强制性海退沉积物与油气分布
|
摘要
强制性海退形成于相对海平面下降期间,对应于早期低位体系域的快速下降和缓慢下降以及晚期高位体系域的缓慢下降,引起沉积环境向海方向的迁移;当沉积物供应充足时,在斜坡边缘地区可以发育典型的进积斜坡沉积,表现在地震剖面中常为前积斜交反射结构。随滨岸线向海退却,在近岸一侧或浅海环境通常缺失低位体系域或陆架边缘体系域,强制性海退形成的砂体沉积往往离岸较远;缓慢下降期的晚期高位体系域也是强制海退的产物。强制性海退可以形成准层序边界和层序边界相一致的特殊现象,层序边界可以构成准层序边界的底界、顶界。
Forced regressive formats in the decline of relative sea level,corresponding to the early Lowstand systems tract and the late Highstand systems tract,causes the direction of sedimentary environment migrate to the sea.When the sediment supply is sufficient,the slope of the marginal areas can develop into typical plot slope sediments,in seismic common Progressive curved reflection structure.In the lowest position of the sequence is LST,with the coast shoreline retreat to the sea,in shallow coastal environments are often missing Lowstand systems tract or Shelf margin systems tract,Forced regressive sandstone is often far from offshore.Slow decline of the late Highstand systems tract is also a product of forced regression.
Forced regressive formats in the decline of relative sea level,corresponding to the early Lowstand systems tract and the late Highstand systems tract,causes the direction of sedimentary environment migrate to the sea.When the sediment supply is sufficient,the slope of the marginal areas can develop into typical plot slope sediments,in seismic common Progressive curved reflection structure.In the lowest position of the sequence is LST,with the coast shoreline retreat to the sea,in shallow coastal environments are often missing Lowstand systems tract or Shelf margin systems tract,Forced regressive sandstone is often far from offshore.Slow decline of the late Highstand systems tract is also a product of forced regression.
引文
[1]Van Wegoner T C,Mitchun R M,jr Compion K M et al.Siliclastic sequence stratigraphy in well lags,core,and out-crops:concepts for high-resolution correlation of time andfacies[J].AAPG Meth.Explor.Ser.7,1990,1-55.
[2]Haq B V,Hardenbol J,Vail P R.Mesozoic and Cenozoicchronostratigraphy and eustatic cycles[A].In:Wilgus CK,Hastigs BS,Posamentier H W et al.Sea-LevelChange:An Integrated Approach[C].SEPM Spec.Pub.,1988,42:71-108.
[3]Hunt D,Tucker M E.Stranded parasequence and forced re-gression wedge system tract:deposition during base-levelfall[J].Sedimentary Geology,1992,81:1-9.
[4]梅冥相,杨欣德强迫型海退及强迫型海退楔体系域———对传统Exxon层序地层学模式的修正[J].地质科技情报,2000,19(2).
[5]Posamentier HW,Allen G P,James D P et al.Forced re-gression in a sequence stratigraphic framwork:concepts,ex-ample,and exploration significance[J].Am.Ass.Petro.Geo.,1992,76(11):1687-1709.
[6]Tucher ME.Carbonate Sedimentology[M].London:Blackwell,1990.1-475.
[7]Galloway W E.Genetic stratigraphic sequence in basin anal-ysis I:architecture and genesis of flooding surface boundeddepositional unit[J].AAPG Bulletin,1989,73(2).
[8]梅冥相.碳酸盐旋回与层序[M].贵阳:贵州科技出版社,1995.1-245.
[9]梅冥相,马永生,周丕康等.碳酸盐沉积学导论[M].北京:地震出版社,1997.1-305.
[10]徐怀大,魏魁生,洪卫东,等译.层序地层学原理(海平面变化综合分析)[M].北京:石油工业出版社,1993.
[11]中国石油天然气总公司勘探局编.层序地层学原理及应用[M].北京:石油工业出版社,1998.57-58.
[12]殷鸿福,童金南.层序地层界面与年代地层界线的关系[J].科学通报,1995,40(6):539-541.
[13]朱筱敏.层序地层学[M].东营:中国石油大学出版社,2000.35-36.
[2]Haq B V,Hardenbol J,Vail P R.Mesozoic and Cenozoicchronostratigraphy and eustatic cycles[A].In:Wilgus CK,Hastigs BS,Posamentier H W et al.Sea-LevelChange:An Integrated Approach[C].SEPM Spec.Pub.,1988,42:71-108.
[3]Hunt D,Tucker M E.Stranded parasequence and forced re-gression wedge system tract:deposition during base-levelfall[J].Sedimentary Geology,1992,81:1-9.
[4]梅冥相,杨欣德强迫型海退及强迫型海退楔体系域———对传统Exxon层序地层学模式的修正[J].地质科技情报,2000,19(2).
[5]Posamentier HW,Allen G P,James D P et al.Forced re-gression in a sequence stratigraphic framwork:concepts,ex-ample,and exploration significance[J].Am.Ass.Petro.Geo.,1992,76(11):1687-1709.
[6]Tucher ME.Carbonate Sedimentology[M].London:Blackwell,1990.1-475.
[7]Galloway W E.Genetic stratigraphic sequence in basin anal-ysis I:architecture and genesis of flooding surface boundeddepositional unit[J].AAPG Bulletin,1989,73(2).
[8]梅冥相.碳酸盐旋回与层序[M].贵阳:贵州科技出版社,1995.1-245.
[9]梅冥相,马永生,周丕康等.碳酸盐沉积学导论[M].北京:地震出版社,1997.1-305.
[10]徐怀大,魏魁生,洪卫东,等译.层序地层学原理(海平面变化综合分析)[M].北京:石油工业出版社,1993.
[11]中国石油天然气总公司勘探局编.层序地层学原理及应用[M].北京:石油工业出版社,1998.57-58.
[12]殷鸿福,童金南.层序地层界面与年代地层界线的关系[J].科学通报,1995,40(6):539-541.
[13]朱筱敏.层序地层学[M].东营:中国石油大学出版社,2000.35-36.
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