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  1. Book ; Online: Geochemistry on Yangla copper deposit, China, supplementary data to: Yang, Xi-An; Liu, Jia-Jun; Cao, Ye; Han, Si-Yu; Gao, Bing-Yu; Wang, Huan; Liu, Yue-Dong (2012): Geochemistry and S, Pb isotope of the Yangla copper deposit, western Yunnan, China: Implication for ore genesis. (PDI-1839), Lithos, submitted

    Yang, Xi-An / Cao, Ye / Gao, Bing-Yu / Han, Si-Yu / Liu, Jia-Jun / Liu, Yue-Dong / Wang, Huan

    2012  

    Abstract: The Yangla copper deposit, situated in the middle section of Jinshajiang tectonic belt between Zhongza-Zhongdian block and Changdu-Simao block, is a representative and giant copper deposit that has been discovered in Jinshajiang-Lancangjiang-Nujiang ... ...

    Abstract The Yangla copper deposit, situated in the middle section of Jinshajiang tectonic belt between Zhongza-Zhongdian block and Changdu-Simao block, is a representative and giant copper deposit that has been discovered in Jinshajiang-Lancangjiang-Nujiang region in recent years. There are coupled relationship between Yangla granodiorite and copper mineralization in the Yangla copper deposit. Five molybdenite samples yielded a well-constrained 187Re-187Os isochron age of 233.3±3 Ma, the metallogenesis is therefore slightly younger than the crystallization age of the granodiorite. S, Pb isotopic compositions of the Yangla copper deposit indicate that the ore-forming materials were derived from the mixture of upper crust and mantle, also with the magmatic contributions. In the late Early Permian, the Jinshajiang Oceanic plate was subducted to the west, resulting in the formation of a series of gently dipping thrust faults in the Jinshajiang tectonic belt, meanwhile, accompanied magmatic activities. In the early Late Triassic, which was a time of transition from collision-related compression to extension in the Jinshajiang tectonic belt, the thrust faults were tensional; it would have been a favorable environment for forming ore fluids. The ascending magma provided a channel for the ore-forming fluid from the mantle wedge. After the magma arrived at the base of the early-stage Yangla granodiorite, the platy granodiorite at the base of the body would have shielded the late-stage magma from the fluid. The magma would have cooled slowly, and some of the ore-forming fluid in the magma would have entered the gently dipping thrust faults near the Yangla granodiorite, resulting in mineralization.
    Language English
    Dates of publication 2012-9999
    Size Online-Ressource
    Publisher PANGAEA - Data Publisher for Earth & Environmental Science
    Publishing place Bremen/Bremerhaven
    Document type Book ; Online
    DOI 10.1594/PANGAEA.778977
    Database Library catalogue of the German National Library of Science and Technology (TIB), Hannover

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  2. Article: The extension methods and decision-making analysis on the planting structure of slope farmland in Northern Shaanxi

    Li Yang, Xi’an University of Architecture and Technology, Xi’an (China), School of Management / Yang Maosheng, Xi’an University of Architecture and Technology, Xi’an (China), School of Management

    Agricultural Science and Technology

    Oct. 2010  , Issue (5)

    Abstract: Based on the resent research about the planting structure of slope farmland in northern Shaanxi, in order to increase the native’s income, we use the theory of the extension methods to analyze the planting structure of slope farmland, so that we can get ... ...

    Abstract Based on the resent research about the planting structure of slope farmland in northern Shaanxi, in order to increase the native’s income, we use the theory of the extension methods to analyze the planting structure of slope farmland, so that we can get the extensive strategy, and put them into use for planting of slope farmland to make the native’s income higher.
    Keywords SHAANXI ; SLOPING LAND ; FARMLAND ; DECISION MAKING ; SHAANXI ; TERRE EN PENTE ; TERRE AGRICOLE ; PRISE DE DECISION ; SHAANXI ; TERRENO EN DECLIVE ; TIERRAS AGRICOLAS ; TOMA DE DECISIONES ; http://www.fao.org/aos/agrovoc#c_7036 ; http://www.fao.org/aos/agrovoc#c_7109 ; http://www.fao.org/aos/agrovoc#c_2808 ; http://www.fao.org/aos/agrovoc#c_2147
    Language zho
    Document type Article
    ISSN 1009-4229
    Database AGRIS - International Information System for the Agricultural Sciences and Technology

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