Models of submarine-fan development.

Models of submarine-fan development. (a) Shallow-marine deposition during a period of high sea level- accommodation is located on the shelf. (b) Deep-sea deposition during a period of falling and low sea level-accommodation is relocated to the deep sea. Modified from Catuneanu (2002). (c-d) Deep-sea sediment delivery at low (c) and high (d) sea levels in the California Continental Borderland (modified from Covault et al. 2007, 2011, and Normark et al. 2009). Sea level is from Lambeck & Chappell (2001). During the period of sea-level highstand (d), La Jolla Canyon head has been incised across the shelf to the beach and intercepts longshore-drift-transported sediment. As a result, terrigenous sediment is delivered to submarine fans at both low and high sea levels. mbpsl is meters below present sea level. OIS is oxygen isotope stage. ka is thousands of years ago.