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AMS Radiocarbon Dates from Prehispanic Fortifications in the Huaura Valley, Central Coast of Perú

  • Margaret Brown Vega (a1), Nathan M Craig (a2), Brendan J Culleton (a2), Douglas J Kennett (a2) and Gerbert Asencios Lindo (a3)...


In this paper, we report 11 AMS radiocarbon dates from 8 Prehispanic fortifications located in the Huaura Valley, central coast of Perú. Small fragments of organic material embedded in preserved mud mortar in architecture, and samples from construction layers exposed by looter's holes were used to date architectural features without undertaking extensive excavations. These dates contribute toward refining the chronology of fort building in the valley, and provide a test for assumptions about temporal change and architectural style. The results indicate that fortifications date to at least 3 periods. These data provide a starting point for exploring the occurrence of warfare through time on a regional scale.


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Al-Bashaireh, K, Hodgins, GWL. 2011. AMS 14C dating of organic inclusions of plaster and mortar from different structures at Petra-Jordan. Journal of Archaeological Science 38(3):485–9.
Allen, MW. 2008. Hillforts and the cycling of Maori chiefdoms: Do good fences make good neighbors? In: Railey, JA, Reycraft, RM, editors. Global Perspectives on Collapse of Complex Systems. Albuquerque: Maxwell Museum of Anthropology. p 6581.
Arkush, EN, Stanish, C. 2005. Interpreting conflict in the ancient Andes. Current Anthropology 46(1):328.
Arkush, EN. 2006. Collapse, conflict, conquest: the transformation of warfare in the Late Prehispanic Andean Highlands. In: Arkush, EN, Allen, MW, editors. The Archaeology of Warfare: Prehistories of Raiding and Conquest. Gainesville: University Press of Florida. p 286335.
Arkush, EN. 2011. Hillforts of the Ancient Andes: Colla Warfare, Society, and Landscape. Gainesville: University Press of Florida.
Braje, TJ, Erlandson, JM, Rick, TC. 2005. Reassessing human settlement on the south coast of San Miguel Island, California: the use of 14C dating as a reconnaissance tool. Radiocarbon 47(1):11–9.
Bronk Ramsey, C. 2009. Bayesian analysis of radiocarbon dates. Radiocarbon 51(1):337–6.
Brown Vega, M. 2008. War and social life in Prehispanic Perú: ritual, defense, and communities at the fortress of Acaray, Huaura Valley [PhD dissertation]. Urbana-Champaign: University of Illinois at Urbana-Champaign.
Brown Vega, M. 2009. Conflict in the Early Horizon and Late Intermediate Period: new dates from the fortress of Acaray, Huaura Valley, Perú. Current Anthropology 50(2):255–6.
Brown Vega, M. 2010. Regional patterns of fortification and single forts: evaluating the articulation of regional sociopolitical dynamics with localized phenomena. In: Cutright, R, Hurtado Lopez, E, Martin, A, editors. Comparative Perspectives on the Archaeology of Coastal South America. Pittsburgh: Center for Comparative Archaeology, University of Pittsburgh; Quito: Fondo Editorial, Pontificia Universidad Católica del Perú; Lima: Ministerio de Cultura del Ecuador. p 169–8.
Brown Vega, M, Craig, N, Asencios Lindo, G. 2011. Ground truthing of remotely identified fortifications on the central coast of Perú. Journal of Archaeological Science 38(7):1680–9.
Chamussy, V. 2009. Les débuts de la guerre institutionnalisée dans l'Aire Andine Centrale: versla formation de l'État, du Format if à la Période Intermédiaire Ancienne. BAR International Series 2017. Oxford: Archacopress.
