發(fā)布時(shí)間：2018-06-23 03:33

  本文選題：輝鉬礦 + Re-Os同位素年齡�。� 參考：《地質(zhì)通報(bào)》2016年04期

【摘要】：采用輝鉬礦Re-Os同位素定年,獲得的內(nèi)蒙古阿巴嘎旗比魯甘干鉬礦的輝鉬礦Re-Os同位素模式年齡變化范圍為236.9±3.7~238.7±2.4Ma,年齡加權(quán)平均值為237.9±1.7Ma,表明該礦床形成時(shí)代應(yīng)為印支期。輝鉬礦的Re含量平均值為74.065×10~(-6),表明其主要為幔殼混合來(lái)源特征。該礦床位于賀根山斷裂帶以南的興蒙造山系索倫山-霍林郭勒弧盆系內(nèi),為斑巖型鉬礦床。鉬礦體主要賦存在黑云母花崗斑巖和角巖內(nèi),受內(nèi)外接觸帶控制。接觸帶控礦容礦斷裂主要有北西向、北東向及近東西向,其內(nèi)多充填有石英脈。細(xì)脈狀、網(wǎng)脈狀石英脈越發(fā)育,鉬礦化越強(qiáng)。區(qū)域研究表明,印支期是興蒙造山帶及其鄰區(qū)鉬(鎢)成礦的重要成礦期之一,但在本區(qū)尚屬首次發(fā)現(xiàn),為開(kāi)展索倫山-霍林郭勒成礦帶區(qū)域成礦規(guī)律研究提供了重要參考。
[Abstract]:According to Re-Os isotopic dating of molybdenum ore, the age range of molybdenum Re-Os isotopic model is 236.9 鹵3.7 鹵238.7 鹵2.4 Ma. and the weighted average age is 237.9 鹵1.7 Ma. it shows that the age of formation of the deposit is the Indosinian epoch. The average re content of molybdenum is 74.065 脳 10 ~ (-6), which indicates that the molybdenum is mainly derived from mixed mantle crust. The deposit is a porphyry type molybdenum deposit located in the Soolenshan-Huolingol arc basin of the Xingmeng orogenic system south of the Hegenshan fault zone. Molybdenum ore bodies mainly occur in biotite granitic porphyry and hornstone and are controlled by internal and external contact zone. The ore-bearing faults in the contact zone are mainly NW, NE and EW, and most of them are filled with quartz veins. The more veined and reticulated quartz veins develop, the stronger molybdenum mineralization occurs. Regional studies show that the Indosinian epoch is one of the important metallogenic periods for molybdenum (tungsten) mineralization in the Xingmeng orogenic belt and its adjacent areas, but it is the first time to find it in this area, which provides an important reference for the study of the regional metallogenic regularity of the Solenshan-Hollinggoole metallogenic belt.
【作者單位】： 中國(guó)地質(zhì)調(diào)查局天津地質(zhì)調(diào)查中心;中國(guó)地質(zhì)科學(xué)院國(guó)家地質(zhì)實(shí)驗(yàn)測(cè)試中心;內(nèi)蒙古自治區(qū)地質(zhì)調(diào)查院;中國(guó)地質(zhì)科學(xué)院研究生部;
【基金】：中國(guó)地質(zhì)調(diào)查局項(xiàng)目(編號(hào):1212010561510,1212010811061,1212011120330,12120114001201,1212010781028,1212011085488,121201006000150015) 國(guó)土資源公益性行業(yè)科研專項(xiàng)(編號(hào):200811010) 國(guó)家國(guó)際科技合作項(xiàng)目(編號(hào):2012DFB20220)
【分類號(hào)】：P618.65;P597.3

【相似文獻(xiàn)】

相關(guān)期刊論文 前10條

1 亢庚;聶愛(ài)國(guó);祝明金;田亞洲;雷傳富;譚代衛(wèi);;內(nèi)蒙古朝泥呼都格鉬礦床稀土元素地球化學(xué)特征[J];貴州大學(xué)學(xué)報(bào)(自然科學(xué)版);2010年05期

2 劉志敏;;營(yíng)口鲅魚圈望海寨鉬礦床地質(zhì)特征及礦床成因探討[J];有色礦冶;2005年06期

3 馬國(guó)祥;李長(zhǎng)華;于振清;楊志亮;;470鈾鉬礦床地質(zhì)特征及成因的初步探討[J];世界核地質(zhì)科學(xué);2009年02期

4 朱賴民;丁振舉;姚書振;張國(guó)偉;宋史剛;屈文俊;郭波;李r，

本文編號(hào)：2055571