Mailing address: PO Box 208109, New Haven CT 06520-8109
Street address: 210 Whitney Ave, New Haven CT 06511
My research includes two aspects of metamorphic fluids: the dynamics of metamorphic fluid flow and the chemical interactions between metamorphic fluids and rocks. Rocks experiencing deep metamorphism are viscously deformable and the fluid in the interconnected pores tends to be squeezed out. Different from the traditional Darcian flow which describes only the percolation of the fluid phase, this process is called compaction-driven fluid flow and can be described by the general two-phase flow theory. Numerical studies of the coupling between rock compaction and metamorphic devolatilization suggest a new form of fluid flow called porosity waves. Along with porosity waves are fluid pressure oscillations and fluid flux pulses which are not predicted by the traditional flow model. My current research is to reevaluate this compaction-driven flow in comparison with the traditional Darcian flow in terms of fluid driven reaction progress, energy and mass transport. Specifically, I am applying this compaction-driven fluid flow model to the deep carbon transport process to constrain deep metamorphic carbon fluxes.
Tian, M., Ague, J. J., 2014: The impact of porosity waves on crustal reaction progress and CO2 mass transfer, Earth and Planetary Science Letters, 390, 80-92.
Tian, M., Ague, J. J., Chu, X., Baxter, E.F., Sullivan, N., Chamberlain, C.P., and Rumble III, D., Metamorphic thermal transients caused by compaction-driven fluid flow, under review in Journal of Geophysical Research-Solid Earth.
Tao, R., Tian, M., Zhang, L., Zhu, J., Liu, X., Liu, J., Stagno, V., Fei, Y., Direct synthesis and natural formation of abiotic hydrocarbons from carbonates under subduction zone conditions, submitted to Geology.
Tian, M., Ague, J. J., On the competition between thermal convection and compaction-driven percolation of fluids in porous rocks during deep metamorphism, in preparation.
Chu, X., Ague, J. J., Tian, M. et al, Testing for rapid pulses of crustal scale heat transfer by modeling the garnet growth-diffusion profiles in metamorphic “hot spots”, New Hampshire, USA, in preparation
Tian, M., Ague, J. J., The impact of porosity waves on crustal reaction progress and CO2 mass transfer, Abstract # V23D-2849, 2012 Fall Meeting, AGU, San Francisco, CA. (poster)
Tian, M., Ague, J. J., Metamorphic thermal pulses caused by compaction-driven fluid flow, Abstract # 2043, 2014 Goldschmidt Conference, Sacramento, CA. (poster)