Professional Expereince
Associate Professor - Organic Geochemistry, 2016-Present.
Department of Geology, Saint Mary's University, Halifax, Nova Scotia, Canada
Senior Scientist - Petroleum Geochemistry and Organic Geochemistry, 2011-2016.
GNS Science, Lower Hutt, New Zealand
Postdoctoral Researcher - Isotope Geochemistry and Organic Geochemistry, December 2008-2010.
Research: Stable isotopic analysis of vanadium and nickel organo-metal complexes with respect to the sequestration and stabilization in crude oils and sedimentary organic matter
Postdoctoral Researcher - Organic Geochemistry, Woods Hole Oceanographic Institution, 2006-2008.
Research: Analysis of hydrothermally altered organic matter and the development of petroleum correlation techniques using comprehensive two-dimensional gas chromatography.
Educational Experience
DOCTOR OF PHILOSOPHY
Organic Geochemistry, University of Illinois at Chicago, November 2006
Dissertation:
Biomarker analysis and environmental reconstruction of the Late Archean Tisdale (2707 – 2705 Ma) and Porcupine (2685 – 2673 Ma) Assemblages of the Abitibi Greenstone Belt, Timmins, ON, Canada.
Selected Publications
Ventura, G.T., Gall, L., Seibert, C., Prytulak, J., Belshaw, N., Szatmari, P., Hürlimann, M., Halliday, A.N., 2014. The isotopic composition of vanadium, nickel, and molybdenum in various crude oils using multi-collector inductively coupled plasma mass spectrometry (MC-ICPMS). Applied Geochemistry. Applied Geochemistry 59, 104-117.
Ventura, G.T., Simoneit, B.R.T., Nelson, R.K., Reddy, C.M., 2012. The composition, origin and fate of complex mixtures in the maltene fractions of hydrothermal petroleum assessed by comprehensive two-dimensional gas chromatography. Organic Geochemistry 45, 48-65.
Ventura, G.T., Hall, G., Nelson, R.K., Frysinger, G., and Gaines, R., Reddy, C.M. Multi-Molecular Oil Fingerprinting using Multiway Principle Components Analysis (MPCA and Comprehensive Two-Dimensional Gas Chromatography (GC×GC). Journal of Chromatography A. 1218 (18), 2584-2592.
Betancourt, S.S., Ventura, G.T., Pomerantz, D., Viloria, O., Dubost, F.X., Purcell, J., Nelson, R.K., Rodgers, R.P., Reddy, C.M., Marshall, A.G., Mullins, O.C., 2008. Nanoaggregates of Asphaltenes in a Reservoir Crude Oil. Energy and Fuels.
Ventura G.T., Kenig, F. Reddy, C., Nelson, R., Frysinger, G., and Gaines, R. 2008. The composition and formation of unresolved complex mixtures in Late Archean sediments analyzed by comprehensive two-dimensional gas chromatography (GC×GC). Organic Geochemistry 39 (7), 846-867.
Wardlaw, G.D., Reddy, C.M., Nelson, R.K., Arey, J.S., Ventura, G.T., Valentine, D.L. 2008. Biodegradation in the subsurface as a selective filter for natural petroleum emissions. Environmental Science and Technology 42, 7166-7173.
Ventura, G.T., Kenig, F., Reddy, C., Nelson, Schieber, S., Frysi- nger, G., and Gaines, R., Nelson, R., Schieber, S. 2007. Molecular evidence of Late Archean archaea and the presence of a subsurface hydrothermal biosphere. Proceedings of the National Academy of Sciences of the United States of America 104 (36), 14261-14266.