• Determination, assessment, and interpretation of molecular and isotopic characteristics of organic matter to identify biogeochemical processes associated with carbon cycling in modern and ancient natural systems.
  • Activities focused on the exploration and application of biomarkers and their isotopic signatures as environmental, paleoclimatic, stratigraphic and geochemical tools to better understand:
  • Environmental and climatic signals recorded in the temporal and spatial variations of the molecular and isotopic characteristics of sedimentary organic matter.
  • The capacity of molecular and isotopic signals to reflect controls on primary production and factors that affect the survival of organic matter in sediments, particularly microbial processes.
  • The evolutionary progression of life through time, especially biosynthetic responses preserved in the biogeochemical carbon cycle that are related to global perturbations of the ocean and atmosphere.
  • Depositional controls on the formation of petroleum source rocks and influences on the generation, composition, and biodegradation of petroleums, and the fate of hydrocarbons in the environment.

Research Interests:

  • molecular and isotopic characteristics of organic matter; biogeochemical processes; paleoclimates; biochemical evolution; petroleum carbon cycling


  • Organic Geochemistry
  • Geosciences
  • Paleoclimatology
  • Biogeochemistry
  • Paleoceanography

Skills and Expertise:

  • Biomarkers
  • Sedimentary Basins
  • Exploration
  • Geology
  • Tectonics
  • Environmental Science
  • Geochemistry
  • Basin Analysis
  • Petroleum Exploration
  • Biogeochemistry
PhD, University of Bristol, United Kingdom, Organic Geochemistry, 1980
BS, University of Bristol, United Kingdom, Chemistry and Geology, 1976
molecular marine biology geochemistry geology sedimentology sedimentary geochemistry marine and ocean sciences ocean chemistry sediment