The submarine Haakon Mosby mud volcano was studied in detail during several cruises, resulting in the collection of an abundant and diverse lithological material. Comprehensive field and laboratory studies made it possible to identify different types of sediments with specific granulometric and pelite fraction (<0.005 mm)="" compositions,="" as="" well="" as="" the="" regularity="" of="" their="" spatial="" distribution="" relative="" to="" various="" morphostructural="" zones="" of="" the="" mud="">