The PaleoceneSiriCanyon extendsfor morethan120 kmfrom the StavangerPlatform to the TailEnd Grabenalongthe Danish-NorwegianNorthSea boundary.Initialformation ofthe canyon systemtookplace in the Early Paleocene(Danian) andwasrelated to major,submarineslidinginthe uppermostchalksection caused byupliftofthe Scandinavianhinterlands. The trendofthe canyon partly follows salt structuresalongthe southern edge ofthe Norwegian-DanishBasin(part ofthe Northern ZechsteinBasin). The canyon fill consists ofdeepmarine, highly glauconitic sandstonesinterbeddedwithhemipelagic andturbiditemarls andmudstones. Asfor many Paleocened eep-marinesandstonesint he NorthS ea, the sandstoneso fthe SiriC anyon aremassivea nd blocky. Frequent occurrence ofi njected sandstonesills/dykes,i njection breccias,a sw ell aserosion and associated rip-down clasts alongthe upperboundariesof insitu sandstones,indicatethorough, post-depositional modification.Fluidization is,thus,likely to be the mainreason for the generalscarcity ofprimary sedimentary structuresandmassiveappearance ofthe sandstones. All sandstonesarebasically free ofdetritalclays andmost likely formed from non-cohesive, concentrated density flows probably developed asturbidity currents. The sand flows werec onfined byt he canyon andthe depositionalp attern indicatesac omplexinteraction ofturbidity currents,salt-induced seafloor topographyandd ifferentialcompaction. Releaseofsandyflows wasp robably caused byseismic shocksresultinginacollapseofunstableshelfsandsconcentrated on the StavangerPlatform. Transport distanceso fthe sandsw ereup to 120 kmandtherebycontrast withmany Paleocenesubmarine sandstonesint he NorthS ea.The deep-marineplayint he SiriC anyon relieso nl ongd istance migration of hydrocarbons,up to 75kmfrom matureJurassic source rocksinthe CentralGraben. Thiswasfacilitated bythe elongateandconfined geometry ofthe sandstonesformingawell-connected systemfor updipmigration.