| 华亭矿区延安组沉积环境分析 |
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| 引用本文： | 王德祖.华亭矿区延安组沉积环境分析[J].中国煤田地质,2005,17(5):22-24. |
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| 作者姓名： | 王德祖 |
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| 作者单位： | 甘肃煤田地质局146队,甘肃平凉744000 |
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| 摘 要： | 华亭矿区延安组形成于河流、湖泊三角洲-湖泊沉积体系,其中以湖泊三角洲平原占优势,其沉积相有河流相、冲积扇相、湖泊三角洲相、湖泊相.煤系沉积初期,以河流及冲积扇沉积为主,沉积中期则以湖泊三角洲沉积为主,晚期以湖泊环境为主,延安组各煤层大多是在湖泊三角洲平原上泥沼化形成的.
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| 关 键 词： | 延安组 沉积相 煤层成因 华亭矿区 沉积环境分析 华亭矿区 延安组 湖泊沉积体系 三角洲平原 冲积扇相 湖泊三角洲 三角洲沉积 河流相 |
| 文章编号： | 1004-9177（2005）05-0022-03 |
| 收稿时间： | 2005-05-08 |
| 修稿时间： | 2005年5月8日 |
Yanan Formation Depositional Environment Analysis in Huating Mining Area |
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| Wang Dezu.Yanan Formation Depositional Environment Analysis in Huating Mining Area[J].Coal Geology of China,2005,17(5):22-24. |
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| Authors: | Wang Dezu |
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| Institution: | No.146 Team, Gansu Bureau of Coal Geology, Pingliang, Gansu 744000 |
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| Abstract: | The Yanan Formation in Huating mining area was formed in fluvial, lake delta-lacustrine depositional system, and the lake delta plain is in the ascendant, and have sedimentary facies of fluvial, alluvial fan, lake delta and lacustrine. During the initial stage of coal measures deposition, was mainly alluvial fan deposit, middle stage lake delta deposit and later stage lacustrine deposit. Most coal seams in Yanan Formation were formed in peaty moors on lake delta plain. |
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| Keywords: | Huating mining area Yanan sedimentary facies coal seam genesis |
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