摘要
共识别出平湖组5个三级层序界面T63、T53(Sb1)、T43(Sb2)、T23(Sb3)、T03(Sb4)和3个体系域界面f1、T33(f2)、f3。平湖组共有6个段,可划分出3个沉积旋回。平湖六段未见底,沉积旋回性不清,平湖五段为SⅢ1,平湖四段和三段组成SⅢ2,平湖二段和一段划分为SⅢ3。本区短周期(四级层序)海平面变化曲线的包络线(相当于三级层序)和全球海平面三级周期的变化曲线基本一致,反映全球海平面变化对本区层序发育有明显的影响。
We have totally recognized five 3rd sequence boundaries, that is, T3^6, T3^5 （Sb1）, T3^4 （Sb2）, T3^2 （Sb3） and T3^0 （Sb4） and three systems tract boundaries f1, T3^3 （f2） and f3. The Pinghu Formation has six sections, divided into three 3rd sequences. The Pinghu sixth section has not been seen to the bottom, and the depositional cycle are unclear. The Pinghu fifth section is SⅢ 1, Pinghu fourth and third sections compose SⅢ 2, and the Pinghu second and first sections are divided into SⅢ 3. The envelope curve（equal to 3rd sequence） of the short-cycle sea level（4th sequence）is basically consistent with the 3rd cycle curve of the global sea level changes, reflecting that the global sea level change has obvious influence on the sequence growth in this zone.
出处
《海洋地质与第四纪地质》
CAS
CSCD
北大核心
2007年第5期85-90,共6页
Marine Geology & Quaternary Geology
基金
中海石油(中国)有限公司上海分公司"东海西湖凹陷层序地层学和沉积体系研究"项目
关键词
平湖组
层序地层
划分
沉积旋回
西湖凹陷
sequence stratigraphy
division
depositional cycle
Pinghu Formation
Xihu sag
