| 峡山湖沙坝的现代沉积 |
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| 引用本文： | 邱隆伟,周军良,姜在兴,王新征.峡山湖沙坝的现代沉积[J].海洋地质与第四纪地质,2009(4). |
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| 作者姓名： | 邱隆伟 周军良 姜在兴 王新征 |
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| 作者单位： | 中国石油大学（华东）地球资源与信息学院;中国地质大学（北京）能源学院;中国石化胜利油田分公司现河采油厂; |
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| 基金项目： | 国家重大专项(2008ZX05009-002);;山东省自然科学基金项目(Y2006E13) |
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| 摘 要： | 以现代沉积考察为基础,结合粒度分析资料,对湖泊中沙坝的沉积特征进行了详细的探讨。研究认为峡山湖沙坝微相分为坝前、坝主体、坝后3个沉积单元。坝前受湖浪作用明显,沉积物以湖浪作用形成的浪成沙和冲洗沙为主,发育滩脊和席状沙沉积体。坝主体沉积物以厚度较大、受湖水及风改造明显的中细沙为主,可进一步细分为坝-滩复合体和坝-沙丘复合体。坝后受坝主体阻隔,丰水期为局限湖湾沉积,枯水期发育沼泽沉积。湖泊中沙坝的形成是在滨浅湖环境中水动力和岸线、地貌等因素的影响下,受湖浪、湖流以及暴露环境下风的改造等共同作用的结果,湖浪所派生的沿岸流对沙坝的演化起着至关重要的作用;丰水期沙坝体接受湖水动力的改造,枯水期沙坝体接受风的改造。
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| 关 键 词： | 沙坝 沉积单元 沉积特征 成因 峡山湖 |
A RECENT SEDIMENTARY STUDY ON SAND BAR IN XIASHAN LAKE |
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| QIU Longwei,ZHOU Junliang,JIANG Zaixing,WANG Xinzheng.A RECENT SEDIMENTARY STUDY ON SAND BAR IN XIASHAN LAKE[J].Marine Geology & Quaternary Geology,2009(4). |
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| Authors: | QIU Longwei ZHOU Junliang JIANG Zaixing WANG Xinzheng |
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| Institution: | 1 Faculty of Geo-Resourse and Information;China University of Petroleum;Dongying 257061;China;2 School of Energy Resources;China University of Geosciences;Beijing 100083;3 Xianhe Oil Production Plant;Sinopec Shengli Oilfield Branch;Dongying 257068;China |
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| Abstract: | Based on recent sedimentary study,and combined with particle size analysis,this paper discussed the depositional features of sand bars in Xiashan Lake in detail.The study shows that as a sedimentary microface in lake,bar can be divided into three sedimentary units:bar front,bar main body and back bar.Bar front suffers waves obviously,whose sediment is mainly beach ridge and sheet sand made up of wave sand and swash sand.Bar main body is made by thicker fine to medium sand that was built or rebuilt by wave a... |
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| Keywords: | bar sedimentary units sedimentary features origin Xiashan Lake |
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