Covey, RA. 2008. Multircgional perspectives on the archaeology of the Andes during the Late Intermediate period (c. A.D. 1000–1400). Journal of Archaeological Research 16(3):287338.
Daggett, R. 1987. Towards the development of the state on the north central coast of Peru. In: Haas, J, Pozorski, S, Pozorski, T, editors. The Origins and Development of the Andean State. New York: Cambridge University Press. p 7082.
Erlandson, JM, Moss, ML. 1999. The systematic use of radiocarbon dating in archaeological surveys in coastal and other crosional environments. American Antiquity 64(3):431–4.
Field, JS. 2008. Explaining fortifications in Indo-Pacific prehistory. Archaeology in Oceania 43:110.
Field, JS, Lape, PV. 2010. Palcoclimates and the emergence of fortifications in the tropical Pacific Islands. Journal of Anthropological Archaeology 29(1):113–2.
Ghezzi, I. 2006. Religious warfare at Chankillo. In: Isbcll, W, Silverman, H, editors. Andean Archaeology III: North and South. New York: Springer. p 6784.
Ghezzi, I. 2007. La naturaleza de la guerra prehispánica temprana: la perspectiva desde Chankillo. Revista Andina 44:199226.
Ghezzi, I, Ruggles, C. 2007. Chankillo: a 2300-year-old solar observatory in coastal Peru. Science 315(5816):1239–43.
Giersz, M, Prązdka, P. 2009. Cronología cultural y patrones de asentamiento prehispánico en el Valle del Río Culebras, costa norcentral del Perú. ARKEOS: Revista Electrónica de Arqueología PUCP 4(11):140.
Guilderson, TP, Reimer, PJ, Brown, TA. 2005. The boon and banc of radiocarbon dating. Science 307(5708):362–4.
Keeley, LH, Fontana, M, Quick, R. 2007. Baffles and bastions: the universal features of fortifications. Journal of Archaeological Research 15(1):5595.
Kennett, DJ, Ingram, BL, Southon, JR, Wise, K. 2002. Differences in 14C age between stratigraphically associated charcoal and marine shell from the Archaic period site of Kilometer 4, southern Peru: old wood or old water? Radiocarbon 44(1):53–8.
Kennett, DJ, Anderson, A, Prebble, M, Conte, E, Southon, J. 2006. Prehistoric human impacts on Rapa, French Polynesia. Antiquity 80(308):340–5.
Kennett, DJ, Culleton, BJ, Anderson, A, Southon, J. 2012. A Bayesian AMS 14C chronology for the colonization and fortification of Rapa. In: Anderson, A, Kennett, DJ, editors. Taking the High Ground: The Archaeology of Rapa, a Fortified Island in Remote East Polynesia. Terra Australis: Australia National University Press.
Malainey, ME. 2011. A Consumer's Guide to Archaeological Science: Analytical Techniques. New York: Springer.
Martindale, A, Supernant, K. 2009. Quantifying the defensiveness of defended sites on the northwest coast of North America. Journal of Anthropological Archaeology 28(2):191204.
Mathews, JP. 2001. Radiocarbon dating of architectural mortar: a case study in the Maya region, Quintana Roo, Mexico. Journal of Field Archaeology 28(3–4):395400.
McCormac, FG, Hogg, AG, Blackwell, PG, Buck, CE, Higham, TFG, Reimer, PJ. 2004. SHCal04 Southern Hemisphere calibration 0–11.0 cal kyr BP. Radiocarbon 46(3):1087–92.
Menzel, D. 1977. The Archaeology of Ancient Peru and the Work of Max Uhle. Berkeley: R H Lowie Museum of Anthropology, University of California.
Nelson, K, Craig, N, Perales, M. 2010. Piecing together the middle: the Middle Horizon in the Norte Chico. In: Jennings, JD, editor. Beyond Wari Walls. Albuquerque: University of New Mexico Press. p 171–8.
Ogburn, DE. 2012. Reconceiving the chronology of Inca imperial expansion. Radiocarbon 54(2):219–3.
