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| 澳大利亚北波拿巴盆地东北部侏罗纪古地貌及沉积相特征 | |
| 引用本文： | 吴嘉鹏,王英民,万丽芬,黄志超,周兴海,马哲.澳大利亚北波拿巴盆地东北部侏罗纪古地貌及沉积相特征[J].海相油气地质,2012,17(1):59-65. |
| 作者姓名： | 吴嘉鹏 王英民 万丽芬 黄志超 周兴海 马哲 |
| 作者单位： | 1. 中国石油大学(北京)地球科学学院;中国石油大学(北京)油气资源与探测国家重点实验室 2. 中国石化上海海洋油气分公司研究院 3. 中国石油辽河油田勘探开发研究院 |
| 摘 要： | 利用二维地震和钻井、测井资料探讨了北波拿巴盆地东北部侏罗纪各时期的古地貌和沉积相特征。整个侏罗纪时期,研究区整体处于裂陷作用的构造环境,发育由陆相至海相的5个三级层序。早侏罗世早期的古地貌主要受控于北西向构造格局,沉积中心主要是北西走向的凹陷和向斜。早侏罗世晚期开始,北东向构造开始发育,同时盆地整体剧烈沉降,北西和北东走向的构造单元发生切割和冲突,导致其内部的构造分区十分零碎。中侏罗世末期盆地北部发生大面积抬升形成Callovian不整合,之后的构造活动比较稳定,同时北东向构造基本形成,研究区进入缓慢拗陷时期。在此构造演化背景下,北波拿巴盆地东北部在早—中侏罗世主要是陆相的河流相和冲积扇沉积,中侏罗世主要是海陆过渡相的扇三角洲和三角洲沉积,而晚侏罗世则主要是浅海和滨岸沉积。 |
| 关 键 词： | 侏罗纪 构造演化 古地貌 沉积相 层序地层学 波拿巴盆地 澳大利亚 |
Jurassic Paleogeomorphology and Sedimentary Facies Characteristics in the Northeastern Part of North Bonaparte Basin |
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| Wu Jiapeng , Wang Yingmin , Wan Lifen , Huang Zhichao , Zhou Xinghai , Ma Zhe.Jurassic Paleogeomorphology and Sedimentary Facies Characteristics in the Northeastern Part of North Bonaparte Basin[J].Marine Origin Petroleum Geology,2012,17(1):59-65. | |
| Authors: | Wu Jiapeng Wang Yingmin Wan Lifen Huang Zhichao Zhou Xinghai Ma Zhe |
| Institution: | Wu Jiapeng,Wang Yingmin,Wan Lifen,Huang Zhichao,Zhou Xinghai,Ma Zhe |
| Abstract: | Based on the analysis of 2-D seismic,drilling and logging data,the tectonic environment was in rifting during the Jurassic period in the whole northeastern part of North Bonaparte Basin,Australia.Five 3rd-graded sequences have been identified from continental to marine environments in Jurassic sedimentary rocks.During the early stage of Early Jurassic epoch,the sedimentary center was mainly in the NW-trending sag and syncline under the control of NW-trending structures.During the late stage of Early Jurassic epoch,NE-trending structures began to develop and the whole basin was subsided rapidly,which resulted in the internal structures cut into fragmented areas since NW-trending units were collided with NE trending units.At the end of Middle Jurassic,the Callovian Unconformity developed and NW-trending structures formed as wide uplifting in the northern part of the basin,after which this region turned to be stable and entered into the phase of slow depression.Under this background of tectonic evolution,fluvial and alluvial fan facies mainly deposited during Early to Middle Jurassic epoch,transitional fan-delta and delta facies deposited during Middle Jurassic epoch,and neritic and littoral facies did during Late Jurassic epoch. |
| Keywords: | Jurassic Tectonic Evolution Paleogeomorphology Sedimentary facies Sequence stratigraphy Bonaparte Basin |
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