摘要
以阳信洼陷下第三系火山层序为例,探讨了火山活动等事件对层序发育晚期可容空间产生与分布的影响.阳信洼陷下第三系火山层序发育的特征及湖退时期的可容空间变化特征表明,火山锥在断陷湖盆中的堆积使得盆地中可容空间演化特征与常见断陷湖盆不同,局部可容空间的分配出现非均一性特征.研究表明,火山锥体使湖退时期可容空间分布复杂化,是可容空间分布呈现非均一性的直接原因.进而丰富了层序地层学的内容.
The effects of the volcanic activities on the formation and the distribution of accommodation space among regressive system tracts of volcanic sequence are discussed with Eogene volcanic sequence in Xinyang Depression being taken as an example. The features of volcanic sequences and the patterns of the accommodation space in regressive system tracts show that, the local accommodation space of the fault-depression lake basin with volcanic cones is nonhomogeneous, which is different from common fault-depression lake basins. By studying sequence stratigraphy in Xinyang Depression, it is realized that the volcanic cones in regressive system tracts lead to the nonhomogeneous distribution of the accommodation space in this depression, which enriches the content of terrigenous sequence stratigraphy.
出处
《西安石油大学学报（自然科学版）》
CAS
2005年第5期5-8,共4页
Journal of Xi’an Shiyou University（Natural Science Edition）
基金
中石化
国家"十五"科技攻关项目<济阳坳陷古今系沉积体系与油气运聚机理研究>(p01013
2001BA605A09)成果
关键词
阳信洼陷
火山活动
层序
可容空间
非均一性
Xinyang Depression, volcanic activity
sequence
accommodation space
nonhomogeneity
