地質(zhì)專業(yè)畢業(yè)設(shè)計(論文)外文翻譯-其他專業(yè)-資料下載頁
2025-01-19 08:37本頁面
【導(dǎo)讀】北東東向延伸的綠巖帶由超鎂鐵變質(zhì)火山巖組成，并且沿著中心地帶的。粗碎屑變質(zhì)沉積物和巖石分布。巖石單元發(fā)生強烈變形褶皺，同時形成區(qū)域性剝。褶皺向東西方向緩慢傾伏，總體方向與原始礦物的線理構(gòu)造相平行。韌性剪切帶、斷層和石英脈控制。礦化主要沿控礦巖漿的通道展部。助我們確定了控礦的隱伏構(gòu)造方向，這些方面不太直接明顯容易觀察。過提高線性趨勢中X-Y數(shù)據(jù)點。弗雷分析常常被用來確定礦床的空間關(guān)系。分析和開采報告）提取有效數(shù)據(jù)進(jìn)行分析。在現(xiàn)有的研究條件下，243個礦床實。這誤差是可以接受的，盡管你不能確切知道精確的坐標(biāo)位置（主礦井或。者坑道入口，第一坑道等）。這種分析方法常常被用在綠巖帶上各種礦床礦脈中。特征和區(qū)域線型模式等有可能被忽視，但在弗雷分析中，這些因素應(yīng)被重點考慮。韌性剪切帶金礦和受斷裂控制的礦床主要是呈北東——南西和北。方向，這與馬尼卡和穆塔雷綠巖帶附近的南北向?qū)Ρ让黠@。進(jìn)一步探討和研究。
【正文】 rtant in the Mutare area. The Odzi section is dominated by NESW directions for quartz vein deposits. The NWSE and NS directions controlling gold distribution have also been identified in other greenstone belts in the Zimbabwe Craton, ., the Mashava area (Blenkinsop, 1991). The above results are also found when the gold deposits are subdivided according to sulphide paragenesis, . arsenopyrite and bismutinitecrocoite show a dominant NESW alignment. The prominent directions (NWSE, NS and NESW) have been interpreted as the surface expression of deepseated crustal structures that channelled the mineralization fluids and control the distribution of gold deposits in the Zimbabwe Craton and in the MMO belt in particular. The question of whether the different 6 directions postulated by translation maps of different sulphides reflect different mineralization events or different phases of structural reactivation and remobilization of preexisting concentrations of gold and sulphides has not yet been fully covered. References： Blenkinsop, . (1991) Controls on Archaean gold mineralization in the Mashava area, Zimbabwe. Forster, H., Koeneman, EH. and Knittel, U. (1996) Regional frameworkfor gold deposits of the ManicaMutareOdzi greenstone belt,Zimbabwe Mozambique. Trans. Ins. Min. Metall., v. 105,pp. 60 73. （正文頁面不夠可加頁，并在正文后附外文原文，統(tǒng)一用 A4 紙張打印或手工謄寫）
試題試卷相關(guān)推薦
鄂ICP備17016276號-1