金礦開采外文翻譯-閱讀頁(yè)
2025-06-05 15:07本頁(yè)面
【正文】 。濁積巖建造、區(qū)域性地?zé)岙惓：团涮讛嗔严到y(tǒng)是成礦最重要的條件。砂質(zhì)單元底部常見(jiàn)溝模、槽模等構(gòu)造 。砂巖多為雜砂巖，分選差，磨圓度低 。以上事實(shí)表明，廣泛分布于礦區(qū)的細(xì)碎屑巖建造是一套形成于深海環(huán)境的濁積巖建造。粉砂巖 ，變化系數(shù) 400%。眾所周知， Au是一種變價(jià)元素，具有與 S,O,C,H,As 等許多元素結(jié)合成簡(jiǎn)單或復(fù)雜絡(luò) 合物的能力，在地球化學(xué)行為上，既有親硫性和親鐵性，又有親碳性。濁積巖中普遍含有機(jī)碳的成分，在沉積過(guò)程中碳對(duì)金等元素有吸附作用，這必然使金等元素成為濁積巖中的特定或固有組分并導(dǎo)致原始富集，因而往往成為地質(zhì)歷史上的含金建造。 溫度是使金由穩(wěn)定狀態(tài)轉(zhuǎn)化為活動(dòng)狀態(tài)的重要因素。微細(xì)粒浸染型金礦的成礦，需要一 定的熱動(dòng)力條件，以驅(qū)動(dòng)礦源層中的成 礦物質(zhì)運(yùn)移成礦 l4l。 巖漿活動(dòng) :區(qū)內(nèi)石英脈十分發(fā)育，東部出露印支燕山期花崗巖，它們?cè)谇秩牒蟮南喈?dāng)長(zhǎng)的時(shí)間內(nèi)所產(chǎn)生的熱效應(yīng)，必然導(dǎo)致一定范圍內(nèi)熱異常的出現(xiàn)。 構(gòu)造作用 :大場(chǎng)金礦區(qū)大地構(gòu)造環(huán)境上位于北巴顏喀拉印支期造山帶，北臨阿尼瑪卿 晚古生代一早中生帶縫合帶，自印支晚期后，本區(qū)長(zhǎng)期處于強(qiáng)擠壓狀態(tài)。區(qū)域高的熱流值是擠壓造山帶的重要特征。含礦斷裂為瑪多一甘德深大斷裂旁側(cè)的與深大斷裂基本呈平行分布的次級(jí)斷裂，礦化主要富集于斷裂構(gòu)造性質(zhì)由壓扭性轉(zhuǎn)化為張性擴(kuò)張部位。旁側(cè)次級(jí)壓扭性斷裂，能造成良好的屏蔽條件和半封閉環(huán)境，溫度、壓力下降緩慢，有利于交代作用的充分進(jìn)行和高硫低氧型礦質(zhì)的形成，在張性空間礦體定位。印支晚期開始的強(qiáng)烈構(gòu)造運(yùn)動(dòng)所造成的圍壓環(huán)境下的構(gòu)造巖漿活動(dòng)，導(dǎo)致了廣泛的熱效應(yīng)和 擴(kuò)容空間效應(yīng)，為金的活化、轉(zhuǎn)移、聚集創(chuàng)造了有利條件。 The latter39。 207 pb / 204 pb, , with a mean of 。 Contain pyrite, galena, quartz vein of the peacock petrochemical Pb a Pb method measured metallogenic age of 187 ma, belong to the early yanshan, visible its metallogenic epoch is the early stage of yanshan movement in the late indosinian orogeny and area. The above information shows that big gold mine of oreforming elements, sulfur and gangue ponents mainly es from stratum, the oreforming solution for atmospheric precipitation formation of deep groundwater. Turbidite fracture system construction, regional geothermal anomaly and matching is the most important metallogenic conditions. Two metallogenic conditions turbidite built for large formation of gold deposit provides a source of oreforming materials. Big gold deposit mainly occurs in the Triassic BaYanKaLa mountains SLATE clip in sandstone formation, mainly posed of fine clastic sedimentary formation, thickness is a huge black rhythmic rock series, with typical BaoMa sequence characteristics, characterized by: the rhythm of plete layer from the bottom of the coarse sand (gravel) mass unit leaf silty unit leaf argillaceous unit, generally contain a small amount of carbon and pyrite。 Development of microwave bedding。 Powder sandstone layer in the development of ocean shell characteristics of double hull (Halobia) and trace fossils plateau roaming trace fossils ((Plno litesm ontanus), typical deepwater turbidite facies characteristics. The above facts show that widely distributed in the mining area of fine clastic rock formation is a set of turbidite rock formed in the deep sea environment construction. The strata rock microelement statistical results as follows: cataclastic rock gold up to 5 x109, variation coefficient of 210%。 SLATE 9. 46 x109, variation coefficient 450%, beyond the eart
畢業(yè)設(shè)計(jì)相關(guān)推薦
鄂ICP備17016276號(hào)-1