金湖凹陷闵北地区阜一、二段火山岩地层划分与对比

根据火山岩的岩性、电性以及岩石化学等特征 ,将闵北地区阜一、二段火山岩地层划分为岩流单元、岩流组、亚旋回等不同的单元。以岩流组作为该区火山岩地层划分的基本单位 ,对该区火山岩地层进行了划分与对比。该区火山岩分布的规律是 :岩流组的厚度、数目由东向西呈衰减趋势 ,而在南北方向上则相对比较稳定 ;岩流组的厚度分布受断层活动的控制 ;岩流组的可对比性 ,南北方向略好于东西方向 ;火山岩岩体呈东厚西薄楔状分布的格局。

Stratigraphic classification and correlation of volcanic rock in first and second segments of Funing group in Jinhu sag

Based on the lithological characters of volcanic rock, electricity, petrochemistry of rock, the volcanic rock strata of the first and second segments of Funing Group in the northern area of Minqiao were divided into distinct units of lava cell, lava group and sub gyration. Taking lava group as an essential unit for compartmentalizing and contrasting volcanic rock stratum, the volcanic rock strata in this area were classified and correlated, and the distribution of volcanic rock in the area was determined. The thickness and amount of lava group assumed the trends of attenuation from east to west, but stable in the north south direction. The volcanic rock body assumed a thick wedge pattern in east and a thin pattern in west. The study results will be valuable for the advanced prospection and exploitation of the volcanic rock oil reservoir in this area.