This research used samples and data provided by the Ocean Drilling Program (ODP). ODP is sponsored by the U.S. National Science Foundation (NSF) and participating countries under the management of the Joint Oceanographic Institutions (JOI), Inc. Thanks to my USGS colleagues Augusta Warden, Petroleum Team, and Dr. Craig Johnson, Minerals/CICT Team, for providing the stable isotope results. I especially thank Dr. Neely Bostick, USGS Emeritus Scientist, for the identification of the woody and organic concentrates and discussion of the origins and preservation of this organic matter.