| 松辽盆地南部青山口组湖相风暴沉积 |
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| 引用本文： | 孙钰,钟建华,姜在兴,饶孟余.松辽盆地南部青山口组湖相风暴沉积[J].煤田地质与勘探,2006,34(1):12-16. |
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| 作者姓名： | 孙钰 钟建华 姜在兴 饶孟余 |
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| 作者单位： | 1. 中国石油大学地球资源与信息学院,山东,东营,257061
2. 中国地质大学,北京,100083 |
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| 摘 要： | 用岩心观察、粒度分析、薄片鉴定等方法,研究了松辽盆地南部青山口组湖相风暴沉积。结果表明,本区风暴沉积具有:a.丘状交错层理、冲刷面、渠模、截切构造、泄水构造及生物扰动成因等沉积构造;b.以跳跃总体为主、悬浮总体不发育的粒度特征;c.典型的“似鲍玛序列”。风暴沉积物源来自于西部斜坡区的(扇)三角洲及滨浅湖滩坝沉积,按其沉积特征及与物源的关系,又可进一步分为原地风暴岩和异地风暴岩。
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| 关 键 词： | 风暴岩 沉积特征 沉积序列 青山口组 松辽盆地南部 |
| 文章编号： | 1001-1986（2006）01-0012-04 |
| 收稿时间： | 2005-04-03 |
| 修稿时间： | 2005-04-03 |
Lacustrine storm deposits of Qingshankou Formation in southern Songliao Basin |
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| SUN Yu,ZHONG Jian-hua,JIANG Zai-xing,RAO Meng-yu.Lacustrine storm deposits of Qingshankou Formation in southern Songliao Basin[J].Coal Geology & Exploration,2006,34(1):12-16. |
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| Authors: | SUN Yu ZHONG Jian-hua JIANG Zai-xing RAO Meng-yu |
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| Institution: | 1. College of Earth Resource and Information, China University of Petroleum, Dongying 257061, China ; 2. China University of Geoscience , Beijing 100083, China |
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| Abstract: | On the basis of core observation,grain analysis and thin section studies,the lacustrine storm deposits in Qingshankou Formation in southern Songliao Basin are studied.The main types of storm deposits characteristics are identified,including hummocky cross-stratification,surface of scour,gutter cast,truncated structure,water-escape structure,bioturbation etc.Grain analysis indicates that saltation population is central yet suspension population is minor in storm deposits.Similar Bouma sequence is abstracted from the storm deposits of Qingshankou Formation.There are two provenances for storm deposits in this area,in which one comes from(fan) delta,and the other comes from beach and bar of shallow lake.Based on sedimentary features and transported instance,storm deposits are divided into autochthonous tempestites and allochthonous tempestites. |
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| Keywords: | tempestites depositional feature depositional sequence Qingshankou Formation southern Songliao Basin |
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