本文選題：礦物化學(xué)　切入點(diǎn)：成因　出處：《成都理工大學(xué)》2017年碩士論文

【摘要】：位于華北克拉通北緣中段的康保紅旗營子雜巖,主要集中分布在康�？h城東南天津郭一帶,被康保—圍場斷裂和大同—沽源斷裂所圍限。主要巖性為矽線石榴黑云斜長片麻巖及其內(nèi)部包含的石榴花崗巖,并含有大理巖、石英脈等透鏡體。原康保紅旗營子雜巖被劃分為兩部分,分別為新太古代變質(zhì)深成巖和古元古代變質(zhì)侵入巖體。在本次調(diào)查中發(fā)現(xiàn)其實(shí)際為蘇計(jì)房表殼巖和小淖石榴花崗巖,其中蘇計(jì)房表殼巖主要為矽線石榴黑云斜長片麻巖,石榴花崗巖分布在天津郭、牛家營一線,即是原來所認(rèn)為的小淖片麻巖和天津郭片麻巖,調(diào)查中發(fā)現(xiàn)其僅發(fā)生變形,并未發(fā)生變質(zhì)作用。康�！獓鷪鰯嗔褞б员钡氖锸窕◢弾r主要分布十棚、后淖、蘆家營等地,其在晚古生代侵入時(shí)代較老的花崗巖體中。蘇計(jì)房表殼巖在研究區(qū)分布范圍較廣,分布在蘇計(jì)房、前阿明代、伊胡塞等地,作為主要巖性的矽線石榴黑云斜長片麻巖礦物組合為石英、長石、石榴石、黑云母、矽線石等,石榴石顆粒不等,裂隙發(fā)育,多呈集合體產(chǎn)出,在石榴石內(nèi)部大量出現(xiàn)針狀矽線石,在礦物附近存在柱狀矽線石,部分石榴石被交代呈孤島狀。石榴石中鐵鋁榴石、鎂鋁榴石占據(jù)絕對優(yōu)勢,在90%以上,屬于鐵鋁榴石—鎂鋁榴石系列,明顯富MgO、貧MnO,屬于變質(zhì)成因石榴石。小淖石榴花崗巖主要礦物組合包括石英、長石、黑云母、石榴石等,石榴石屬于鐵鋁榴石—鎂鋁榴石系列。石榴石在地域上表現(xiàn)為牛家營顆粒較粗,礦物定向性明顯,天津郭顆粒較細(xì),礦物無明顯的定向性,多呈集合體產(chǎn)出,集合體內(nèi)部可見石英、長石、黑云母等,大多具有裂紋,裂紋大多被黑云母或絹云母等充填;天津郭石榴石具有相對高的MgO、MnO含量以及低的FeO、Ca O含量,牛家營石榴石有相對低的MgO、MnO含量以及高的FeO、CaO含量。康保十棚石榴花崗巖礦物組合主要為石英、長石、白云母、石榴石等,部分白云母中還出現(xiàn)毛發(fā)狀矽線石,石榴石多為集合體,屬于鐵鋁榴石—錳鋁榴石系列,具有高的MgO含量,FeO含量變化不大,為巖漿成因石榴石。蘇計(jì)房表殼巖和小淖石榴花崗巖石榴石均屬于鐵鋁榴石—鎂鋁榴石系列,礦物化學(xué)成分相當(dāng),同時(shí)在成因上既有差異又有聯(lián)系,而兩者的寄主巖石在空間分布上緊密相鄰,推測應(yīng)是蘇計(jì)房表殼巖中石榴石發(fā)生部分熔融所造成的小淖兩個(gè)石榴花崗巖體中石榴石在成分上的略微不同,天津郭石榴石在深融過程中不徹底,保留殘留變質(zhì)石榴石特點(diǎn),巖漿成因表現(xiàn)不明顯;而牛家營石榴石則完全溶解沉淀,巖漿成因特點(diǎn)更加顯著。
[Abstract]:The Kangbao Hongqingzi complex located in the middle of the northern margin of the North China Craton is mainly distributed in the area of Tianjin Guo southeast of Kangbao County and is bounded by the Kangbao-Weichang fault and Datong-Guyuan fault.The main lithology is siliceous pomegranate black cloud plagioclase gneiss and its inner pomegranites which contain marble quartz veins and other lens bodies.The Kangbao Hongqiyingzi complex is divided into two parts, NeoArchean metamorphic deep-diagenetic rock and paleoproterozoic metamorphic intrusive rock mass.In this investigation, it was found that it was actually composed of Sujifang epidermal rock and Xiaonao garnet granite, among which the Sujiafang epidermal rocks were mainly siliceous pomegranate black cloud plagioclase gneiss, and the garnet granites were distributed in Tianjin Guo, Niujiaying line.That is, Xiaonao gneiss and Tianjin Guo gneiss, which only deformed and did not metamorphism.The Shipeng garnet granites north of the Kangbao-Weichang fault belt are mainly distributed in Shipeng, Hounao, Lujiaying and other places, which were found in the older granitic bodies of the late Paleozoic intrusions.The surface crust rocks of Sujifang are widely distributed in the study area. They are distributed in Sujifang, Pre-Amin Dynasty, Ihusai and other places. As the main lithology, the mineral assemblages of silicon-line, garnet, garnet, biotite and sillimanite are quartz, feldspar, garnet, biotite, sillimanite, etc.The garnet grain is unequal, the fissure is developed, and most of the garnets occur as aggregates. A large number of acicular sillimanites occur in the interior of garnets, columnar sillimanites are found in the vicinity of the minerals, and some garnets are replaced as isolated islands.Iron-aluminite and magnesia-garnet are the dominant garnet in garnet, which is above 90%. It belongs to the series of iron-aluminite and magnesium-garnet, which is rich in MgO and poor in MNO, so it belongs to metamorphic garnet.The main mineral assemblages of Xiaonao garnet granite include quartz, feldspar, biotite, garnet, etc.On the regional level, garnet is characterized by coarse Niujiaying particles, obvious mineral orientation, fine grain size of Tianjin Guo, no obvious orientability of minerals, most of them are produced by aggregates, quartz, feldspar and biotite are found in the interior of the aggregates, and most of them have cracks.The mineral assemblages of Kangbao Shipeng garnet granite are mainly quartz, feldspar, Muscovite, garnet and so on. Some Muscovite also appear hairlike sillimanite, most of which are aggregates, which belong to the series of iron and aluminium garnet, manganese and garnet.The content of Feo with high MgO content changes little and is magmatic garnet.Both Sujifang epidermal rocks and Xiaonao garnet granites belong to the Iron-Magnesia-Allogite series, with similar mineral chemical composition and genetic differences, and the host rocks are closely adjacent to each other in their spatial distribution.It is supposed that the composition of garnet in the two garnet granites in Xiaonao is slightly different due to the partial melting of garnet in Sujiaofang epidermal rock, and that the garnet in Tianjin Guo garnet is not thorough in the process of deep melting and retains the characteristics of residual metamorphic garnet.The origin of magma is not obvious, but Niujiaying garnet is completely dissolved and precipitated, and the characteristics of magma genesis are more obvious.
【學(xué)位授予單位】：成都理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：P574;P588

