title: Aqueous organic geochemistry at high temperature/high pressure.
abstract: It is the purpose of this chapter to provide a description of the fate and chemical alterations of organic matter under hydrothermal conditions, with a brief overview of the geographic localities where these processes have been studied to date.  Two major but overlapping aspects will be considered: (a) Alteration and degradation processes and reactions, both reductive and oxidative, and (b) synthesis processes and reactions that are primarily reductive.
authors.affiliation: Petroleum Research Group, College of Oceanography, Oregon State University, Corvallis 97331.
authors.forename: B R
authors.initials: BR
authors.lastname: Simoneit
mesh_terms: D001274:Atmospheric Pressure; D002625:Chemistry, Organic; D055593:Geological Phenomena; D005844:Geology; D006358:Hot Temperature; D006838:Hydrocarbons / Q000032:analysis / Q000737:chemistry*; D009792:Oceans and Seas; D055601:Organic Chemistry Phenomena; D010084:Oxidation-Reduction; D010578:Petroleum / Q000032:analysis*; D012623:Seawater / Q000032:analysis
chemical_list: D006838:Hydrocarbons; D010578:Petroleum