Adjunct Professor
Director, Center for Applied Isotope Studies

Contact Info

CAIS 164
Office Hours:
Tuesday & Thursday by appointment
Phone Number:
Of note:
  • Associate Editor, Geoarchaeology
  • Associate Editor, Journal of Archaeological Science: Reports
  • Editorial Board, Science and Technology in Archaeological Research

Ph.D. Archaeology, University of Barcelona

M.A., Anthropology, University of Missouri, Columbia

B.A., Anthropology, Northern Arizona University

A.A., Anthropology, Cochise College

Research Interests:

Radiocarbon dating; isotope and trace-element geochemistry; archaeological science; environmental studies (heavy metals/industrial pollution and global and prehistoric climate change); terminal Pleistocene archaeology; prehistory of the Northern Plains, American Southwest, Alaska, and Northeast Asia; contact and acculturation, scientific method; quantitative research methods; and development of new analytical technologies, especially portable instrumentation.

Selected Publications:

Speakman, R.J., C.S. Hadden, M.H. Colvin, J. Cramb, K.C. Jones, T.W. Jones, I. Lulewicz, K.G. Napora, K.L. Reinberger, B.T. Ritchison, A.R. Edwards, V.D. Thompson (2018). Market Share and Recent Hiring Trends in Anthropology Faculty Positions. PLOS ONE 13(9):e0202528.

Speakman, R.J., C.S. Hadden, M.H. Colvin, J. Cramb, K.C. Jones, T.W. Jones, C.L. Kling, I. Lulewicz, K.G. Napora, K.L. Reinberger, B.T. Ritchison, M.J. Rivera-Araya, A.K. Smith, V.D. Thompson (2018). Choosing a Path to the Ancient World in a Modern Market: The Reality of Faculty Jobs in Archaeology. American Antiquity 83:1–12.

Creel, D., and R.J. Speakman (2018). Mimbres Pottery: New Perspectives on Production and Distribution. In New Perspectives on Mimbres Archaeology: Three Millennia of Human Occupation in the North American Southwest, edited by Barbara Roth, Patricia Gilman, and Roger Anyon. University of Arizona Press, Tucson.

Jones, T.W., J. Birch, R.F. Williamson, T.J. Abel, R.J. Speakman, L. Lesage (2018). Steatite Characterization using X-Ray Fluorescence and Insights into Northern Iroquoian Interregional Interaction. Journal of Archaeological Science Reports 20:506–515.

Jones, T.W., R.J. Speakman, B. Billeck, R.J. Hoard. (2018). A Multi-Regional Obsidian Database for the Eastern Plains. Plains Anthropologist. DOI 10.1080/00320447.2018.1480860.

Barrett, C.A., W. Chouyyok, R.J. Speakman, K.B. Olsen, and R.S. Addleman (2017). Rapid Extraction and Assay of Uranium from Environmental Surface Samples. Talanta 173:96–78.

Brink, J.W., C. Barron-Ortiz, K.M. Loftis, and R.J. Speakman (2017). Pleistocene Horse and Possible Human Association in Central Alberta, 12,700 Years Ago. Canadian Journal of Archaeology In Press.

Cooper, H.K, O.K. Mason, V. Mair, J.F. Hoffecker, and R.J. Speakman (2016). Evidence of Eurasian Metal Alloys on the Alaskan Coast in Prehistory. Journal of Archaeological Science 74:176–183.

Williams, V.I., C.M. Santoro, R.J. Speakman, M.D. Glascock, A.L. Romero Guevara, D. Valenzuela, V.G Standen, T.N. D`Altroy (2016). Instrumental Neutron Activation Analysis of Inka and Local Pottery from Northern Chile's Atacama Desert and Late Prehistoric Interregional Interaction in the Southern Andes. Journal of Archaeological Science: Reports 9:481–492.Hunt, A.M.W., and R.J. Speakman, 2015. Portable XRF Analysis of Archaeological Sediments and Ceramics. Journal of Archaeological Science 53:626–638.

Moini, M., A. O’Halloran, A.M. Peters, C.A.M. France, E.P. Vicenzi, T.G. DeWitt, E. Langan, T. Walsh, and R.J. Speakman (2014). Understanding Irregular Shell Formation of Nautilus in Aquaria: Chemical Composition and Structural Analysis. Zoo Biology 33:285–294.

Speakman, R.J. and M.S. Shackley (2013). Silo science and portable XRF in archaeology: A response to Frahm. Journal of Archaeological Science 40:1435–1443.

Speakman, R.J., N.C. Little, D. Creel, M.R. Miller and J.G. Iñañez (2011). Sourcing ceramics with portable XRF spectrometers? A Comparison with INAA using Mimbres pottery from the American Southwest. Journal of Archaeological Science 38:3483–3496.