| 贵州顶苏二叠系晒瓦组基本序列及时代探讨 |
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| 引用本文： | 曾昭光,杨恩林.贵州顶苏二叠系晒瓦组基本序列及时代探讨[J].云南地质,2014(4):466-470. |
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| 作者姓名： | 曾昭光 杨恩林 |
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| 作者单位： | 贵州省地矿局117地质大队,贵州贵阳550018 |
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| 摘 要： | 顶苏地区晒瓦组以灰色、深灰色薄—中厚层泥质岩屑粉砂岩为主,基本层序由细砂岩—粉砂岩—粘土岩组成,向上粒径变细,层理变薄.在顶苏—小革么—带晒瓦组底发育砾岩层,为晚二叠世沿中二叠统侵蚀面上发育的一套河流相碎屑岩沉积.砾岩层之下灰岩中产牙形石Neogondolella granti Barskov et koroleva,同时根据晒瓦组假整合于峨眉山玄武岩之上,因此晒瓦组为晚二叠世产物.
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| 关 键 词： | 晒瓦组基本层序 形成时代 贵州镇宁 |
A PROBE INTO THE BASIC SEQUENCE AND AGE OF P SHAIWA FORMATION IN DINGSU,GUIZHOU |
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| ZENG Zhao-guang,YANG En-lin.A PROBE INTO THE BASIC SEQUENCE AND AGE OF P SHAIWA FORMATION IN DINGSU,GUIZHOU[J].Yunnan Geology,2014(4):466-470. |
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| Authors: | ZENG Zhao-guang YANG En-lin |
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| Institution: | ( Geological Team 117, Guizhou Bureau of Geology ＆ Mineral Resources, Guiyang 550018 ) |
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| Abstract: | The main rock of Shaiwa Formation in Dingsu is grey, dark grey thin, mid-thick bedded muddy lithic sihstone, the basic sequence fine sandstone-siltstone-claystone, finer grain and thinner bedding upwards. In Dingsu-Xiaogeme area, there is the bottom conglomerate of Shaiwa Formation, which is Late P river facies clasticrock developed on Middle P erosion surface. There is Neogondolella granti Barskov et koroleva in the limestone un- der the conglomerate. And Shaiwa Formation is disconformable on Emeishan Basalt. Therefore, Shaiwa Formation must be Late P Sediment. |
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| Keywords: | Basic Sequence of Shaiwa Formation Formation Age Zhenning Guizhou |
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