All Stories

  1. A multi-regional obsidian database for the Eastern Plains

    Article • Plains Anthropologist, July 2018, Taylor & Francis

    Dr Robert J Speakman

  2. CHOOSING A PATH TO THE ANCIENT WORLD IN A MODERN MARKET: THE REALITY OF FACULTY JOBS IN ARCHAEOLOGY

    Article • American Antiquity, August 2017, Cambridge University Press

    Dr Robert J Speakman

  3. Portable XRF analysis of archaeological sediments and ceramics

    Article • Journal of Archaeological Science, January 2015, Elsevier

    Dr Robert J Speakman

  4. Major, minor and trace element mass fractions determined using ED-XRF, WD-XRF and INAA for five certified clay reference materials: NCS DC 60102–60105; NCS DC 61101 (GBW 03101A, 03102A, 03103, and 03115)

    Article • Journal of Radioanalytical and Nuclear Chemistry, June 2014, Springer Science + Business Media

    Dr Robert J Speakman

  5. Measuring heavy metal content in bone using portable X-ray fluorescence

    Article • Open Journal of Archaeometry, May 2014, PAGEPress Publications

    Dr Robert J Speakman

  6. Understanding irregular shell formation of Nautilus in aquaria: Chemical composition and structural analysis

    Article • Zoo Biology, May 2014, Wiley

    Dr Robert J Speakman

  7. Stable isotopic and chemical indicators of volcanic eruptions in tree rings from Parícutin, Mexico

    Article • Open Journal of Archaeometry, January 2014, PAGEPress Publications

    Dr Robert J Speakman

  8. New Evidence for a Possible Paleolithic Occupation of the Eastern North American Continental Shelf at the Last Glacial Maximum

    Article • January 2014, Springer Science + Business Media

    Dr Robert J Speakman

  9. Serpentine Hot Springs, Alaska: results of excavations and implications for the age and significance of northern fluted points

    Article • Journal of Archaeological Science, December 2013, Elsevier

    Dr Robert J Speakman

  10. Potters and pigments: preliminary technological assessment of pigment recipes of American majolica by synchrotron radiation micro-X-ray diffraction (Sr-μXRD)

    Article • Journal of Archaeological Science, February 2013, Elsevier

    Dr Robert J Speakman

  11. Silo science and portable XRF in archaeology: a response to Frahm

    Article • Journal of Archaeological Science, February 2013, Elsevier

    Dr Robert J Speakman

  12. Investigating Obsidian Procurement at Integration Period (ca. AD 700-1500)TolaSites in Highland Northern Ecuador via Portable X-ray Fluorescence (pXRF)

    Article • January 2013, American Chemical Society (ACS)

    Dr Robert J Speakman

  13. Assessing urban soil pollution in the cities of Zacatecas and Guadalupe, Mexico by instrumental neutron activation analysis

    Article • Microchemical Journal, July 2012, Elsevier

    Dr Robert J Speakman

  14. Additional analysis of dendrochemical data of Fallon, Nevada

    Article • Chemico-Biological Interactions, April 2012, Elsevier

    Dr Robert J Speakman

  15. Characterization of surface decorations in Prehispanic archaeological ceramics by Raman spectroscopy, FTIR, XRD and XRF

    Article • Vibrational Spectroscopy, January 2012, Elsevier

    Dr Robert J Speakman

  16. Sourcing ceramics with portable XRF spectrometers? A comparison with INAA using Mimbres pottery from the American Southwest

    Article • Journal of Archaeological Science, December 2011, Elsevier

    Dr Robert J Speakman

  17. Earliest art in the Americas: incised image of a proboscidean on a mineralized extinct animal bone from Vero Beach, Florida

