| 米钵山组复理石中的内潮汐沉积 |
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| 引用本文： | 丁海军,孟祥化,葛铭.米钵山组复理石中的内潮汐沉积[J].安徽地质,2008,18(4):241-247. |
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| 作者姓名： | 丁海军 孟祥化 葛铭 |
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| 作者单位： | 中国地质大学(北京)沉积盆地研究所,北京,100083 |
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| 基金项目： | 国家自然科学基金
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| 摘 要： | 贺兰拗拉谷米钵山组复理石由具有递变层理、双向交错层理、单向交错层理、复杂多向交错层理、飘逸层理和波痕构造的韵律性砂岩、粉砂岩、泥岩薄互层组成。根据双向沉积构造等典型物性特征识别出5种内潮汐沉积微相，即飘逸层理砂泥岩韵律性薄互层微相，单向交错层和交错纹理砂岩粉砂岩微相，双向交错纹理和羽状交错纹理砂岩粉砂岩微相。结果表明：研究区复理石为深水牵引流（内波、内潮汐）、重力流以及原地沉积复合成因；经典的鲍玛序列是有待商榷的；重力流与牵引流存在流态转化。
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| 关 键 词： | 深水牵引流沉积 内潮汐沉积 沉积微相 复理石 重力流 |
INTERNAL TIDE AND INTERNAL WAVE DEPOSITES IN FLYSCH OF MIBOSHAN FORMATION |
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| DING Hai-jun,MENG Xiang-hua,GE Ming.INTERNAL TIDE AND INTERNAL WAVE DEPOSITES IN FLYSCH OF MIBOSHAN FORMATION[J].Geology of Anhui,2008,18(4):241-247. |
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| Authors: | DING Hai-jun MENG Xiang-hua GE Ming |
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| Institution: | DING Hai-jun,MENG Xiang-hua,GE Ming(Institute of Sedimentary Basin,China University of Geosciences,Beijing 100083) |
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| Abstract: | The Miboshan Formation flysch of Helan aulacogen mainly consists of rhythmically thin layers of gray fined sandstones,silt sands and dark gray mudstones in which the typical graded bedding,elegant beddings,cross bedding,pinnated cross bedding,bimodal cross bedding,rhythmic stratification and ripple mark are well developed.Abundance trace fossils are found in the flysch.Three internal tide depositional microfacies are recognized and studied in the flysch,they are rhythmically thin layers of fine sandstones,m... |
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| Keywords: | deep water traction current deposits internal tide deposits sedimentary microfacies flysch gravity current |
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