National Taiwan Ocean University Institutional Repository:Item 987654321/24767
English  |  正體中文  |  简体中文  |  全文笔数/总笔数 : 27287/39131
造访人次 : 2445633      在线人数 : 31
RC Version 4.0 © Powered By DSPACE, MIT. Enhanced by NTU Library IR team.
搜寻范围 进阶搜寻

jsp.display-item.identifier=請使用永久網址來引用或連結此文件: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/24767

题名: Hydrothermal alteration of andesite in acid solutions: Experimental study in 0.05 M H2SO4 solution at 110°C
作者: Fang J. N.;Lo H. J.;Song S. R.;Chung S. H.;Chen Y. L.;Lin I. C.;Yu B. S.;Chen H. F.;Li L. J.;Liu C. M
贡献者: NTOU:Institute of Applied Geosciences
國立臺灣海洋大學:應用地球科學研究所
关键词: Andesite;Acid hydrothermal alteration;Elemental mobility
日期: 2003
上传时间: 2011-10-20T08:17:37Z
出版者: Journal of the Chinese Chemical Society
摘要: abstract:Hydrothermal experiments on an andesite have been carried out under the condition of 110 °C, autogeneous pressure, 0.05 M H2SO4 solution and renewal of acid solution every 6 hours. The experimental results indicate thatthe plagioclase and pyroxenes in the treated samples show micropits and microfractures. Small crystals readily suffered from alteration, as compared with large ones, and the susceptibility of the minerals to the acid solution is decreased in the order of plagioclase, augite, hypersthene and opaque minerals. Plagioclase, which is the most reactive mineral in the experiments, shows an increase of SiO2, but a decrease of Al2O3, CaO and Na2O as the experiments proceeded. The chemical change ofthe treated andesite, it indicates that the relative amounts of SiO2, TiO2, MgO, ΣFeO, MnO and K2O increase, while those of Al2O3, CaO, Na2O and P2O5 decrease with an increase of the experimental duration. The relative mobility of chemical elements listed in decreasing order is P, Ca, Al, Na, Si, K, Mg, Fe, Mn and Ti in terms ofthe K value. It is no wonder that Ca, Al and Na are more mobile than others because these elements are readily released into solution from the more reactive plagioclase, while Mg, Fe etc. still stay in the less reactive pyroxenes and opaque minerals.
關聯: 50(2), pp.239-244
URI: http://ntour.ntou.edu.tw/handle/987654321/24767
显示于类别:[應用地球科學研究所] 期刊論文

文件中的档案:

档案 描述 大小格式浏览次数
index.html0KbHTML100检视/开启


在NTOUR中所有的数据项都受到原著作权保护.

 


著作權政策宣告: 本網站之內容為國立臺灣海洋大學所收錄之機構典藏,無償提供學術研究與公眾教育等公益性使用,請合理使用本網站之內容,以尊重著作權人之權益。
網站維護: 海大圖資處 圖書系統組
DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library IR team Copyright ©   - 回馈