    Article • Journal of Archaeological Science, November 2011, Elsevier

    Dr Robert J Speakman

  18. Fracturing of the Panamanian Isthmus during initial collision with South America

    Article • Geology, October 2011, Geological Society of America

    Dr Robert J Speakman

  19. Assessing sediment pollution from the Julian Adame-Alatorre dam by instrumental neutron activation analysis

    Article • Microchemical Journal, September 2011, Elsevier

    Dr Robert J Speakman

  20. Romita pottery revisited: a reassessment of the provenance of ceramics from Colonial Mexico by LA-MC-ICP-MS

    Article • Journal of Archaeological Science, November 2010, Elsevier

    Dr Robert J Speakman

  21. Technological Features of Colonial Glazed Pottery from el Convento de Santo Domingo (Antigua, Guatemala). Similarities and Differences Between Colonial and Spanish pottery

    Article • October 2010, Springer Science + Business Media

    Dr Robert J Speakman

  22. Chemical characterization of tin-lead glazed ceramics from Aragon (Spain) by neutron activation analysis

    Article • Radiochimica Acta, August 2010, De Gruyter

    Dr Robert J Speakman

  23. Macusani obsidian from southern Peru: A characterization of its elemental composition with a demonstration of its ancient use

    Article • Journal of Archaeological Science, March 2010, Elsevier

    Dr Robert J Speakman

  24. The Effect of Cyclododecane on Carbon-14 Dating of Archaeological Materials

    Article • Journal of the American Institute for Conservation, December 2009, Taylor & Francis

    Dr Robert J Speakman

  25. Ancient social landscapes of northwestern Argentina: preliminary results of an integrated approach to obsidian and ceramic provenance

    Article • Journal of Archaeological Science, September 2009, Elsevier

    Dr Robert J Speakman, Dr Marisa Lazzari

  26. CHEMICAL CHARACTERIZATION OF TIN‐LEAD GLAZED POTTERY FROM THE IBERIAN PENINSULA AND THE CANARY ISLANDS: INITIAL STEPS TOWARD A BETTER UNDERSTANDING OF SPANISH COLONIAL POTTERY IN THE AMERICAS*

    Article • Archaeometry, July 2009, Wiley

    Dr Robert J Speakman

  27. Initial source evaluation of archaeological obsidian from the Kuril Islands of the Russian Far East using portable XRF

    Article • Journal of Archaeological Science, June 2009, Elsevier

    Dr Robert J Speakman

  28. Preliminary study of a Georgia O'Keeffe pastel drawing using XRF and μXRD

    Article • Powder Diffraction, June 2009, Cambridge University Press

    Dr Robert J Speakman

  29. Neutron Activation Analysis of Ceramics from Five Archaeological Sites in Antigua, West Indies

    Article • Bulletin of the Peabody Museum of Natural History, April 2009, Bulletin of the Peabody Museum of Natural History

    Dr Robert J Speakman

  30. Characterization of pottery from Cerro de Las Ventanas, Zacatecas, México

    Article • Radiochimica Acta, January 2009, De Gruyter

    Dr Robert J Speakman

  31. Multiple Dendrochronological Signals Indicate the Eruption of ParíCutin Volcano, Michoacán, Mexico

    Article • Tree-Ring Research, December 2008, Tree-Ring Society

    Dr Robert J Speakman

  32. Ceramic production, consumption and exchange in the Banda area, Ghana: Insights from compositional analyses

    Article • Journal of Anthropological Archaeology, September 2008, Elsevier

    Dr Robert J Speakman

  33. Obsidian use at the Ushki Lake complex, Kamchatka Peninsula (Northeastern Siberia): implications for terminal Pleistocene and early Holocene human migrations in Beringia

    Article • Journal of Archaeological Science, August 2008, Elsevier

    Dr Robert J Speakman

  34. Exchange patterns, boundary formation, and sociopolitical change in Late Bronze Age Southern Caucasia: preliminary results from a pottery provenance study in northwestern Armenia

    Article • Journal of Archaeological Science, June 2008, Elsevier

    Dr Robert J Speakman

  35. C-1 XRF and XRD Analysis of Converted Lead Pigment on a Georgia O'Keefe Pastel Drawing

    Article • Powder Diffraction, June 2008, Cambridge University Press

    Dr Robert J Speakman

  36. Tungsten and Cobalt: Sheppard et al. Respond

    Article • Environmental Health Perspectives, May 2008, Environmental Health Perspectives

