南阿爾金玉蘇普阿勒克塔格花崗質(zhì)復(fù)式巖體巖石成因與構(gòu)造地質(zhì)意義研究
[Abstract]:The Yussup Alektagic granitic complex is located in the southern margin of the Altun orogenic belt and is one of the largest granite bodies in the southern Altun. According to the field geological investigation, the rock mass was formed by stages of magma emplacement. The structure, structure and material composition of the two stages are obviously different, and there are a large number of dark inclusion bodies. This provides a good condition for us to study magmatic evolution and deep crust-mantle interaction, and also provides a possibility for us to study the relationship between Paleozoic magmatism and tectonic evolution in South Altun. However, no detailed research results have been published so far. Therefore, this paper chooses the complex rock mass as the research object, through the comparative study of the field geology, mineralogy, petrology, geochemistry and other characteristics of the complex rock mass, discusses the origin of the rock mass and the dynamic process of its formation. Combined with zircon U-Pb chronology and Lu-Hf isotopic composition, the age, material source and genetic type of the rock mass are determined. Finally, the tectonic and geological significance of the rock mass is discussed by synthesizing the division of the magmatic activity stages of the South Altun. The main body of the Yusupu Alektagg granitic complex is the medium coarse grained porphyry black cloud monzonitic granite, which is the result of the first magma emplacement. In the tectonic contact zone between the edge part of the rock mass and the strata, a small number of medium-fine granites containing porphyry granites, potash feldspar porphyry and dark inclusion are exposed, which is the result of the second stage of magma emplacement. The main element characteristics show that the Yushupu Alektage granite body is a high potassium calc-alkaline I-type granite. The first stage of the rock mass is relatively rich in iron and magnesium and is poor in silicon compared with the second stage of the rock mass. The characteristics of trace elements show that the first stage of rock mass is relatively depleted of high field strength elements compared with the second stage of rock mass, and it is rich in large ion lithophile elements. The characteristics of rare earth elements show that the complex rock mass is characterized by light rare earth enrichment, heavy rare earth depletion, right tilting distribution model and negative Eu anomaly. According to zircon LA-MC-ICP-MS U-Pb isotopic dating, the age of the first stage of the rock mass is (458.4 鹵4) Ma, and the age of the second stage of the rock mass is (418.2 鹵3.6) Ma, which indicates that the complex rock mass was formed in the early Paleozoic. The formation of the first stage of the rock mass is relatively early, which is the result of two magma emplacement stages. The Hf isotopic composition shows that the integral 蔚 _ (Hf) (t) value of the complex rock mass is positive, which indicates that the complex rock body originated from the partial melting of the new crust. The 蔚 _ (Hf) (t) value of the first stage granite body is higher than that of the first stage granite body, which indicates that the magmatic mixing degree of the first stage granite body is higher. Based on the above results, we believe that the southern Altun area has entered the late orogenic stage from 460Ma. The southern Altun ocean subducts northward and the collision weakens until 420Ma enters the postcollision equilibrium adjustment and extension stage. During this process, the subduction plate of the southern Altun oceanic crust was dehydrated, fluid metasomatic overlying the wedge mantle, and the mantle wedge partially melted to form Black Tortoise magma. The heat and fluid from the Black Tortoise magma partially melt the new crust and form a granitic magma chamber in the deep crust. The magma underwent magma mixing and magmatic differentiation, and then emplaced by stages, thus forming the Yusupu Alektagg granitic complex.
