| 东昆仑二叠纪单通道筵对判别冈瓦纳大陆北界的局限性 |
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| 引用本文： | 尹福光,潘桂棠,李兴振.东昆仑二叠纪单通道筵对判别冈瓦纳大陆北界的局限性[J].地层学杂志,2005,29(11):529-533. |
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| 作者姓名： | 尹福光 潘桂棠 李兴振 |
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| 作者单位： | 成都地质矿产研究所,四川成都610081 |
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| 基金项目： | 中国地质调查局“青藏高原1/25万区域地质填图综合研究”（编号：20031000056）及川渝滇黔发地区基础地质综合研究（编号;1212010310201）项目. |
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| 摘 要： | 东昆仑木孜塔格地区的赋存二叠纪单通道筵的岩石为浊流与喷溢流成因，也就是说为异地沉积，因而用单通道筵现在的位置来判别冈瓦纳大陆的北界就有其局限性，而且与其共生的生物组合中含有暖温型Misellina动物群，Misellina动物群属特提斯大区的华夏特提斯生物地理分区。上部原地的中厚层生物碎屑灰岩夹珊瑚礁灰岩中含有大量暖水型动物群，如Pseudoshwagerina、Misellina minor、Parafusulinaaustralis。因此把冈瓦纳北界移至木孜塔格一线的证据不够充分。
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| 关 键 词： | 东昆仑造山带 新疆 单通道筵 古环境 冈瓦纳大陆 二叠纪 |
| 收稿时间： | 07 23 2005 12:00AM |
| 修稿时间： | 09 28 2005 12:00AM |
THE LIMITATION OF THE PERMIAN Monodiexodina OF EASTERN KUNLUN UPON THE DETERMINATION OF THE NORTHERN BOUNDARY OF THE GONDWANA |
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| YIN Fu-guang, PAN Gui-tang, LI Xing-zhen.THE LIMITATION OF THE PERMIAN Monodiexodina OF EASTERN KUNLUN UPON THE DETERMINATION OF THE NORTHERN BOUNDARY OF THE GONDWANA[J].Journal of Stratigraphy,2005,29(11):529-533. |
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| Authors: | YIN Fu-guang PAN Gui-tang LI Xing-zhen |
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| Institution: | Chengdu Institute of Geology and Mineral Resources, Chengdu, 610081 |
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| Abstract: | The Permian Monodiexodina-bearing rocks in the Muzitage of eastern Kunlun Mountain are made up of turbidity current and outpouring, that is allochthonous deposit. Thus, using Monodiexodina to determine the northern boundary of the Gondwana. The associated biological combination includes warm-loving Misellina fauna, belonging to the Cathaysian-Tethys biogeographically subarea. The medium-thick-bedded bioclastic limestone intercalated with coral-reef limestone in the autochthonous upper part contains abundant warm-loving fauna including Pseudoschwagerina, Misellina minor, and Parafusulina australis. Therefore, there is no enough evidence to shift the northern boundary of the Gondwana to the Muzitage area. |
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