    Dr Robert J Speakman

  37. Chemical characterization of majolica from 14th–18th century production centers on the Iberian Peninsula: a preliminary neutron activation study

    Article • Journal of Archaeological Science, February 2008, Elsevier

    Dr Robert J Speakman

  38. Comparison of XRF and PXRF for analysis of archaeological obsidian from southern Perú

    Article • Journal of Archaeological Science, December 2007, Elsevier

    Dr Robert J Speakman

  39. Characterization of 15th-16th Century Majolica Pottery Found on the Canary Islands

    Article • August 2007, American Chemical Society (ACS)

    Dr Robert J Speakman

  40. Sources of Archaeological Obsidian in Peru: Descriptions and Geochemistry

    Article • August 2007, American Chemical Society (ACS)

    Dr Robert J Speakman

  41. Laser Ablation—Inductively Coupled Plasma—Mass Spectrometry Analysis Applied to the Characterization of Peruvian Wari Ceramics

    Article • August 2007, American Chemical Society (ACS)

    Dr Robert J Speakman

  42. Instrumental Neutron Activation Analysis of Ochre Artifacts from Jiskairumoko, Peru

    Article • August 2007, American Chemical Society (ACS)

    Dr Robert J Speakman

  43. Analysis of Historic Latter-day Saint Pottery Glazes by Laser Ablation—Inductively Coupled Plasma—Mass Spectrometry

    Article • August 2007, American Chemical Society (ACS)

    Dr Robert J Speakman

  44. The Technology of Mesopotamian Ceramic Glazes

    Article • August 2007, American Chemical Society (ACS)

    Dr Robert J Speakman

  45. Feasibility of Field-Portable XRF to Identify Obsidian Sources in Central Petén, Guatemala

    Article • August 2007, American Chemical Society (ACS)

    Dr Robert J Speakman

  46. Archaeological Chemistry

    Article • August 2007

    Dr Robert J Speakman

  47. Preface

    Article • August 2007, American Chemical Society (ACS)

    Dr Robert J Speakman

  48. Selected Applications of Laser Ablation Inductively Coupled Plasma—Mass Spectrometry to Archaeological Research

    Article • August 2007, American Chemical Society (ACS)

    Dr Robert J Speakman

  49. Source Analysis of Central Plains Tradition Pottery Using Neutron Activation Analysis: Feasibility and First Results

    Article • Plains Anthropologist, August 2007, Taylor & Francis

    Dr Robert J Speakman

  50. ARCHAEOMETRY AT THE UNIVERSITY OF MISSOURI RESEARCH REACTOR AND THE PROVENANCE OF OBSIDIAN ARTEFACTS IN NORTH AMERICA

    Article • Archaeometry, May 2007, Wiley

    Dr Robert J Speakman

  51. ACKNOWLEDGING FIFTY YEARS OF NEUTRON ACTIVATION ANALYSIS IN ARCHAEOLOGY

    Article • Archaeometry, May 2007, Wiley

    Dr Robert J Speakman

  52. Spatial patterns of tungsten and cobalt in surface dust of Fallon, Nevada

    Article • Environmental Geochemistry and Health, March 2007, Springer Science + Business Media

    Dr Robert J Speakman

  53. Sourcing the Palygorskite Used in Maya Blue: A Pilot Study Comparing the Results of INAA and LA-ICP-MS

    Article • Latin American Antiquity, March 2007, JSTOR

    Dr Robert J Speakman, Dr Dean E. Arnold

  54. Inter-Regional and Intra-Regional Scale Compositional Variability in Pottery from South-Central Veracruz, Mexico

    Article • Latin American Antiquity, March 2007, JSTOR

    Dr Robert J Speakman

  55. Temporal Variability of Tungsten and Cobalt in Fallon, Nevada

    Article • Environmental Health Perspectives, February 2007, Environmental Health Perspectives

    Dr Robert J Speakman

  56. A NEW DATING METHOD FOR HIGH‐CALCIUM ARCHAEOLOGICAL GLASSES BASED UPON SURFACE‐WATER DIFFUSION: PRELIMINARY CALIBRATIONS AND PROCEDURES*

