We review the three regional anastomosing fluvial systems, both ancient and modern. The dinosaur-bearing upper Triassic succession in Krasiejów (S Poland) is composed of siltstones and claystones that are divided into three facies associations. One of the fluvial associations is characterized by features typical of a low-energy anastomosing river system in a tropical semiarid climate, interpreted as the result of accumulation in deep, wide and low-sinuosity palaeochannels with pronounced vertical accretion. Deposition from suspension predominated in flows of very low stream power. The upper Neogene muddy succession in a tectonically active area (Kleczew Graben, central Poland) includes a great number of fluvial palaeochannels filled with sand and/or mud. These ribbon-shaped fluvial bodies are deep and wide, and represent channels showing very limited lateral migration. They were filled mostly under low-energy conditions, and their mapped course shows an “anabranching” pattern in plan view. The palaeochannels are transitional from sand- to mud-dominated. The Holocene upper Narew River (NE Poland) represents a modern anastomosing fluvial system. The interconnected channels form an anabranching pattern. The channels are straight to slightly sinuous, relatively deep and wide. Interchannel, low-lying “islands” are covered by peat-forming plants. Despite the low stream power, in-channel deposition is dominated by sand transported as bedload. The channel banks are stabilised by vegetation, which effectively prevents their lateral migration.

我们回顾了古代和现代的三个区域吻合河流系统。Krasiejów（波兰南部）含恐龙的上三叠统演替由粉砂岩和粘土岩组成，分为三个相组合。其中一个河流组合的特征是热带半干旱气候中低能量吻合河流系统的典型特征，被解释为在具有明显垂直吸积的深、宽和低曲折度的古河道中积累的结果。在非常低的流功率的流动中，悬浮液的沉积占主导地位。构造活动区（波兰中部的 Kleczew Graben）的上新近纪泥质层序包括大量充满沙子和/或泥浆的河流古河道。这些带状的河流体深而宽，并代表显示非常有限的横向迁移的通道。它们大部分是在低能量条件下填充的，它们的映射路线在平面图中显示出“分叉”模式。古河道从以砂为主向以泥为主过渡。全新世上游纳雷夫河（波兰东北部）代表了一个现代的吻合河流系统。相互连接的通道形成一个分支模式。通道笔直到略微弯曲，相对较深和较宽。河道间低洼的“岛屿”被形成泥炭的植物所覆盖。尽管流功率低，但通道内沉积主要是作为床载运输的沙子。河道岸被植被稳定，有效地阻止了它们的横向迁移。他们的地图路线在平面图中显示了“分支”模式。古河道从以砂为主向以泥为主过渡。全新世上游纳雷夫河（波兰东北部）代表了一个现代的吻合河流系统。相互连接的通道形成一个分支模式。通道笔直到略微弯曲，相对较深和较宽。河道间低洼的“岛屿”被形成泥炭的植物所覆盖。尽管流功率低，但通道内沉积主要是作为床载运输的沙子。河道岸被植被稳定，有效地阻止了它们的横向迁移。他们的地图路线在平面图中显示了“分支”模式。古河道从以砂为主向以泥为主过渡。全新世上游纳雷夫河（波兰东北部）代表了一个现代的吻合河流系统。相互连接的通道形成一个分支模式。通道笔直到略微弯曲，相对较深和较宽。河道间低洼的“岛屿”被形成泥炭的植物所覆盖。尽管流功率低，但通道内沉积主要是作为床载运输的沙子。河道岸被植被稳定，有效地阻止了它们的横向迁移。相互连接的通道形成一个分支模式。通道笔直到略微弯曲，相对较深和较宽。河道间低洼的“岛屿”被形成泥炭的植物所覆盖。尽管流功率低，但通道内沉积主要是作为床载运输的沙子。河道岸被植被稳定，有效地阻止了它们的横向迁移。相互连接的通道形成一个分支模式。通道笔直到略微弯曲，相对较深和较宽。河道间低洼的“岛屿”被形成泥炭的植物所覆盖。尽管流功率低，但通道内沉积主要是作为床载运输的沙子。河道岸被植被稳定，有效地阻止了它们的横向迁移。