02121nas a2200241   4500000000100000000000100001008004100002653001900043653001900062653002100081653001700102653001400119100002700133700001700160700001900177700001800196245008600214856007100300300001400371490000700385520147300392020001401865       2009                            d10aCanary Islands10aLinked debrite10anorthwest Africa10aSahara Slide10aturbidite1 aAggeliki Georgiopoulou1 aRussell Wynn1 aDouglas Masson1 aMichael Frenz00aLinked turbidite-debrite resulting from recent Sahara Slide headwall reactivation  uhttp://www.sciencedirect.com/science/article/pii/S0264817209000579  a2021-20310 v263 aThe northwest African margin has been affected by numerous large-scale landslides during the late Quaternary. This study focuses on a recent collapse of the Sahara Slide headwall and characterises the resulting flow deposit. Core and seismic data from the base of the upper headwall reveal the presence of blocky slide debris, comprising heavily deformed hemipelagic slope sediments. The blocky slide debris spilled over a lower headwall 60 km downslope and formed a thick transparent debris flow unit. Cores recovered 200\textendash250 km farther downslope contain a surficial turbidite that is interpreted to be linked to the headwall collapse event based on timing and composition. One core located approximately 200 km from the headwall scar (C13) contains debrite encased in turbidite. The debrite comprises sheared and contorted hemipelagic mudstone clasts similar as those seen in the vicinity of the Sahara Slide headwall, and lacks matrix. This debrite pinches out laterally within 25 km of C13, whereas the accompanying turbidite can be correlated across 700 km of the northwest African margin. The linked turbidite\textendashdebrite bed is interpreted to have formed through recent failure of the steep Sahara Slide headwall that either 1) generated both a debris flow and a turbidity current almost simultaneously, or 2) generated a debris flow which with entrainment of water and progressive dilution led to formation of an accompanying turbidity current.  a0264-8172