Crosby Postdoctoral Fellow

email lubnas <at>

Department of Earth, Atmospheric and Planetary Sciences
Massachusetts Institute of Technology
E25 6th Floor, 45 Carleton Street
Cambridge, MA 02139


2020-present –Crosby Fellow, MIT
2015-2020 – Ph.D., the Hebrew University of Jerusalem

Lubna Shawar is an organic geochemist and Crosby Postdoctoral Fellow in the Summons Lab. She studies classic biomarkers in bitumens and oils as tools to reconstruct paleoenvironmental history, petroleum sources, migration, and mixing.

Lubna Shawar has received her bachelor’s degree in chemistry and her doctoral degree in the study of sulfur isotope values of specific organic and inorganic S compounds in immature organic rich sediments from the Hebrew University of Jerusalem. She joined MIT in October 2020.


Shawar L., Grice K., Holman A. and Amrani A. (2020) C and S isotope composition of organic sulfur compounds provide insights to their origin and formation pathways. Organic Geochemistry 151, 104163.

Shawar L., Said-Ahmad W., Ellis G. and Amrani A. (2020) Sulfur isotope composition of individual compounds in immature source rocks and their possible geochemical implications. Geochimica et Cosmochimica Acta. 274, 20-44.

Shawar L., Halevy I., Said-Ahmad W., Boyko V., Kamyshny A., Feinstein S. and Amrani A. (2018) Dynamics of pyrite formation and organic matter sulfurization in organic-rich carbonate sediments. Geochimica et Cosmochimica Acta. 241, 219-239.