# Barbara Sherwood Lollar Back to [[Abiogenic Oil and the Fossil Fuel Debate]] · [[Research and Evidence]] **Role:** Isotope geochemist; leading researcher on abiotic hydrocarbons - Lead author of [Sherwood Lollar et al. 2002 (*Nature*)](https://doi.org/10.1038/416522a). The paper found abiogenic alkanes in Canadian Shield mines and concluded "we can now rule out the presence of a globally significant abiogenic source of hydrocarbons." - Co-author of [Etiope & Sherwood Lollar 2013](https://doi.org/10.1002/rog.20011). - ⚠️ Affiliation (University of Toronto) from general knowledge.