【學(xué)位授予單位】:長(zhǎng)安大學(xué)
【學(xué)位級(jí)別】:碩士
【學(xué)位授予年份】:2017
【分類號(hào)】:P588.1;P548
【相似文獻(xiàn)】
相關(guān)期刊論文 前10條
1 陳炯達(dá);;江蘇省燕山期幾個(gè)復(fù)式巖體的基本特征與含礦性[J];中國(guó)區(qū)域地質(zhì);1984年02期
2 李宏衛(wèi);婁峰;陳光明;邱列;唐煜坤;楊燕娜;許冠軍;;粵北貴東復(fù)式巖體的形成與重熔界面的形態(tài)演化[J];地學(xué)前緣;2011年01期
3 吳郭泉;;福州復(fù)式巖體的組成及其演化[J];巖石學(xué)報(bào);1991年02期
4 高劍峰;凌洪飛;沈渭洲;陸建軍;張敏;黃國(guó)龍;譚正中;;粵西連陽復(fù)式巖體的地球化學(xué)特征及其成因研究[J];巖石學(xué)報(bào);2005年06期
5 孔令廣,甘延景;魯西銅石中生代復(fù)式巖體巖石譜系單位劃分及成因[J];山東地質(zhì);2001年02期
6 李真;邱檢生;蔣少涌;徐夕生;胡建;;福建金山花崗質(zhì)復(fù)式巖體的元素和同位素地球化學(xué)及其成因研究[J];地質(zhì)學(xué)報(bào);2009年04期
7 吳家富;陳園平;汪鶴林;;內(nèi)蒙古察右中旗烏蘭巴山復(fù)式巖體的巖石學(xué)及地球化學(xué)特征[J];地質(zhì)調(diào)查與研究;2012年01期
8 姜平;福建省漳浦復(fù)式巖體譜系單位劃分及其地質(zhì)意義[J];吉林大學(xué)學(xué)報(bào)(地球科學(xué)版);2004年S1期
9 余達(dá)淦;周運(yùn)|>;劉光案;;對(duì)桃山、諸廣復(fù)式巖體(中段)成巖多序列性、演化多旋回性、成礦專屬性特征探討[J];華東地質(zhì)學(xué)院學(xué)報(bào);1987年04期
10 田澤瑾;陳振宇;王登紅;陳鄭輝;黃凡;趙正;侯可軍;;贛南桃山復(fù)式巖體的鋯石U-Pb年代學(xué)及其產(chǎn)鈾性探討[J];巖礦測(cè)試;2014年01期
相關(guān)會(huì)議論文 前10條
1 張德全;徐洪林;;安徽青九復(fù)式巖體的地質(zhì)學(xué)和地球化學(xué)[A];中國(guó)地質(zhì)科學(xué)院地質(zhì)研究所文集(29—30)[C];1997年
2 劉志強(qiáng);韓寶福;季建清;李宗懷;;新疆阿拉套山東部后碰撞花崗質(zhì)巖石的時(shí)代、地球化學(xué)性質(zhì)及其對(duì)陸殼垂向增長(zhǎng)的意義[A];中國(guó)礦物巖石地球化學(xué)學(xué)會(huì)第十屆學(xué)術(shù)年會(huì)論文集[C];2005年
3 金文山;;華北陸臺(tái)陰山-燕山地區(qū)太古代花崗質(zhì)巖多樣性的成因[A];中國(guó)地質(zhì)科學(xué)院天津地質(zhì)礦產(chǎn)研究所文集(20)[C];1989年
4 邱軍強(qiáng);強(qiáng)巴扎西;;藏東類烏齊地區(qū)漸新世國(guó)從格巖體特征及構(gòu)造環(huán)境[A];“資源保障 環(huán)境安全——地質(zhì)工作使命”華東六省一市地學(xué)科技論壇文集[C];2011年
5 劉波;;鄂西北上武當(dāng)群沉積特征及形成構(gòu)造環(huán)境[A];中國(guó)地質(zhì)科學(xué)院天津地質(zhì)礦產(chǎn)研究所文集(29)[C];1995年
6 滕吉文;;地震“孕育”、發(fā)生和發(fā)展的深部介貿(mào)和構(gòu)造環(huán)境的探討[A];中國(guó)科學(xué)院地質(zhì)與地球物理研究所2002學(xué)術(shù)論文摘要匯編[C];2002年
