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江苏北部金湖凹陷阜宁群二组(简称阜二组),是一套由粘土岩、粉细砂岩及碳酸盐岩(生物灰岩)组成的地层。唐天福等自上而下划分为三个亚段:1.泥岩亚段(E_f~(2+3)),为黑色伊利石蒙脱石粘土岩。顶部为白色粉砂岩,可与上覆的阜宁群三组相区分,厚25—60米。2.七尖峰亚段(E_f~(2-2)),是苏北盆地阜宁群二组中最稳定,标志性较强的一个亚段,为黑色蒙脱石伊利石粘土岩夹薄层泥灰岩及灰质粘土岩。在电阻率曲线上有五至七个不同的
The Fu Ning Group II (or Fu 2 Formation) in the Jinhu Depression of northern Jiangsu is a set of formations consisting of clay rock, fine siltstone and carbonate rock (bio-limestone). Tang Tianfu top-down divided into three sub-paragraphs: 1. Mudstone sub-paragraph (E_f ~ (2 +3)), black illite montmorillonite clay rock. The top of white siltstone, with the overlying Funing group of three groups, 25-60 meters thick. 2. The Qifeng sub-section (E_f ~ (2-2)) is the most stable and strong sub-section of the Funing Group in the Northern Jiangsu Basin. It is a thin layer of black smectite-illite clay Marl and gray clay rock. There are five to seven different on the resistivity curve