02555nas a2200385   4500000000100000008004100001260003600042653003600078100001700114700002300131700002300154700001800177700001600195700001800211700001300229700001200242700001700254700001600271700001700287700001400304700001300318700001700331700001600348700002300364700001800387700002300405700001300428700001800441245017300459856005100632300001200683490000700695520144500702020002202147       2010                            d  bSpringer NetherlandsaDordrecht10aEarth and Environmental Science1 aDavid Mosher1 aLorena Moscardelli1 aChristopher Baxter1 aRoger Urgeles1 aCraig Shipp1 aJason Chaytor1 aHoma Lee1 aR. Wynn1 aP.J. Talling1 aD.G. Masson1 aC. Stevenson1 aBT Cronin1 aT. LeBas1 aDavid Mosher1 aCraig Shipp1 aLorena Moscardelli1 aJason Chaytor1 aChristopher Baxter1 aHoma Lee1 aRoger Urgeles00aInvestigating the Timing, Processes and Deposits of One of the Worlds Largest Submarine Gravity Flows: The \textquoteleftBed 5 Event\textquoteright Off Northwest Africa  uhttp://dx.doi.org/10.1007/978-90-481-3071-9_38  a463-4740 v283 aAn extensive dataset of shallow sediment cores is used here to describe one of the Worlds most voluminous and extensive submarine gravity flows. The Bed 5 event, dated at ~60 ka, originated on the upper slope offshore Atlantic Morocco, in the vicinity of Agadir Canyon. The volume of initial failure was ~130 km 3 of sediment, and the failure appeared to rapidly disintegrate into a highly mobile turbidity current. Widespread substrate erosion beneath the flow occurred up to 550 km from the interpreted source, and is estimated to have added a further 30 km 3 of sediment. The flow spread upon exiting Agadir Canyon, with deposition occurring across both the Agadir Basin and Seine Abyssal Plain. Evidence for flow transformations and linked turbidite-debrite development can be found in both basins, and there are also indications for sediment bypass and fluid mud behaviour. A portion of the flow subsequently spilled out of the western Agadir Basin, and passed through the Madeira Channels prior to deposition on the enclosed Madeira Abyssal Plain at 5,400 m water depth. The total run-out distance along the flow pathway is about 2,000 km, with only about half of the pathway confined to canyon or channel environments. Our results show that large-volume submarine landslides can rapidly disintegrate into far-traveling fluid turbidity currents, and that deposi-tional processes within such flows may be complex and spatially variable  a978-90-481-3071-9