| 珠江口盆地13.8Ma陆架边缘三角洲与陆坡深水扇的“源-汇”关系 |
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| 引用本文： | 祝彦贺,朱伟林,徐强,吴景富.珠江口盆地13.8Ma陆架边缘三角洲与陆坡深水扇的“源-汇”关系[J].中南大学学报(自然科学版),2011,42(12). |
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| 作者姓名： | 祝彦贺 朱伟林 徐强 吴景富 |
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| 作者单位： | 1. 中国海洋石油总公司中海油研究总院,北京,100027
2. 中海石油(中国)有限公司勘探部,北京,100010 |
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| 基金项目： | 国家重点基础研究发展计划(“973”计划)项目(2009CB219407) |
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| 摘 要： | 揭示南海北部被动大陆边缘盆地浅海陆架与深水陆坡之间的沉积响应关系,在等时地层格架内对陆架三角洲、上陆坡复合水道和陆坡重力流沉积进行综合分析.研究结果表明:相对海平面变化、陆架多级坡折演化、陆源碎屑供给强度以及陆架海洋水动力作用等四大因素控制着陆架-陆坡体系的发育；珠江口盆地中新统韩江组13.8 Ma形成的界面为三级层序界面,该时期低位域晚期发育陆架边缘三角洲,三角洲前缘带主体分布在白云凹陷北坡的陆架坡折处,随着物源供给,前缘带不断进积,陆架向陆坡方向生长,在多级坡折、坡度变化以及沉积物自身重力影响下,前缘带沉积物由牵引流搬运向重力流搬运转化,在陆坡复合水道搬运通道的作用下向白云凹陷深水区内再沉积,形成低位域晚期多坡度控制的滑塌体、碎屑流-浊流深水扇沉积,构成南海北部珠江口盆地特殊的陆架-陆坡“源-汇”响应系统;该沉积响应具有短暂性、突发性和连续性等特点.
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| 关 键 词： | 珠江口盆地 韩江组 陆架边缘三角洲 陆坡深水扇 "源-汇"响应关系 |
Sedimentary response to shelf-edge delta and slope deep-water fan in 13.8 Ma of Miocene epoch in Pearl River Mouth Basin |
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| ZHU Yan-he
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ZHU Wei-lin
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XU Qiang
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WU Jing-fu.Sedimentary response to shelf-edge delta and slope deep-water fan in 13.8 Ma of Miocene epoch in Pearl River Mouth Basin[J].Journal of Central South University:Science and Technology,2011,42(12). |
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| Authors: | ZHU Yan-he ZHU Wei-lin XU Qiang WU Jing-fu |
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| Affiliation: | ZHU Yan-he1,ZHU Wei-lin2,XU Qiang1,WU Jing-fu1 (1.China National Offshore Oil Corporation Research Institute,China National Offshore Oil Corporation,Beijing 100027,China,2.Exploration Department,China National Offshore Oil Corporation China Ltd.,Beijing 100010,China) |
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| Abstract: | To understand the relationship between shelf sedimentary system and slope sedimentary system in three order sequence stratigraphic framework of Miocene,the characteristics of shelf delta,slope complex channels and slope gravity flow deposit were studied.The results show that sea-level change,shelf break evolution,sediment supply and shelf marine hydrodynamics control the evolution of shelf and slope system.The SB13.8 Ma is a sequence boundary in Hanjiang formation of Miocene in Pearl River Mouth Basin,in LS... |
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| Keywords: | Pearl River Mouth Basin Hanjiang formation shelf-edge delta slope deep-water fan source to sink |
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