    Article • Archaeometry, February 2007, Wiley

    Dr Robert J Speakman

  57. Obsidian Subsources Utilized at Sites in Southern Sardinia (Italy)

    Article • MRS Proceedings, January 2007, Springer Science + Business Media

    Dr Robert J Speakman

  58. Multiple Environmental Monitoring Techniques for Assessing Spatial Patterns of Airborne Tungsten

    Article • Environmental Science & Technology, December 2006, American Chemical Society (ACS)

    Dr Robert J Speakman

  59. Using Lichen Chemistry to Assess Airborne Tungsten and Cobalt in Fallon, Nevada

    Article • Environmental Monitoring and Assessment, November 2006, Springer Science + Business Media

    Dr Robert J Speakman

  60. Reply to comment on “Elevated tungsten and cobalt in airborne particulates in Fallon, Nevada: Possible implications for the childhood leukemia cluster”, by Blasland, Bouck & Lee, Inc.

    Article • Applied Geochemistry, June 2006, Elsevier

    Dr Robert J Speakman

  61. Testing technological practices: neutron activation analysis of neolithic ceramics from Valencia, Spain

    Article • Journal of Archaeological Science, May 2006, Elsevier

    Dr Robert J Speakman, Dr Sarah B McClure

  62. Reply to comment on “Elevated tungsten and cobalt in airborne particulates in Fallon, Nevada: Possible implications for the childhood leukemia cluster”, by R. Seiler

    Article • Applied Geochemistry, April 2006, Elsevier

    Dr Robert J Speakman

  63. The Effects of Erosion on Archaeological Sites along the Upper Oahe Reservoir, South Dakota

    Article • North American Archaeologist, January 2006, SAGE Publications

    Dr Robert J Speakman

  64. Elevated tungsten and cobalt in airborne particulates in Fallon, Nevada: Possible implications for the childhood leukemia cluster

    Article • Applied Geochemistry, January 2006, Elsevier

    Dr Robert J Speakman

  65. Characterizing the Stoneware "Dragon Jars" in the Guthe Collection: Chemical, Decorative, and Formal Patterning

    Article • Asian Perspectives, January 2006, Project Muse

    Dr Robert J Speakman

  66. An Initial Assessment of Prehistoric Ceramic Production and Exchange in Northern Yoruba, North Central Nigeria: Results of Ceramic Compositional Analysis

    Article • African Archaeological Review, September 2005, Springer Science + Business Media

    Dr Robert J Speakman

  67. Elymian regional interaction in Iron Age western Sicily: a preliminary neutron activation study of incised/impressed tablewares

    Article • Journal of Archaeological Science, May 2005, Elsevier

    Dr Robert J Speakman

  68. CHEMICAL AND MINERALOGICAL CHARACTERIZATION OF SASANIAN AND EARLY ISLAMIC GLAZED CERAMICS FROM THE DEH LURAN PLAIN, SOUTHWESTERN IRAN*

    Article • Archaeometry, November 2004, Wiley

    Dr Robert J Speakman

  69. Instrumental Neutron Activation Analysis of Pottery from the George C. Davis (41Ce19) Site, Texas

    Article • North American Archaeologist, April 2004, SAGE Publications

    Dr Robert J Speakman

  70. Characterization of Maya pottery by INAA and ICP-MS

    Article • Journal of Radioanalytical and Nuclear Chemistry, January 2004, Springer Science + Business Media

    Dr Robert J Speakman

  71. Neutron activation analysis of Urartian pottery from eastern Anatolia

    Article • Journal of Radioanalytical and Nuclear Chemistry, January 2004, Springer Science + Business Media

    Dr Robert J Speakman

  72. Characterization of Archaeological Materials by Laser Ablation—Inductively Coupled Plasma—Mass Spectrometry

    Article • August 2002, American Chemical Society (ACS)

    Dr Robert J Speakman

  73. Evaluation of Painted Pottery from the Mesa Verde Region Using Laser Ablation-Inductively Coupled Plasma-Mass Spectrometry (LA-ICP-MS)

    Article • American Antiquity, January 2002, JSTOR

    Dr Robert J Speakman