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《青海国土经略》编辑部 《青海国土经略》2010,(5):1-1
<正>金秋送爽,丹桂飘香。党的十七届五中全会10月18日在北京胜利闭幕。全会审议通过了《中共中央关于制定国民经济和社会发展第十二个五年规划的建议》。《建议》站在历史的 相似文献
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<礼记·礼运>描绘了古代先贤们对理想社会的美好诉求:"老有所终,壮有所用,幼有所长,鳏寡孤独废疾者皆有所养."辽宁省国土资源厅161名党员干部努力实践党的宗旨,用实际行动"给无力者救助,让贫弱者生存!" 相似文献
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对图像判绘工作边描绘的规定给出了证明,并计算了各种比例尺航摄像片工作边描绘成直线或曲线的高差限制值. 相似文献
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在人们的印象中.他是个温文尔雅的一介书生。别看他才三十出头,可他成熟、稳健、敢想敢干.在天然色素这个行业里。他用一颗年轻火热的心.描绘出了一道绚丽的“彩虹”。他就是局劳动模范、优秀经理、二六五大队江西国亿生物科技有限公司总经理张军兵。 相似文献
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Geochemical Trace of Silicon Isotopes of Intrusions and Ore Veins Related to Alkali-rich Porphyry Deposits in Western Yunnan, China 总被引:1,自引:0,他引:1
LIU Xianfan YANG Zhengxi LIU Jiaduo WU Dechao ZHANG Chenjiang LI Youguo Chengdu University of Technology Chengdu Sichuan 《《地质学报》英文版》2004,78(2):459-462
Western Yunnan is the well-known polymetallic province in China. It is characterized by copper-gold mineralization related to Cenozoic alkali-rich porphyry. This paper analyzes the silicon isotope data obtained from four typical alkali-rich porphyry deposits based on the dynamic fractionation principle of silicon isotope. The study shows that the ore materials should originate mainly from alkali-rich magmas, together with silicon-rich mineralizing fluids. The process of mineralization was completed by auto-metasomatism, i.e. silicon-rich mineralizing fluids (including alkali-rich porphyry and wall-rock strata) replaced and altered the country rocks and contaminated with crustal rocks during the crystallization of alkali-rich magmas. Such a process is essentially the continuance of the metasomatism of mantle fluids in crust's mineralization. This provides important evidence of silicon isotopic geochemistry for better understanding the mineralization of the Cenozoic alkali-rich porphyry polymetallic deposi 相似文献