| 西藏多巴小区下古生界德吾卡下组岩石特征及时代讨论 |
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| 引用本文： | 郭安臣,王彦,祝爽,邵学君.西藏多巴小区下古生界德吾卡下组岩石特征及时代讨论[J].吉林地质,2013(4):18-19,30. |
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| 作者姓名： | 郭安臣 王彦 祝爽 邵学君 |
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| 作者单位： | [1]吉林省地质调查院,吉林长春130061 [2]吉林省区域地质矿产调查所,吉林长春130012 [3]吉林省第一地质调查所,吉林长春130033 |
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| 摘 要： | 笔者2012年在班戈西1/5万区域地质调查工作中,依据桑日PM5号剖面中岩石组合特征及笔石化石将原德吾卡下组划分为上下二段。下段主要为笔石粉砂岩相。上段主要为中层生物碎屑粉晶灰岩与灰绿、黄绿、黄褐色薄层粉砂岩互层。在下段笔石粉砂岩层位中获得的笔石化石,经鉴定种属为Monograptus sp,时代为早志留世。
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| 关 键 词： | 德吾卡下组 岩石特征 笔石 早志留世 |
Rock features and age discussion of Lower Paleozoic Dewuka lower Group in Duoba village of Tibet area |
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| GUO An-chen;WANG Yan;ZHU Shuang;SHAO Xue-jun.Rock features and age discussion of Lower Paleozoic Dewuka lower Group in Duoba village of Tibet area[J].Jilin Geology,2013(4):18-19,30. |
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| Authors: | GUO An-chen;WANG Yan;ZHU Shuang;SHAO Xue-jun |
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| Institution: | GUO An-chen;WANG Yan;ZHU Shuang;SHAO Xue-jun;Institute of Geological Survey of Jilin Province;Regional Geological and Mineral Resources Survey of Jilin Province;The First Geological Survey of Jilin Province; |
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| Abstract: | In 2012,the author worked in Bangor West 1：50000 regional geological survey,based on the rock combination features and graptolite fossils in the Sangri Profile PM5,divided original Dewuka lower Group into two sections.The hypomere is mainly graptolite silt sand facies.The upper is mainly middle bioclastic powder crystal limestone and celadon,olivine,tawny thin siltstone interbedded.The lower is mainly graptolite silt lithofacies.The graptolite fossils which obtained from lower graptolite siltstone layers,was identified species of Monograptus sp,Early Silurian. |
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| Keywords: | Dewuka lower Group rock features graptolite Early Silurian |
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