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
准噶尔盆地南缘西部下侏罗统三工河组吉尔伯特式浅水辫状河三角洲部分沉积微相岩相特征 a—小型交错层理砂岩,正粒序,水下分流河道,J1 s 2 1 ,SC1井,4060.1 m;b—灰色泥岩,含植物化石,间湾,J1 s 1,SC1井,4189.0 m;c—块状砾岩,前缘沙坝(近端),J1 s 2 2 ,A2井,3702.73 m;d—块状中细砂岩,前缘沙坝(远端),J1 s 2 2 ,A2井,3701.53 m;e-f—岩屑中细砂岩,分选好,次棱—次圆状,岩屑以中酸性喷出岩为主,少量变质岩,前缘沙坝,J1 s 2 2 ,A2井,3699.7 m;g-h—岩屑砂砾岩,分选差,次棱—次圆状,岩屑以中酸性喷出岩为主,少量变质岩,水下分流河道,J1 s 2 1 ,A2井,3747.3 m;i—底部滞留砾岩,水下分流河道, J1 s 2 1 ,A2井,3747.96 m;j-k-l—岩屑砂岩,分选差,水下分流河道,J1 s 2 1 ,SC1井,4061.3 m