摘要
南海西南海区是近年来我局新开辟的地球物理调查区,该区水深较浅,沉积巨厚,已发现多个油气田,油气远景喜人。由于缺乏钻井资料验证,地震层序的地质年代尚有不同意见。本文从区域地质资料分析、国内外地震调查解释及少量钻井层位对比三个方面进行了综合分析,认为T_2反射界面相当于上新统和中新统分界,T_3反射波相当于上中新统和中中新统间界面,T_4反射波相当于中新统和渐新统间界面,T_5反射波相当上渐新统或渐新统底部界面,局部地区可能为中生界顶面。
This parper presents a synthetic seimic sequence analysis in the southwestern South China Sea based on regional geology, seismic-exploration and a few well imformations. It can be divided into five seismic sequence boumdaries in the seismic reflection profils. T, locates between Quaternary and Pliocene, T_2 equals to the boundary between Pliocene and Miocene, T_3 is the boundary beween upper-Miocene and mid-Miocene, T_4 is between Miocene and Oligocene, T_5 equals to the bottom boundary of the Upper Oligocene or Oligocene, and also may be the top of Mesozoic in parts.
出处
《南海地质研究》
1994年第6期16-29,共14页
Gresearch of Eological South China Sea