7 付建明;黃惠蘭;;湘南西山花崗質(zhì)復(fù)式巖體的地球化學(xué)特征[A];2004年全國(guó)巖石學(xué)與地球動(dòng)力學(xué)研討會(huì)論文摘要集[C];2004年
8 王鋒;劉池陽;趙紅格;楊興科;翁望飛;;賀蘭山西部的構(gòu)造反轉(zhuǎn)及中生代早中期鄂爾多斯地塊西北部構(gòu)造環(huán)境[A];鄂爾多斯盆地及鄰區(qū)中新生代演化動(dòng)力學(xué)和其資源環(huán)境效應(yīng)學(xué)術(shù)研討會(huì)論文摘要匯編[C];2005年
9 方愛民;李繼亮;劉小漢;侯泉林;Lee Ik Jong;肖文交;俞良軍;周輝;;新疆西昆侖庫地混雜帶中基性火山巖構(gòu)造環(huán)境分析[A];中國(guó)科學(xué)院地質(zhì)與地球物理研究所二○○三學(xué)術(shù)論文匯編·第二卷(青藏高原)[C];2003年
10 路遠(yuǎn)發(fā);;青海賽什塘-日龍溝成礦帶構(gòu)造環(huán)境的地球化學(xué)研究[A];中國(guó)地質(zhì)科學(xué)院宜昌地質(zhì)礦產(chǎn)研究所文集(14)[C];1989年
相關(guān)博士學(xué)位論文 前3條
1 陳沐龍;海南島千家復(fù)式巖體的成因及相關(guān)的鉬多金屬成礦研究[D];中國(guó)地質(zhì)大學(xué);2014年
2 周靜;浙西北早白堊世花崗質(zhì)巖石成因與構(gòu)造演化[D];浙江大學(xué);2016年
3 鄭培璽;冀東—遼西地區(qū)太古代花崗質(zhì)巖石成因與地殼演化[D];吉林大學(xué);2009年
相關(guān)碩士學(xué)位論文 前10條
1 高棟;南阿爾金玉蘇普阿勒克塔格花崗質(zhì)復(fù)式巖體巖石成因與構(gòu)造地質(zhì)意義研究[D];長(zhǎng)安大學(xué);2017年
2 李曉陽;甘肅西部馬鞍山復(fù)式巖體侵入期次遙感解譯與成礦分析[D];中國(guó)地質(zhì)大學(xué)(北京);2015年
3 劉巧峰;內(nèi)蒙古拐子湖溫圖高勒復(fù)式巖體地質(zhì)、地球化學(xué)特征及構(gòu)造意義[D];長(zhǎng)安大學(xué);2015年
4 劉仁燕;陜西柞水小茅嶺復(fù)式巖體年代學(xué)、地球化學(xué)及構(gòu)造意義研究[D];中國(guó)地質(zhì)科學(xué)院;2011年
5 劉鑫;新疆塔里木南緣葉城棋盤一帶古生代巖漿活動(dòng)及構(gòu)造意義[D];新疆大學(xué);2015年
6 孫如江;大興安嶺北部新林地區(qū)白堊紀(jì)花崗質(zhì)巖石的地球化學(xué)特征及成因研究[D];吉林大學(xué);2016年
7 盛肖寧;太行山中生代侵入巖地球化學(xué)特征及構(gòu)造環(huán)境[D];中國(guó)地質(zhì)大學(xué)(北京);2016年
8 邰寶強(qiáng);內(nèi)蒙古西烏旗白音郭勒地區(qū)晚古生代侵入巖時(shí)代及意義[D];中國(guó)地質(zhì)大學(xué)(北京);2016年
9 郝更強(qiáng);南祁連西段奧陶紀(jì)—志留紀(jì)山巖構(gòu)造環(huán)境研究及找礦意義[D];中國(guó)地質(zhì)大學(xué)(北京);2016年
10 袁永盛;桂東南永安巖體巖石地球化學(xué)特征及構(gòu)造環(huán)境[D];中國(guó)地質(zhì)大學(xué)(北京);2016年
,本文編號(hào):2406342
本文鏈接:http://sikaile.net/kejilunwen/diqiudizhi/2406342.html