| 东准噶尔造山带泥盆系沉积相及古地理环境 |
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| 引用本文： | 李文铅,李长河,李亚萍.东准噶尔造山带泥盆系沉积相及古地理环境[J].新疆地质,1999(4). |
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| 作者姓名： | 李文铅 李长河 李亚萍 |
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| 作者单位： | 新疆地质矿产勘查开发局第一区域地质调查大队!新疆乌鲁木齐830011 |
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| 摘 要： | 东准噶尔造山带纸房地区自晚志留世—泥盆纪可划分为哈甫提克山、绵脊梁、色克森巴依、塔克札勒、博格达五个构造沉积区。各个构造沉积区的沉积盆地内有各自的沉积相特征 ,且反映不同的古地理环境。晚志留世—早泥盆世早期海域自西向东逐渐扩大 ,在其加里东期地体 (微地块 )外围形成近 EW向带状海槽 ,为滨海环境 ;早泥盆世晚期—中泥盆世形成全区域性海侵 ,从滨浅海—半深海环境均存在 ,以滨浅海为主 ;晚泥盆世为多岛洋的鼎盛时期 ,属有限洋盆。自北往南为海陆过渡环境—浅海环境—半深海环境
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| 关 键 词： | 东准噶尔 构造沉积区 沉积盆地 沉积相 多岛洋 古地理 |
SEDIMENTARY FACIES AND PALEOGEOGRAPHICAL ENVIRONMENT OF DEVONIAN IN EAST JUNGGAR OROGENIC BILT |
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| LI Wen qian,LI Chang he,LI Ya ping.SEDIMENTARY FACIES AND PALEOGEOGRAPHICAL ENVIRONMENT OF DEVONIAN IN EAST JUNGGAR OROGENIC BILT[J].Xinjiang Geology,1999(4). |
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| Authors: | LI Wen qian LI Chang he LI Ya ping |
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| Abstract: | Zhifang region of East Junggar oregenic belt can be divided into five tectonic sedimentary provinces,which are:Ertai,Kaokesaiergai,Beitashan,Kelamaili and Bogoda.Every sedimentary basin of them has their own sedimentary facies features which reflects different ancient geological environment :The marine domain gradually spreaded westward from Late Silurian to Early Devonian.Around the Caledonian land (micro block),there is a east west zoned trench took place in late stage of Early Devonian and mid Devenian.A region covered transgression littoral and shelf to bathyal environment existed.Both littoral and shelf environments were dominant.Late Devonian was a limited oceanic basin and a period of great prosperity of archipelagic ocean.From north to south,the paleogeographic environment.changed from sea land transitional facies to shelf facies to bathyal facies. |
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| Keywords: | East Junggar tectonic sedimentary province sedimentary basin sedimentary facies archipelagic ocean paleogeography |
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