Parkinson, WA, Duffy, PR. 2007. Fortifications and enclosures in European prehistory: a cross-cultural perspective. Journal of Archaeological Research 15(2):97141.
Parsons, JR, Hastings, CM. 1988. The Late Intermediate Period. In: Keatinge, RW, editor. Peruvian Prehistory: An Overview of Pre-Inca and Inca Society. Cambridge: Cambridge University Press. p 190229.
Proulx, DA. 1985. An Analysis of the Early Cultural Sequence in the Nepeña Valley, Peru. Amherst: Department of Anthropology, University of Massachusetts.
Rech, JA. 2004. New uses for old laboratory techniques. Near Eastern Archaeology 67(4):212–9.
Rech, JA, Fischer, AA, Edwards, DR, Jull, AJT. 2003. Direct dating of plaster and mortar using AMS radiocarbon: a pilot project from Khirbet Qana, Israel. Antiquity 77(295):155–6.
Ruiz Estrada, A. 1999. Tesoros arqueológicos de Huacho. Hoyos, I, editor. Huacho: Ediciones Didacta.
Santos, GM, Southon, JR, Druffel-Rodriguez, K, Griffin, S, Mazon, M. 2004. Magnesium perchlorate as an alternative water trap in AMS graphite sample preparation: a report on sample preparation at the KCCAMS facility at the University of California, Irvine. Radiocarbon 46(1):165–7.
Santos, GM, Southon, JR, Griffin, S, Beaupre, SR, Druffel, ERM. 2007. Ultra small-mass AMS 14C sample preparation and analyses at KCCAMS/UCI Facility. Nuclear Instruments and Methods in Physics Research B 259(1):293302.
Schaepe, DM. 2006. Rock fortifications: archaeological insights into pre-contact warfare and sociopolitical organization among the Stó:lo of the Lower Fraser River Canyon, B.C. American Antiquity 71(4):671705.
Shady Solís, R, Ruiz Estrada, A. 1979. Evidence for interregional relationships during the Middle Horizon on the north-central coast of Peru. American Antiquity 44(4):676–8.
Stuiver, M, Polach, HA. 1977. Discussion: reporting of 14C data. Radiocarbon 19(3):355–6.
Stuiver, M, Reimer, PJ, Reimer, RW. 2005. CALIB 5.0 Radiocarbon Calibration [WWW software and documentation]. URL:
Topic, JR, Topic, TL. 1987. The archaeological investigation of Andean militarism: some cautionary observations. In: Haas, J, Pozorski, T, Pozorski, S, editors. The Origins and Development of the Andean State. Cambridge: Cambridge University Press. p 4755.
Tung, TA. 2007. Trauma and violence in the Wari Empire of the Peruvian Andes: warfare, raids, and ritual fights. American Journal of Physical Anthropology 133:941–5.
Wilson, DJ. 1983. The origins and development of complex Prehispanic society in the Lower Santa Valley, Peru: implications for theories of state origins. Journal of Anthropological Archaeology 2(3):209–7.
Wilson, DJ. 1987. Reconstructing patterns of early warfare in the Lower Santa Valley: new data on the role of conflict in the origins of complex north coast society. In: Haas, J, Pozorski, S, Pozorski, T, editors. Origins and Development of the Andean State. New York: Cambridge University Press. p 5669.
Wilson, DJ. 1988. Prehispanic Settlement Patterns in the Lower Santa Valley, Peru: A Regional Perspective on the Origins and Development of Complex North Coast Society. Washington, DC: Smithsonian Institution Press.
Wyrwa, AM, Goslar, T, Czernik, J. 2009. AMS 14C dating of Romanesque rotunda and stone buildings of a Medieval monastery in Łekno, Poland. Radiocarbon 51(2):471–8.

AMS Radiocarbon Dates from Prehispanic Fortifications in the Huaura Valley, Central Coast of Perú

  • Margaret Brown Vega (a1), Nathan M Craig (a2), Brendan J Culleton (a2), Douglas J Kennett (a2) and Gerbert Asencios Lindo (a3)...


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