准噶尔盆地南部下侏罗统三工河组沉积体系及其控制因素*
焦国华1, 张卫平1, 谢利华2, 王军1, 周晋科1, 汪云海1

Depositional systems and their controlling factors of the Lower Jurassic Sangonghe Formation in southern Junggar Basin
JIAO Guohua1, ZHANG Weiping1, XIE Lihua2, WANG Jun1, ZHOU Jinke1, WANG Yunhai1
准噶尔盆地南部下侏罗统三工河组毯式浅水辫状河三角洲岩相特征 a—正粒序含砾砂岩,水下分流河道,J1 s 2 1 ,Z3井,4170.6 m;b—块状细砂岩,前缘沙坝,J1 s 2 1 ,Z3井,4182.1 m;c—块状细砂岩,前缘沙坝,J1 s 2 1 ,Z3井,4191.5 m;d—底部冲刷正粒序含砾粗砂岩,砾石定向排列,水下分流河道,J1 s 2 1 ,MQ1井,6121.0 m;e—块状细砂岩,前缘沙坝,J1 s 1,D2井,5296.48 m;f—灰色斜层理中砂岩,前缘沙坝,J1 s 2 2 ,D6井,5297.41 m;g-h—长石岩屑中砂岩,前缘沙坝,岩屑多为中酸性喷出岩,分选好,J1 s 2 2 ,D6井,5299.5 m;i-j—多期水下分流河道叠置,正粒序砾岩—砂岩,J1 s 2 1 ,Z5井,4292.31~4296.76 m