本文關(guān)鍵詞： 巖石組合 時代歸屬 紅旗營子群 崇禮 冀北　出處：《成都理工大學》2015年碩士論文　論文類型：學位論文

【摘要】：冀北崇禮紅旗營子群位于崇禮—赤城斷裂帶北側(cè),主要分布于崇禮縣的紅旗營、圓帽山、王帽山、西雙臺及五道營子一帶,總體呈近東西向帶狀分布,主要巖石類型為(石榴)黑云(角閃)斜長片麻巖、(石榴)斜長角閃巖、(透輝石)大理巖及榴英巖,其中主要巖石(地層)單元為(石榴)黑云(角閃)斜長片麻巖及(石榴)斜長角閃巖,兩者多呈互層狀產(chǎn)出,局部表現(xiàn)為后者呈透鏡體產(chǎn)出于前者中,(透輝石)大理巖及榴英巖呈透鏡狀、團塊狀或似層狀產(chǎn)出于(石榴)黑云(角閃)斜長片麻巖中。(石榴)黑云(角閃)斜長片麻巖的原巖為沉積巖及火成巖,且以沉積巖為主;(石榴)斜長角閃巖的原巖為基性火山巖;(透輝石)大理巖的原巖可能為形成于被動大陸邊緣由淺海沉積環(huán)境向陸表海環(huán)境過渡環(huán)境的海相灰?guī)r,形成環(huán)境具有較強的氧化性;榴英巖的原巖可能為沉積巖中的雜砂巖,根據(jù)石榴黑云斜長片麻巖與石榴斜長角閃巖中石榴石的成分剖面可知,二者經(jīng)歷了相似的變形特征,因此推測崇禮地區(qū)紅旗營子群中的石榴黑云斜長片麻巖與石榴斜長角閃巖均為原來的地層,后期一起經(jīng)歷了變形變質(zhì)作用,因此崇禮紅旗營子群應(yīng)為一套火山—沉積巖系。鋯石SHRIMP U-Pb年代學研究表明,冀北崇禮紅旗營子群的物質(zhì)來源較為復(fù)雜,其碎屑鋯石的年齡值范圍介于343.4Ma~2057Ma之間,原巖的沉積年齡不會早于343.4Ma,其沉積—變質(zhì)年齡介于326Ma~343.4Ma之間,在后期經(jīng)歷了6期次的構(gòu)造熱事件,對應(yīng)的變質(zhì)年齡分別為326±Ma、281±Ma、268±Ma、250±Ma、243±Ma及234±Ma。冀北崇禮紅旗營子群為一套晚古生代的火山—沉積巖系,后期經(jīng)歷了多期次的構(gòu)造熱事件。其中發(fā)生于326±Ma、281±Ma、268±Ma、250±Ma的構(gòu)造熱事件與華北地塊北緣早石炭世晚期—中二疊世及二疊紀末—三疊紀巖漿活動具有一定對應(yīng)關(guān)系,因此本文認為冀北崇禮紅旗營子群的相關(guān)構(gòu)造熱事件可能與古亞洲洋向南俯沖至華北地塊、華北地塊與西伯利亞南緣蒙古增生褶皺帶的拼合造山及巖石圈的拆沉作用有關(guān);古亞洲洋的閉合、華北地塊與西伯利亞南緣蒙古增生褶皺帶的拼合在二疊紀末—三疊紀初期已完成,因此研究區(qū)后期的240±Ma及234±Ma構(gòu)造熱事件可能與太平洋板塊相關(guān)活動及華北克拉通的板內(nèi)活動有關(guān)。同時,根據(jù)研究區(qū)所有巖石類型都記錄了268±Ma的構(gòu)造熱事件變質(zhì)年齡,因此推測崇禮地區(qū)紅旗營子群在268±Ma發(fā)生的變質(zhì)事件的程度最為強烈。
[Abstract]:Located on the north side of Chongli-Chicheng fault zone in northern Hebei Province, the Hongqi Yingzi group is mainly distributed in Hongqi camp, Yuanmaoshan, Wangmaoshan, Xishuangtai and Wudaoyingzi area of Chongli County. The main rock types are (pomegranate) black cloud (hornblende) plagioclase gneiss (pomegranate) amphibolite (diopside) marble and eclogite. The main rock (stratigraphic) units are (pomegranate) black cloud (hornblende) oblique gneiss and (pomegranate) oblique amphibolite, both of which are interbedded and partly appear as lens in the former. (diopside) marble and eclogite are lenticular. The primary rocks of the massive or stratiform gneiss in the (pomegranate) black cloud (hornblende) plagitic gneiss are sedimentary rocks and igneous rocks, and are mainly sedimentary rocks. (pomegranate) the primary rock of amphibolite is basic volcanic rock; (diopside) the original rock of marble may be marine limestone formed in the passive continental margin from shallow sea sedimentary environment to surface sea environment, and the forming environment has strong oxidizing property. The source rocks of eclogite may be complex sandstone in sedimentary rocks. According to the composition profiles of garnet in garnet black cloud plagioclase gneiss and pomegranate amphibolite, they have experienced similar deformation characteristics. Therefore, it is inferred that the pomegranate black cloud plagiocline gneiss and pomegranate amphibolite in Hongyingzi group in Chongli area are original strata, and have undergone deformation and metamorphism together in the late stage. Therefore, the Chongli Hongqi Yingzi group should be a set of volcanic-sedimentary rock series. The zircon SHRIMP U-Pb chronological study shows that the material source of the Chongli Hongqi-Yingzi group in northern Hebei is more complex. The age range of the detrital zircon is between 343.4 Ma and 2057 Ma, and the sedimentary age of the protolith is no earlier than 343.4 Ma. The sedimentation-metamorphic age is between 326 Ma and 343.4 Ma, and it has experienced six tectonic thermal events in the later stage, corresponding to 326 鹵Ma-281 鹵Ma metamorphic age. 268 鹵Ma 250 鹵Ma 243 鹵Ma and 234 鹵Ma.The Chongli Hongqiyingzi group in northern Hebei is a late Paleozoic volcanic-sedimentary rock series. There were many tectonic thermal events in the late stage, of which 326 鹵Ma-281 鹵Ma-268 鹵Ma. The tectonic heat event of 250 鹵Ma is related to the late early Carboniferous to the Middle Permian and the late Permian to Triassic magma activity in the northern margin of the North China block. Therefore, this paper suggests that the related tectonic thermal events of the Chongli Hongqiying sub-group in northern Hebei may be related to the subduction of the paleo-Asian ocean to the North China block. The North China block is related to the assemblage orogeny of the Mongolia accretive fold belt in the southern Siberian margin and the desubsidence of the lithosphere. The closure of the Paleo-Asian Ocean and the assemblage of the North China block and the Mongolian accretive fold belt on the southern edge of Siberia were completed at the end of Permian to the early Triassic. Therefore, the tectonic thermal events of 240 鹵Ma and 234 鹵Ma in the later stage of the study area may be related to the activities related to the Pacific plate and the intraplate activities of the North China Craton. According to all the rock types in the study area, the metamorphic ages of 268 鹵Ma tectonic thermal events have been recorded, so it is inferred that the extent of metamorphic events in the Hongyingzi group of Chongli area at 268 鹵Ma is the strongest.
【學位授予單位】：成都理工大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：P587

