谢清惠,邓宏文
XIE Qinghui,DENG Hongwen

• 1:中国地质大学能源学院

摘要(Abstract)：

地层切片比时间切片、沿层切片更接近等时界面,能够提供更加真实的地质信息。以中新统刚果扇为例,在三级层序格架基础上内插得到一系列地层切片并提取了均方根属性,进而研究三级层序的沉积相展布、高频层序划分、水道发育期次及其充填结构、演化特征。研究结果表明:三级层序内部由多个具有相似沉积规律的高频沉积旋回构成;高频层序界面是沉积界面的组合,富砂的沉积组合面是高频层序界面的底,富泥的沉积组合面为高频层序界面的顶;水道复合体通常由多期次的一级水道构成,后期水道叠置在前期水道之上或不同程度地切割水道;水道演化主要经历初期侵蚀、侵蚀—充填、加积充填和废弃4个阶段,水道弯度逐渐变大。
Compared with the time slice and horizon slice,the strata slice is more much closer to the isochronic interface and can offer more real geological information.Taking Miocene Congo fan as an example,a series of strata slices are interpolated and RMS attributes are extracted on the basis of the 3rd-order sequence frame,and moreover the spread of the sedimentary facies,classification of the high-frequency sequences,period-time of the channel development,filling architecture and evolution characteristics for the frame are researched.The results show that the high-frequency sequence interface is the combination of the sedimentary interfaces,the interface enriched with the sands is the bottom of the high-frequency sequence interface,the interface composed of more mud is the top of the high-frequency sequence interface,the channel complex is made up of many period-times of the first-order channels,and the later channels always superpose on the older and cut them to different extents;the channel evolution mainly experiences following four stages:initial erosion,erosion-filling,stacking-filling and abandonment,' and the channel sinuosity is gradually increased.

关键词(KeyWords)： 地层切片;均方根属性;充填结构;沉积相;层序界面;深水水道
strata slicing/slice;RMS(root mean square) attribute;filling architecture;sedimentary facies;sequence surface;deep-water channel

Abstract:

Keywords:

基金项目(Foundation): “十二五”国家科技重大专项(2011ZX05030-003)

作者(Author): 谢清惠,邓宏文
XIE Qinghui,DENG Hongwen

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