Volcanic ashes and geochronology

A substantial portion of my research is dedicated to developing an accurate and precise chronology for the Late and Middle Pleistocene, particularly through the geochemical analysis and correlation of volcanic ashes (tephra), with additional emphases on the radiocarbon and Uranium-series methods for dating ostrich eggshell fragments.



2017 Lowe, D.J.; Pearce, N.J.G.; Kuehn, S.C.; Tryon, C.A.; Hayward, C. Correlating tephras and cryptotephras using compositional analyses and numerical and statistical methods: Review and evaluation. Quaternary Science Reviews 175:1-44pdf

2017 Blegen, N.; Faith, J.T.; Mant-Melville, A.; Peppe, D.J.; Tryon, C.A. The Middle Stone Age after 50,000 years ago: New evidence from the Late Pleistocene sediments of the Eastern Lake Victoria Basin, Western Kenya. Paleoanthropology 2017:139-169. pdf

2016 Blegen, N.; Brown, F.H.; Jicha, B.R.; Binetti, K.M.; Faith, J.T.; Ferraro, J.V.; Gathogo, P.; Richardson, J.L.; Tryon, C.A. The Menengai Tuff: A 36 ka widespread tephra and its chronological relevance to Late Pleistocene human evolution in Africa. Quaternary Science Reviews 152: 152-168pdf

2011 Watson, Judith; Tryon, Christian; Vicens, Anne. Faster and more accurate processing of samples for microtephrochronology. In Proceedings of the 37th International Symposium of Archaeometry, 12th-16th May 2008, Sienna, Italy. Turbanti-Memmi, I. ed. New York: Springer, pp. 509-513. pdf

2011 Tryon, Christian; Kuhn, Steven; Slimak, Ludovic; Logan, M. Amelia & Nur Balkan-Atlı. Scale in tephrostratigraphic correlation: An example from Turkish Pleistocene archaeological sites. Quaternary International 246:124-133. pdf

2009  Tryon, Christian; Logan, M. Amelia; Mouralis, Damase; Kuhn, Steve; Slimak, Ludovic & Nur Balkan-Atlı. Building a tephrostratigraphic framework for the Paleolithic of Central Anatolia, Turkey. Journal of Archaeological Science 36:637-652. pdf

2008 Tryon, Christian; Roach, Neil, & Amelia Logan. The Middle Stone Age of the northern Kenyan Rift: age and context of new archaeological sites from the Kapedo Tuffs. Journal of Human Evolution 55:652-664. pdf

2006 Tryon, Christian & Sally McBrearty. Tephrostratigraphy of the Bedded Tuff Member (Kapthurin Formation, Kenya) and the nature of archaeological change in the later Middle Pleistocene. Quaternary Research 65:492-507. pdf

2002 Tryon, Christian & Sally McBrearty. Tephrostratigraphy and the Acheulian to Middle Stone Age transition in the Kapthurin Formation, Kenya. Journal of Human Evolution 42:211-235. pdf