| 晚三叠世—中侏罗世羌塘盆地的形成与演化 |
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| 引用本文： | 陈文西 王,剑.晚三叠世—中侏罗世羌塘盆地的形成与演化[J].中国地质,2009,36(3):682-693. |
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| 作者姓名： | 陈文西 王 剑 |
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| 作者单位： | 1. 中国地质科学院矿产资源研究所,北京,100037
2. 成都地质矿产研究所,四川,成都,610082 |
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| 基金项目： | 中央级公益性科研院所基本科研业务费专项资金项目 |
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| 摘 要： | 晚三叠世-侏罗纪是羌塘盆地大型海相沉积盆地形成时期,是研究羌塘盆地形成过程、判别盆地性质的重要时期.本文通过区域构造、盆地充填建造和岩相古地理分析,提出了该时期的羌塘盆地并非晚三叠世前陆盆地(或弧后盆地)和侏罗纪弧后盆地(前陆盆地),而是晚三叠世早期(肖茶卡期)的陆表海盆地和晚三叠世诺利期-中侏罗世巴柔期(那底岗日期-雀莫错期)的坳陷-裂陷盆.肖茶卡期内陆盆地主要受可可西里-金沙江活动带的控制,沉积期后出现的海退事件可能与冈瓦纳大陆与欧亚大陆的碰撞作用有关;那底岗日期-索瓦期羌塘盆地的强烈拉张断陷可能反映冈瓦纳大陆边缘的总体构造背景.
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| 关 键 词： | 晚三叠世-中侏罗世 残留内陆盆地 被动大陆边缘坳陷-裂陷盆 羌塘盆地 |
The formation and evolution of the Qiangtang Basin during the Late Triassic-Middle Jurassic period in northern Tibet |
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| CHEN Wen-Xi,WANG Jian.The formation and evolution of the Qiangtang Basin during the Late Triassic-Middle Jurassic period in northern Tibet[J].Chinese Geology,2009,36(3):682-693. |
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| Authors: | CHEN Wen-Xi WANG Jian |
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| Affiliation: | 1. Institute of Mineral Resources;Chinese Academy of Geological Sciences;Beijing 100037;Sichuan;China;2. Chengdu Institute of Geology and Mineral Resources;Chengdu 610082;China |
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| Abstract: | The major marine sedimentary facies basin formed during the Late Triassic and Middle Jurassic period is very important in studying the genetic process and type of Qiangtan Mesozoic basin. Based on lots of stratigraphic secting data, this paper made an analysis of regional tectonics, basin-filling sequences, lithofacies palaeogeography and thickness of the ore deposits formed during this period and, on such a basis, suggests that, instead of a foreland basin or a back-arc basin formed in Late Triassic and Ju... |
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| Keywords: | Late Triassic-Middle Jurassic epicontinental basin depression-rifting basin Qiangtang basin |
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