准噶尔盆地白家海—五彩湾地区苍房沟群和小泉沟群层序地层学研究
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摘要
基于Vail为代表的层序地层学理论 ,引入了高分辨率层序地层学中的基准面和可容空间的概念 ,综合运用地质、测井和地震资料 ,对准噶尔盆地白家海五彩湾地区的层序地层进行了研究。将研究区的苍房沟群和小泉沟群划分为A ,B ,C ,D 4个层序 ,分别对应梧桐沟组、韭菜园子组、烧房沟组和小泉沟群。同时依据基准面升降旋回的概念 ,将每一个层序都划分为基准面的上升和下降旋回。综合考虑可容空间、沉积物供给以及两者的匹配关系 ,建立了 5种层序地层模式。研究结果表明 ,研究区的层序受基准面变化和沉积物供给所控制
On the basis of the basic principles of sequence stratigraphy, the concepts of base level and accommodation were introduced to research the sequence stratigraphy in Baijiahai and Wucaiwan areas of the Junggar Basin, by the use of the data of geology, logging and seismic. The Cangfanggou Group and Xiaoquangou Group were divided into four sequences that correspond respectively to Wutonggou formation, Jiucaiyuanzi formation, Shaofanggou formation, Xiaoquangou group. Each sequence was divided into the descending cycle and rising cycle of the base level. In consideration of accommodation, supply of sediments and mutual relationship of them, five kinds of sequence stratigraphy models were established. The analyses on the changes of the base level and the supply of sediments show that the development of the four sequences in these areas is controlled by the change of the base level and supply of sediments.
On the basis of the basic principles of sequence stratigraphy, the concepts of base level and accommodation were introduced to research the sequence stratigraphy in Baijiahai and Wucaiwan areas of the Junggar Basin, by the use of the data of geology, logging and seismic. The Cangfanggou Group and Xiaoquangou Group were divided into four sequences that correspond respectively to Wutonggou formation, Jiucaiyuanzi formation, Shaofanggou formation, Xiaoquangou group. Each sequence was divided into the descending cycle and rising cycle of the base level. In consideration of accommodation, supply of sediments and mutual relationship of them, five kinds of sequence stratigraphy models were established. The analyses on the changes of the base level and the supply of sediments show that the development of the four sequences in these areas is controlled by the change of the base level and supply of sediments.
引文
[1] 张满郎,等.准噶尔盆地彩参2井侏罗纪孢粉化石及层序地层分析[J].石油大学学报(自然科学版),2001,25(1):16-21.
[2] 张琴,朱筱敏,等.准噶尔盆地阜东斜坡侏罗系地震相研究[J].石油大学学报(自然科学版),2001,25(1):72-76.
[3] 纪友亮,张立强,等.沾化凹陷孤岛东部斜坡下第三系层序地层学[J].石油大学学报(自然科学版),1998,22(6):34-38.
[1] 邓宏文.美国层序地层研究中的新学派高分辨率层序地层学[J].石油与天然气地质,1995,16(2):89-97.
[2] 池英柳.可容纳空间概念在陆相断陷盆地层序分析中的应用[J].沉积学报,1998,16(4):8-13.
[2] 张琴,朱筱敏,等.准噶尔盆地阜东斜坡侏罗系地震相研究[J].石油大学学报(自然科学版),2001,25(1):72-76.
[3] 纪友亮,张立强,等.沾化凹陷孤岛东部斜坡下第三系层序地层学[J].石油大学学报(自然科学版),1998,22(6):34-38.
[1] 邓宏文.美国层序地层研究中的新学派高分辨率层序地层学[J].石油与天然气地质,1995,16(2):89-97.
[2] 池英柳.可容纳空间概念在陆相断陷盆地层序分析中的应用[J].沉积学报,1998,16(4):8-13.
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