Sediment accumulation rates are given in meters per million years … m/myr = mm/ka = Bubnoff unit (named after the German-Baltic geologist Serge von Bubnoff) … see Fischer, A.G. 1969. Geological time-distance rates: the Bubnoff unit. Bulletin of the Geological Society of America, 80: 549-552.
Centimeters or millimeters per unit time (years, decades, centuries, millennia etc.)
The sedimentation rate is defined as the volume of sediments deposited in unit time and is usually denoted as cm/kyr. The sedimentation rate along continental margins depends on several factors including sea level, distance from the point of riverine influx as well as the coast, shelf width, surface currents, water depth, wind direction, and the physico-chemical as well as biological conditions, especially productivity (Swift, 1974; Hill et al., 2007). Post-depositional processes, however, also affect sediments and may lead to excess accumulation as well as dissolution/removal of sediments deposited on the sea-floor (Berner, 1980; Mulder and Cochonat, 1996). The result of post-depositional diagenetic processes is the final accumulation of sediments, defined as sedimentation rate (McKee et al., 1983). The sedimentation rate in the continental margins also depends on sea-level, turbidite activity, carbonate preservation, bioturbation, wave and storm action (Krishnaswami et al., 1980; Mucci et al., 1999; Prins et al., 2000; Hill et al., 2007; Carvalho et al., 2011; Kristensen et al., 2012; Limmer et al., 2012a) as well as local tectonics (Limmer et al., 2012b). The sedimentation rate can be calculated by dating (210Pb, 14C) the sediments at different levels of the core (Borole, 1988; Manjunatha and Shankar, 1992; Nigam et al., 1995; Somayajulu et al., 1999; Carvalho et al., 2011).
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