Fig. 4. Conspicuous beds recovered during ODP Leg 171B. (a) Close-up of the K-P boundary in Hole 1049A showing the spherule bed that is interpreted as ejecta material from Chicxulub. (b) Close-up of the lower Albian black shale that is time equivalent to Oceanic Anoxic Event 1b. (c) Condensed section separating sediments of Campanian age (above) and Santonian age (below), from Hole 1050C.