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Department of Earth and Atmospheric Sciences

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Ny Riavo VoarintsoaNy Riavo Voarintsoa

Assistant Professor, Sedimentary Geology

Curriculum Vitae

Office: Science & Research 1, 328A
Contact: ngvoarintsoa@uh.edu

Education: Ph.D., University of Texas at Austin, 1988

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Accepting Graduate Students? Yes

Geochemistry applied to Paleoclimate and Paleoenvironmental reconstruction using conventional isotopes, trace elements, triple oxygen isotopes, clumped isotopes in carbonates. Mineralogy, Petrography, Quaternary Research, Intertropical Convergence Zone, Monsoon, Africa, Rodrigues, Madagascar, Caves, Lakes

  • Li, H., Sinha, A., André, A.A., Spötl, C., Vonhof, H.B., Meunier, A., Kathayat, K, Duan, P Voarintsoa, N.R.G., Ning, Y., Biswas, J., Hu, P., Li, X., Sha, L., Zhao, J., Edwards, R.L., Cheng, H., (2021). A multi-millennial climatic context for the megafaunal extinctions in Madagascar and Mascarene Islands. Science Advances 6, no. 42, eabb2459
  • Fohlmeister, J., Voarintsoa, N.R.G, Lechleitner, F., Boyd, M., Brandstätter, S., Jacobson, M.J., and Oster, J. 2020. Main Controls on the Stable Carbon Isotope Composition of Speleothems. Geochimica et Cosmochimica Acta 279,67–87.
  • Voarintsoa, N.R.G., Barkan, E., Bergel, S., Vieten, R. and Affek, H.P., 2020. Triple oxygen isotope fractionation between CaCO 3 and H 2O in inorganically precipitated calcite and aragonite. Chemical Geology 539, p.119500.
  • Wang, L., Brook, G.A., Burney, D.A., Voarintsoa, N.R.G., Liang, F., Cheng, H., Edwards, R.L., 2019. The African Humid Period, rapid climate change events, the timing of human colonization, and megafaunal extinctions in Madagascar during the Holocene: Evidence from a 2m Anjohibe Cave stalagmite. Quaternary Sci Rev 210, 136–153.
  • Barkan E., Affek, H.P., Luz, B., Bergel, S., Voarintsoa, N.R.G., and Musan, I. 2019. Calibration of d 17O and 17O excess of three international standards - IAEA603, NBS19 and NBS18. Rapid Comm. Mass. Spec. 33, 737-740.
  • Voarintsoa, N.R.G., Matero, I.S.O., Railsback, L.B., Gregoire, L.J., Tindall, J., Sime, L., Cheng, H., Edwards, R.L., Brook, G.A., Kathayat, G., Li, X., Michel Rakotondrazafy, A.F., Madison Razanatseheno, M.O., 2019. Investigating the 8.2 ka event in northwestern Madagascar: Insight from data–model comparisons. Quaternary Sci Rev 204, 172-186.
  • Railsback, L.B., Brook, G.A., Liang, F., Voarintsoa, N.R.G., Cheng, H., and Edwards, R.L., 2018, A multi-proxy climate record from a northwestern Botswana stalagmite suggesting wetness late in the Little Ice Age (1810-1820 CE) and drying thereafter in response to changing migration of the tropical rain belt or ITCZ: Palaeogeography, Palaeoclimatology, Palaeoecology, v. 506, p. 139-153.
  • Railsback, L.B., Liang, F., Brook, G.A., Voarintsoa, N.R.G., Sletten, H.R., Marais, E., Hardt, B., Cheng, H., Edwards, R.L., 2018. The timing, two-pulsed nature, and variable climatic expression of the 4.2 ka event: A review and new high-resolution stalagmite data from Namibia. Quaternary Sci Rev 186, 78-90.
  • Voarintsoa, N.R.G., Railsback, L.B., Brook, G.A., Wang, L., Kathayat, G., Cheng, H., Li, X., Edwards, R.L., Rakotondrazafy, A.F.M., Madison Razanatseheno, M.O., 2017. Three distinct Holocene intervals of stalagmite deposition and nondeposition revealed in NW Madagascar, and their paleoclimate implications. Clim. Past 13, 1771-1790. Special Issue: Southern Hemisphere Assessment of PalaeoEnvironment (SHAPE)
  • Voarintsoa, N.R.G., Wang, L., Railsback, L.B., Brook, G.A., Liang, F., Cheng, H., Edwards, R.L., 2017, Multiple proxy analyses of a U/Th-dated stalagmite to reconstruct paleoenvironmental changes in northwestern Madagascar between 370 CE and 1300 CE, Palaeogeography, Palaeoclimatology, Palaeoecology. v. 469, p. 138–155. http://dx.doi.org/10.1016/j.palaeo.2017.01.003.
  • Voarintsoa, N.R.G., Brook, G. A., Liang, F., Marais, E., Hardt, B., Cheng, H., Edwards, R. L., and Railsback, L. B., 2017, Stalagmite multi-proxy evidence of wet and dry intervals in northeastern Namibia: Linkage to latitudinal shifts of the Inter-Tropical Convergence Zone and changing solar activity from AD 1400 to 1950: The Holocene, v. 27, no. 3, p. 384–396. doi:10.1177/0959683616660170.
  • Brook, G.A., Railsback, L. B., Scott, L., Voarintsoa, N.R.G., Liang, F., 2015, Late Holocene Stalagmite and Tufa Climate Records for Wonderwerk Cave: Relationships Between Archaeology and Climate in Southern Africa: African Archaeological Review, v. 32, no. 4, p. 1–32.
  • Railsback, L.B., Akers, P. D., Wang, L. X., Holdridge, G. A., and Voarintsoa, N.R., 2013, Layer-bounding surfaces in stalagmites as keys to better paleoclimatological histories and chronologies: International Journal of Speleology, v. 42, no. 3, p. 167–180.