准噶尔盆地玛湖凹陷下二叠统风城组含碱层段韵律特征及成因*
余宽宏1, 操应长1, 邱隆伟1, 孙沛沛1, 杨勇强1, 曲长胜1, 万敏2

Characteristics of alkaline layer cycles and origin of the Lower Permian Fengcheng Formation in Mahu sag,Junggar Basin
Yu Kuanhong1, Cao Yingchang1, Qiu Longwei1, Sun Peipei1, Yang Yongqiang1, Qu Changsheng1, Wan Min2
准噶尔盆地玛湖凹陷风南5井下二叠统风城组地层划分及取心段韵律特征 a—风南5井风城组综合柱状图;b—风南5井风城组二段典型的含碱层段岩心韵律特征,表现为浅色碱矿与暗色碳钠钙石质沉凝灰岩频繁互层,第1次取心,4066.04~4073.32 m