【參考文獻】

中國期刊全文數(shù)據(jù)庫 前10條

1 倪志耀,莫懷毅;四川冕寧前寒武紀變質(zhì)沉積巖的地球化學及其時代[J];北京大學學報(自然科學版);1998年06期

2 高長林;陜西南嶺碳酸鹽巖的稀土元素特征及其古海洋學意義[J];地球化學;1992年04期

3 錢會文，，李立寶，高勱，邱小平;華北陸臺高壓麻粒巖－榴閃巖韌性剪切帶[J];地球?qū)W報;1996年01期

4 K.Secher ,L.M.Larsen ,劉鐵庚;西格陵蘭南部薩法爾托克碳酸鹽巖雜巖體的地質(zhì)學和礦物學[J];地質(zhì)地球化學;1982年10期

5 楊興蓮;朱茂炎;趙元龍;張俊明;郭慶軍;皮道會;;黔東震旦系—下寒武統(tǒng)黑色巖系稀土元素地球化學特征[J];地質(zhì)論評;2008年01期

6 劉瑤;倪志耀;孔旭;盧俊生;張靜;劉胤;;冀北赤城紅旗營子雜巖的地質(zhì)特征及意義[J];成都理工大學學報(自然科學版);2015年03期

7 周作俠;;侵入巖的鎂鐵云母化學成分特征及其地質(zhì)意義[J];巖石學報;1988年03期

8 郭敬輝;翟明國;張毅剛;李永剛;閻月華;張雯華;;懷安蔓菁溝早前寒武紀高壓麻粒巖混雜巖帶地質(zhì)特征、巖石學和同位素年代學[J];巖石學報;1993年04期

9 毛德寶,陳志宏,鐘長汀,左義成,石森,胡小蝶;冀北北岔溝門地區(qū)中生代侵入巖地質(zhì)年代學和地球化學特征研究[J];巖石學報;2003年04期

10 朱永峰,Massonne H J;磷灰石中磁黃鐵礦出溶結(jié)構(gòu)的發(fā)現(xiàn)[J];巖石學報;2005年02期

中國碩士學位論文全文數(shù)據(jù)庫 前1條

1 孔旭;冀北赤城紅旗營子雜巖年代學研究[D];成都理工大學;2012年

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