它常与湖泊沉积、河流沉积和海洋沉积共生，沼泽沉积物主要分布在河流泛滥平原、河流三角洲、湖滨平原和海滨平原及某些平坦的高原上。沼泽沉积物（bog deposit）是指沼泽中形成的沉积物。它以泥炭、腐殖泥为主，有时也有少量泥沙沉积。
由于它们缺乏氧气，沼泽沉积物中的硫化物含量很高，而硫化物对大多数植物都有毒。
Because they lack oxygen, marsh sediments are high in sulfides that are toxic to most plants.
Horton认为那些沼泽简直就是“理想的自然实验室”，因为它们常常发生缓慢沉降，同时随着潮水携带进新的沉积物而被缓慢重构。
Those marshes are "an ideal natural laboratory," Horton said, because they are always slowly sinking and being rebuilt as tides wash in new sediment.
三角洲平原分流河道沉积底部泥砾较发育，沼泽沉积中发育植物根和褐煤沉积；三角洲前缘河口砂坝沉积物粒度较平原决口扇粗。
Mud gravel is often found in the base of distributary channel sediment, plant root and lignite often develop in the swamp sediment.
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