Comments from Masanobu Yamamoto helped to improve this contribution. Recovery of 8002 m of sediment core during Leg 175 created a virtually ceaseless analytical challenge to Anne Pimmel and Tim Bronk in the JOIDES Resolution chemistry laboratory, which they handled with professional grace. I am grateful to them. The computer wizardry of Dale Austin converted my rough figures into scientific art. Antoni Rosell-Melé kindly provided Rock-Eval analytical results for Site 1087. I thank DSDP and ODP, funded by the National Science Foundation and International Phase of Ocean Drilling countries, for providing the unique opportunity to participate in both Leg 75 and Leg 175. I prepared this summary while a Fellow at the Hanse-Wissenschaftskolleg, and I am grateful for this opportunity.