泌阳凹陷南部陡坡带砂砾岩体形成机制及分布规律
|
摘要
泌阳凹陷南部陡坡带砂砾岩体十分发育。研究认为,南部陡坡带砂砾岩体的形成受控于边界断裂、古地貌、古气候、基准面升降等因素。其中断裂的影响作用占主导地位,其活动强度决定了扇体规模的大小,转换带的位置控制了扇体的物源供给通道,从而进一步影响了古地貌特征,形成了"大沟对大扇、小沟对小扇"的沉积格局;古气候条件主要影响着物源区沉积物的供给;基准面的变化则主要控制着浊积砂体的发育。根据砂砾岩体的形成机制,总结出了其分布规律。
Glutenite abounds in the southern actic region of Biyang depression.Formation of glutenite is under the control of boundary faults,palaeogeomorphology,paleoclimate and deleveling.And,the boundary fault is dominant factor,and its activity determines the size of fans,the location of transform zone controls the supply routes of sources,and further,it affects the features of palaeogeomorphology.The sedimentary framework"a big fan on the big ditch,a small fan on the small ditch"is concluded.The paleoclimate mainly affects the sediment supply from the source area;The deleveling mainly controls the development of turbidite sandstone.According to the formation mechanism,the distribution rules of glutenite are come to conclusion.
Glutenite abounds in the southern actic region of Biyang depression.Formation of glutenite is under the control of boundary faults,palaeogeomorphology,paleoclimate and deleveling.And,the boundary fault is dominant factor,and its activity determines the size of fans,the location of transform zone controls the supply routes of sources,and further,it affects the features of palaeogeomorphology.The sedimentary framework"a big fan on the big ditch,a small fan on the small ditch"is concluded.The paleoclimate mainly affects the sediment supply from the source area;The deleveling mainly controls the development of turbidite sandstone.According to the formation mechanism,the distribution rules of glutenite are come to conclusion.
引文
[1]金振奎,林社卿等.泌阳凹陷核桃园组沉积相及储层控制因素研究[R].河南油田分公司勘探开发研究院, 2002.
[2]刘传虎,砂砾岩扇体发育特征及地震描述技术[J].石油物探,2001,40(1):64-72.
[3]邱荣华,李思田等.泌阳凹陷高精度层序地层学研究及岩性油气藏勘探[R].河南油田内部资料,2003.
[4]隋凤贵,林玉祥,刘雅利等.泌阳凹陷南部断裂带油气成藏条件研究及有利目标评价[R].2003.
[5]谢晓军,盛湘.泌阳凹陷油气展布及运移特征[J].天然气地球科学,2003.
[2]刘传虎,砂砾岩扇体发育特征及地震描述技术[J].石油物探,2001,40(1):64-72.
[3]邱荣华,李思田等.泌阳凹陷高精度层序地层学研究及岩性油气藏勘探[R].河南油田内部资料,2003.
[4]隋凤贵,林玉祥,刘雅利等.泌阳凹陷南部断裂带油气成藏条件研究及有利目标评价[R].2003.
[5]谢晓军,盛湘.泌阳凹陷油气展布及运移特征[J].天然气地球科学,2003.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心