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Ann G. Dunlea, PhD

Assistant Scientist

Marine Chemistry and Geochemistry

Contact Information:
Work: 508-289-3423
Building: Clark 413

Mailing Address:
266 Woods Hole Road, MS #25
Woods Hole Oceanographic Institution
Woods Hole, MA 02543


Ph.D. Earth Sciences. 2016. Boston University, Boston, MA.

B.S. Environmental Sciences. 2010. University of Rochester, Rochester, NY.

Research Interests

  • (Bio)geochemistry of marine sediment
  • Paleoclimatology/Paleoceanography
  • Cycling of elements (metal) between seawater and sediment
  • Global fluxes of dust and volcanic ash
  • Reverse weathering and implications for global seawater budgets and climate
  • "Unmixing" geochemical datasets with multivariate statistics
  • Subseafloor microbiology and geochemistry
  • Monsoon Variability

Select Publications

  • Dunlea, A. G., L. A. Tegler, B. Peucker-Ehrenbrink, A. D. Anbar, S. J. Romaniello, T. J. Horner, (2021) Pelagic clays as archives of marine iron-isotope chemistry. Chemical Geology, 575, 12020. doi: 10.1016/j.chemgeo.2021.120201
  • Dunlea A. G., R. W. Murray, R. Tada, C. A. Alvarez-Zarikian, C. H. Anderson, A. Gilli, L. Giosan, T. Gorgas, R. Hennekam, T. Irino, M. Murayama, L. C. Peterson, G-J. Reichart, A. Seki, H. Zheng, M. Ziegler (2020) Inter-comparison of XRF core scanning results from 7 labs and approaches to practical calibration. Geochemistry, Geophysics, Geosystems, 21, e2020GC009248, doi: 10.1029/2020GC009248
  • Dunlea, A. G., L. Giosan, Y. Huang (2020) Pliocene expansion of C4 vegetation in the core monsoon zone on the Indian Peninsula. Climates of the Past, 16, 1-14. doi: 10.5194/cp-16-1-2020
  • Dunlea, A. G., R. P. Scudder, R. W. Murray (2018) Marine Sediment. In White W.M. (eds) Encyclopedia of Geochemistry. Encyclopedia of Earth Sciences Series. Springer, Cham. doi: 10.1007/978-3-319-39312-4_105
  • Dunlea, A. G., R. W. Murray, D. P. Santiago Ramos, and J. A. Higgins (2017) Cenozoic global cooling and increased seawater Mg/Ca via reduced reverse weathering. Nature Communications, 8, doi:10.1038/s41467-017-00853-5
  • Dunlea, A. G., and R. W. Murray (2015) Optimization of end-members used in multiple linear regression geochemical mixing models. Geochemistry, Geophysics, Geosystems, 16, 4021-4027. doi: 10.1002/2015GC006132
  • Dunlea, A. G., R. W. Murray, J. Sauvage, R. A. Pockalny, A. J. Spivack, R. N. Harris, and S. D’Hondt (2015) Cobalt-based age models of pelagic clay in the South Pacific Gyre. Geochemistry, Geophysics, Geosystems, 16, 2694-2710. doi: 10.1002/2015GC005892
  • Dunlea, A. G., R. W. Murray, J. Sauvage, A. J. Spivack, R. N. Harris, and S. D’Hondt (2015) Dust, volcanic ash, and the evolution of the South Pacific Gyre through the Cenozoic. Paleoceanography, 30, 1078-1099. doi: 10.1002/2015PA002829
  • Dunlea, A. G., R. W. Murray, R. N. Harris, M. A. Vasiliev, H. Evans, A. J. Spivack, and S. D’Hondt (2013) Assessment and use of NGR instrumentation on the JOIDES Resolution to quantify U, Th, and K concentrations in marine sediment. Scientific Drilling, 15, 57-63. doi:10.2204/

Select Awards

  • Ocean and Climate Change Institute Postdoctoral Scholarship, 2016, Woods Hole Oceanographic Institution
  • Director’s Award for Outstanding Teaching in the Marine Semester, 2014, Boston University
  • Participation on IODP Expedition 346, 2013, Integrated Ocean Drilling Program
  • Dean’s Fellowship, 2010, Boston University
  • High Honors in Research, 2010, University of Rochester