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Leg 20 recovered the first oolite drilled during the Deep Sea Drilling Project. The oolitic limestone was brought up from 83 and 106 meters subbottom depth in Cores 3 and 4 of Hole 202 on Ita Matai Seamount. Drilling of the seamount was undertaken at the end of Leg 20, when the poor state of repair of the drilling gear prohibited further drilling in deep water. Water depth at this site is 1515 meters. Thus Cores 3 (45 cm recovery) and 4 (35 cm recovery) come from a total depth of 1598 and 1621 meters, respectively. Ita Matai Seamount is located at the eastern margin of the Caroline Abyssal Plain (Figure 1). The location of Site 202 is 12°40.90'N, 156°57.15'E.

Diagenesis of a Seamount Oolite from the West Pacific, Leg 20, DSDP