"hydrogenous sediment"^^ . "pbuttigieg"^^ . "Hydrogenous sediment is derived from solutes that precipitate out of sea water by a variety of chemical reactions. These are typically less abundant than other sediment types."^^ . "SWEETRealm:HydrogenousSediment"^^ . "2010-03-17T01:14:02Z"^^ . "ENVO:01000110"^^ . "ENVO"^^ . . .