Figure F29. Sketch of oceanic subsidence history of Site 1122, Bounty Fan, in almost 4500-m present-day water depth. The site is slightly to the east of marine magnetic Anomaly 32 (late Campanian, ~72 Ma). Over 600 m of Neogene turbiditic and "drift" type sediment fill was cored at Site 1122. Campanian-Paleocene siliceous clays, overlying ocean basement at the site, are inferred from analog strata cored at Site 1121 and DSDP Site 275 (see "Lithostratigraphy" in the "Site 1121" chapter) and from multichannel seismic data at Site 1122. The basal, oceanic sediments are estimated to be ~1 km thick.