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 劉曉菲;袁順達(dá);雙燕;原埡斌;彌佳茹;軒一撒;;湖南金船塘錫鉍礦床石榴子石原位LA-ICP-MS稀土元素分析及其意義[J];巖石學(xué)報(bào);2014年01期

2 姚遠(yuǎn);陳駿;陸建軍;章榮清;趙令浩;;華南三類含鎢錫矽卡巖中石榴子石的成分、微量元素及紅外光譜[J];礦物學(xué)報(bào);2013年03期

3 張航妥;蘇根利;李和平;;上地幔溫壓條件下石榴子石中稀土元素的擴(kuò)散動(dòng)力學(xué)分異[J];礦物巖石地球化學(xué)通報(bào);2013年04期

4 焦淑娟;郭敬輝;彭松柏;;華南大容山-十萬大山花崗巖體中石榴石成因以及麻粒巖包體變質(zhì)作用研究[J];巖石學(xué)報(bào);2013年05期

5 喻磊;周新;李江力;何海林;;混合巖脈體中的石榴石及其地質(zhì)意義[J];科技資訊;2013年07期

6 高利娥;曾令森;石衛(wèi)剛;陳振宇;胡明月;孫東陽;;喜馬拉雅造山帶新生代花崗巖中兩類石榴石的地球化學(xué)特征及其在地殼深熔作用中的意義[J];巖石學(xué)報(bào);2012年09期

7 夏瓊霞;鄭永飛;;高壓-超高壓變質(zhì)巖石中石榴石的環(huán)帶和成因[J];巖石學(xué)報(bào);2011年02期

8 馬國璽;陳志寬;陳立景;馬曉鳳;馬金虎;提云生;竇玉峰;;木吉村銅(鉬)礦床地質(zhì)特征[J];礦床地質(zhì);2010年06期

9 任濤;鐘宏;張興春;朱維光;;浪都夕卡巖型銅礦床中石榴子石稀土元素地球化學(xué)研究[J];地學(xué)前緣;2010年02期

10 王金麗;張澤明;石超;;拉薩地體東南緣的多期深熔作用及動(dòng)力學(xué)[J];巖石學(xué)報(bào);2008年07期

相關(guān)博士學(xué)位論文 前1條

1 鐘長汀;華北克拉通北緣中段古元古代花崗巖類地球化學(xué)、年代學(xué)與構(gòu)造意義[D];中國地質(zhì)大學(xué)（北京）;2006年

相關(guān)碩士學(xué)位論文 前3條

1 田廣闊;東昆侖金水口石榴堇青花崗巖成因礦物學(xué)研究[D];中國地質(zhì)科學(xué)院;2016年

2 鄭坤;冀北康保石榴花崗巖成因及大地構(gòu)造意義[D];成都理工大學(xué);2016年

3 楊波;羌塘藍(lán)嶺地區(qū)石榴石白云母片巖變質(zhì)變形特征研究[D];中國地質(zhì)大學(xué)(北京);2015年

，

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