准噶尔盆地滴南凸起二叠系、三叠系层序地层格架的建立
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摘要
通过区域地质背景分析、地震反射特征等识别出准噶尔盆地滴南凸起二叠系底面、三叠系顶面以及两系之间的分界面均为层序界面,且这3个界面均是区域性的岩性突变面.受其启示,对三叠系克拉玛依组和白碱滩组的分界面进行了分析,发现该界面同样为区域性的岩性界面,同时还是地层缺失面、地震强反射界面,判断其亦为层序界面.因此,本区二叠系、三叠系共划分为3个层序,在每个层序内部又进行了体系域的划分.
Based on the characters of seismic reflections and the analysis of geologic setting in the Dinan uplift in Junggar basin,three boundaries of sequence are recognized,i.e.the bottom of Permian,the top of Triassic and the boundary between Permian and Triassic.These boundaries are unexceptionally regional surfaces of abrupt change of lithology and well logging.Enlightened by this recognition,the boundary between Karamay and Baijiantan formations is analyzed.The result shows that this regional lithologic face also behaves as stratum absent face and strong seismic phase axis.Therefore it is a sequence boundary.Totally three sequences with seven system tracts are divided for the Permian and Triassic strata in the Dinan uplift.
Based on the characters of seismic reflections and the analysis of geologic setting in the Dinan uplift in Junggar basin,three boundaries of sequence are recognized,i.e.the bottom of Permian,the top of Triassic and the boundary between Permian and Triassic.These boundaries are unexceptionally regional surfaces of abrupt change of lithology and well logging.Enlightened by this recognition,the boundary between Karamay and Baijiantan formations is analyzed.The result shows that this regional lithologic face also behaves as stratum absent face and strong seismic phase axis.Therefore it is a sequence boundary.Totally three sequences with seven system tracts are divided for the Permian and Triassic strata in the Dinan uplift.
引文
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[2]赵玉光.准噶尔盆地西北缘二叠纪沉积岩相模式[J].新疆石油地质,1999,20(5):397—401.
[3]丘东洲.准噶尔盆地西北缘三叠-侏罗系隐蔽油气圈闭勘探[J].新疆石油地质,1994,15(1):1—9.
[4]康玉柱.新疆三大盆地构造特征及油气分布[J].地质力学学报,2003,9(1):82—94.
[5]李德江,杨俊生,朱筱敏.准噶尔盆地层序地层学研究[J].西安石油大学学报:自然科学版,2005,20(3):15—17.
[6]方世虎,贾承造,郭召杰,等.准噶尔盆地二叠纪盆地属性的再认识及其构造意义[J].地学前缘,2006,13(3):108—121.
[7]张满郎,张琴,朱筱敏,等.准噶尔盆地阜东斜坡区侏罗系层序地层学研究[J].古地理学报,2002,2(3):27—36.
[8]张冬玲,鲍志东,杨文秀.准噶尔盆地侏罗系层序地层格架的建立及主控因素分析[J].大庆石油学院学报,2005,29(2):10—12.
[9]贺振建,蒋光秀,贾凤华,等.济阳坳陷古近纪孢粉与层序地层[J].地层学杂志,2007,31(4):407—414.
[10]刘顺生,焦养泉,郎风江,等.准噶尔盆地西北缘露头区克拉玛依组沉积体系及演化序列分析[J].新疆石油地质,1999,20(6):485—489.
[11]Vail P R.Seismic stratigraphy interpretation using sequence stratigraphy.Part 1:Seismic stratigraphy interpretation procedure[A]//In:Bally A W,ed.Atlas of seismic stratigraphy.AAPG,Studies in Geology,1987,27:1—10.
[12]Walter W W,Jim Z W,Vail P R.Three components of sequencestratigraphy[A].Gulf Coast Association of Geological Societies,1992.
[13]顾家裕,张兴阳.陆相层序地层学进展与在油气勘探开发中的应用[J].石油与天然气地质,2004,25(5):485—490.
[14]操应长,姜在兴,夏斌.陆相断陷湖盆T-R层序的特点及其控制因素——以东营凹陷古近系沙河街组三段层序地层为例[J].地质科学,2004,39(1):111—122.
[15]董清水,刘招君,方石,等.论陆相层序地层学四分方案的可行性[J].沉积学报,2003,21(2):324—327.
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