Dr. McKenzie, Ryan

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Dr. McKenzie, Ryan

Assistant Professor

My research aims to develop a better understanding of the dynamic co-evolution of life and the Earth system through studies generally focused on sedimentary archives. Field-based research endeavors are supplemented with diverse analytical tools that include detrital sediment geochronology and geochemistry (e.g., detrital zircon analyses, trace elements, Nd, Li, and Sr isotopes), carbonate isotope geochemistry, and biostratigraphy.  I am particularly interested in understanding how lithospheric processes influence ocean–atmosphere chemistry, climate, and biospheric evolution. Active research projects: (1) investigating tectonic and environmental influences on animal evolution and mass extinctions; (2) refining the stratigraphic architecture and tectonic history of the Indian subcontinent; (3) Precambrian Earth System evolution with an emphasis on the Archean–Proterozoic and Neoproterozoic–Paleozoic transitions; and (4) broadly exploring tectonic influences on long-term carbon cycling and riverine-to-seawater chemistry. Field sites: India, Indonesia, Myanmar, North America, Argentina, China, South Korea, and southern Africa. For additional information please see website:  http://web.hku.hk/~ryan00/

PROSPECTIVE STUDENTS:
I study the geosciences because I thoroughly enjoy it and I am fortunate to make a living doing something I find fun and interesting. So if you are a student with broad interests in the Earth system and a general love for geology, please contact me! There are plenty of opportunities within my current projects, and I’m always keen to get involved in something new and exciting… 

Email: ryan00@hku.hk
Website http://web.hku.hk/~ryan00/
 

Teaching

Undergraduate
EASC3403     Sedimentary environments / GEOS8215 Sedimentology
EASC3417     Earth Through Time
EASC4955    Integrated field studies

Postgraduate
EASC6001     Research Seminars and Presentation of Thesis Proposal
EASC6009     Evolving Earth Systems

Selected Publications

  1. *Liu H., McKenzie N.R., *Colleps, C.L., Chen, W., Stockli L.,Ying, Y., Sarsud, A., & Stockli, D.F., in press, Detrital zircon isotope–trace element compositions track Paleozoic–Mesozoic slab dynamics and terrane accretion in Southeast Asia. Earth and Planetary Science Letters
  2. *Colleps, C.L., McKenzie, N.R., Guenthner, W. R., Sharma, M., Gibson, T.M., Stockli, D.F., 2021, Apatite (U-Th)/He thermochronometric constraints on the northern extent of the Deccan Large Igneous Province. Earth and Planetary Science Letters. 571, 117087.
  3. McKenzie, N.R., Smye, A.J., Hegde, V., Stockli, D.F., 2018, Continental growth histories revealed by detrital zircon trace elements: a case study from India. Geology. v. 46, no 3, p. 275-278.
  4. McKenzie, N.R., Horton, B.K., Loomis, S.E., Stockli, D.F., Planavsky, N.J., and Lee, C-T.A., 2016, Continental arc volcanism as the principal driver of icehouse–greenhouse variability. Science. v. 352, p. 444-447.
  5. Lee, C-T.A., Yeung, L.A., McKenzie, N.R., Yokoyama, Y., Ozaki, K., and Lenardic, 2016, Two-step rise of atmospheric oxygen linked to the growth of continents. Nature Geoscience. v.9, p.417-           424.