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铁法盆地为晚中生代半地堑式断陷盆地，阜新组的网结河沉积发育于断裂盆缘内侧冲积扇至湖缘三角洲之间的湖退进积体系域。大量的钻孔和矿井地质资料详尽揭示了网结河道相、河岸相及湿地相的特征，其中，泥石流沉积是网结河道相的一种特殊的成因类型。在有关各成因地层单元中，以网结河沉积体系的繁盛发育为主体，以网结河沉积体系的衰退并伴随大面积泥炭沼泽化而结束。盆缘断裂活动比较活跃、盆地沉降速率大、沉积充填速率高、河道坡降小是网结河发育的重要条件。
The Tiefa Basin is a Late Mesozoic semi-graben rift basin. The net junction of the Fuxin Formation developed from the alluvial fan inside the fault basin edge to the lake-derived sedimentary system tract between the lacustrine delta. A large number of boreholes and mine geological data reveal the characteristics of the networked channel facies, riparian facies and wetland phases in detail. Among them, the debris flow deposition is a special genetic type of networked channel facies. In all stratigraphic units related to each genesis, the main development of the network junction sedimentary system is dominated by the decline of the Netjiehe sedimentary system accompanied by a large area of peat swamping. Basin edge fault activity is active, the basin sedimentation rate, sedimentation rate, river slope reduction is an important condition for the development of nets.