a similar crystallized age. In combination with other data, it is inferred that both were generated at a narrow age span (~23. Ma) and were originated from the postcollisional tectonic regime. An early Proterozoic 206Pb/23.U apparent age of 1977±44 Ma is additionally obtained from one zircon from the biotite monzonitic granite (southern Lincang batholith), indicative of devel- opment of the early Proterozoic Yangtze basement in the region. These precisely geochronological data provide important constraints on better understanding the Paleozoic tectonic evolution of the Tethys, western Yunnan Province.

关键词： SHRIMP zircon U-Pb dating, Middle Triassic, Lincang granitic batholith, Manghuai Formation rhyolite, southern Lancangjiang.

Distribution characteristics of iodine in humic acid-high underground water in Inner Mongolia and their relations to IDD disease

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chinese Science Bulletin 1999年第S2期44卷 85-86页

作者： YU Xiaoying State Key Laboratory of Environmental geochemistry, Institute of geochemistry, chinese academy of sciences,{3., china State Key Laboratory of Environmental geochemistry Institute of Geochemistry Chinese Academy of Sciences Guiyang 550002 China

THE concentrations of iodine in humic acid-high underground water are not low, but the IDD disease isprevailing in some areas and no such disease is reported in some other areas. In order to explore the causes of disease and the factors affecting the concentrations of I in underground water, the author collected51 water samples from the Amengbayingmaodao Farm, Langshan Town, Linghe City of Bameng, ShibaTown of Wuyuan County, Qingshan Town of Wulatiehou Prefecture, and Zhijiliang Village in the suburbsof Hohhot City in the central and western part of Inner Mongolia for investigation. The analytical resultsshow that the water samples were relatively alkaline （pH=7.91 on average）. The average concentrationsof cations vary in the order of Na+>Ca2+> Mg2+>K+ while those of anions follow the decreasing

关键词： iodine humic acid distribution characteristics.