James Andrew Leong

Graduate Associate
Graduate Assistant/Associate

Student Information

Graduate Student
Geological Sciences
The College of Lib Arts & Sci


My PhD work explores the diverse chemical environments generated through water-rock interactions and their implications for the habitability of rock-hosted systems. This interest brought me to the Samail Ophiolite in Oman where I investigated low-temperature peridotite and gabbro-hosted hyperalkaline fluids, and to the Atlantis Bank in the Southwest Indian Ridge (IODP Exp. 360) where I examined high-temperature gabbro-fluid rock interactions. I employ methods in fluid and gas geochemistry, mineralogical analysis and thermodynamic calculations for my research.

Google Scholar

Research Interests

Aqueous Geochemistry, Fluid/Rock Interactions, Hydrothermal and Low-Temperature Mineralogy, Thermodynamic Calculations


Leong, J. A. M., and Shock, E. L. (2020). Thermodynamic constraints on the geochemistry of low-temperature, continental, serpentinization-generated fluids. American Journal of Science, 320(3), 185–235. https://doi.org/10.2475/03.2020.01

Dick, H. J. B., MacLeod, C. J., Blum, P., Abe, N., Blackman, D. K., Bowles, J. A., Cheadle, M. J., Cho, K., Ciazela, J., Deans, J. R., Edgcomb, V. P., Ferrando, C., France, L., Ghosh, B., Ildefonse, B., John, B., Kendrick, M. A., Koepke, J., Leong, J. A. M., Liu, C., Ma, Q., Morishita, T., Morris, A., Natland, J. H., Nozaka, T., Pluemper, O., Sanfilippo, A., Sylvan, J.B., Tivey, M.A., Tribuzio, R., and Viegas, G. (2019). Dynamic accretion beneath a slow-spreading ridge segment: IODP Hole 1473A and the Atlantis Bank Oceanic Core Complex. Journal of Geophysical Research: Solid Earth, 124(12), 12631–12659. https://doi.org/10.1029/2018JB016858

MacLeod, C. J., Dick, H. J. B., Blum, P., and the Expedition 360 Scientists. (2017). Southwest Indian Ridge Lower Crust and Moho. Proceedings of the International Ocean Discovery Program, 360: College Station, TX (International Ocean Discovery Program). http://dx.doi.org/10.14379/iodp.proc.360.2017

Research Activity

  • Leong,James Andrew Monton*. US Science Support Program Office Associated with the International Ocean Discovery Program (USSSP-IODP). COLUMBIA UNIV(12/1/2015 - 2/28/2017).