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Atomic and Laser Physics
Credit: Jack Hobhouse

Prof Christopher Ramsey

Professor of Archaeological Science

Research theme

  • Accelerator physics
  • Climate physics
  • Instrumentation

Sub department

  • Atomic and Laser Physics
christopher.ramsey@physics.ox.ac.uk
Telephone: 01865285215
School of Archaeology
  • About
  • Publications

A large mass grave from the Early Iron Age indicates selective violence towards women and children in the Carpathian Basin.

Nature human behaviour (2026)

Authors:

Linda Fibiger, Miren Iraeta-Orbegozo, Jovan Koledin, Jason E Laffoon, Cheryl A Makarewicz, Dorothea Mylopotamitaki, Caroline Bruyere, Thomas Booth, Christopher Bronk Ramsey, Robert Layfield, Lucas Anchieri, Yuejiao Huang, Anna Kjær Knudsen, Jonas Niemann, Darko Radmanović, Neil J Oldham, Barry Shaw, Saoirse Tracy, Sara Nylund, J Stephen Daly, Christine Winter-Schuh, David van Acken, Harald Ringbauer, Alissa Mittnik, Jazmin Ramos-Madrigal, Hannes Schroeder, Barry Molloy

Abstract:

Narratives about the motivations and conditions for mass violence as a persistent feature of conflict throughout human history have evolved in complexity and materiality. Victims of these events are key for understanding the evolution and transformative power of violent behaviour as it developed from simple intergroup conflict to more strategic mass violence. Here we present the results of a bioarchaeological study of 77 and biomolecular analysis of 25 individuals from a ninth-century BCE mass grave from Gomolava in the Carpathian Basin, Southeast Europe. The site is located at the interface of complex sociospatial relations, divergent cultural traditions and values, and competing ideologies of landscape use. We show that excessive lethal violence enacted mostly on women and children suggests a selective demographic bias. The people buried together shared few, even distant, genetic relationships, and so their killing presents striking evidence for an episode of cross-regional conflict and an underlying aggressive shift in power, violence and gender relations in the region. Gomolava provides evidence consistent with deliberate annihilation of select sections of a regional population as a motivation for mass violence behaviour in later prehistoric Europe. It also shines new light on the socioeconomic agency and importance of women and young individuals in later European prehistory.
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Medieval settlement chronologies: reflections on an extensive radiocarbon dating programme

Medieval Archaeology Taylor & Francis 69:2 (2025) 328-346

Authors:

Mark McKerracher, Helena Hamerow, Christopher Bronk Ramsey

Abstract:

The Feeding Anglo-Saxon England (FeedSax) project applied scientific methods to bioarchaeological remains, in order to shed new light on medieval English agriculture. The methodology included an extensive radiocarbon dating programme which, besides helping to date developments in farming at selected case study sites, proved informative in its own right. This paper discusses the key implications of this programme’s results, with regard to the general problems of dating medieval settlement phases. First, it has allowed us to devise a new ‘universal’ chronological schema which aligns conventional phases with the precision currently attainable from calibrated radiocarbon dates. Second, it has revealed frequent discrepancies between the radiocarbon dates of organic remains and their original phasing — usually based upon associated ceramics — often resulting in chronological refinements or revisions, and sometimes revealing hitherto unrecognised periods of activity. In particular, the results highlight that ceramic-based phasing often underestimates the age of organic remains.
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Preface: Proceedings of the 3rd Radiocarbon and Diet Conference

Radiocarbon: An International Journal of Cosmogenic Isotope Research Cambridge University Press 67:5 (2025) 871-874

Authors:

Rachel Wood, Amy Styring, Christopher Bronk Ramsey, David Chivall, Bethan Linscott, Peter Ditchfield, Lorena Becerra Valdivia, Rick Schulting
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Establishing a Chronology for Roman and Post-Roman Stanwick, Northamptonshire

Britannia Cambridge University Press (CUP) (2025) 1-45

Authors:

Robin Fleming, Vicky Crosby, Alex Bayliss, Simon Mays, Christopher Bronk Ramsey, Elaine Dunbar, HEM Cool, Angela Wardle

Abstract:

Abstract The programme of radiocarbon dating undertaken at Stanwick, Northamptonshire, demonstrates the value of scientific dating of Romano-British sites, including those with good pottery sequences and large numbers of datable coins and other finds. It has refined and clarified the chronology and phasing of the site, particularly in its final phase of occupation. It confirmed some of our original dating of the human burials, and showed other dates were significantly wrong. It also addresses issues relating to the calibration of radiocarbon dates and dietary isotopes in the period. This has enabled us to identify activities, material culture and burial practices current at Stanwick and elsewhere in the immediate post-Roman period.
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Redefining SW Amazonian chronologies and pottery use at the Teotônio site

Journal of Archaeological Science Elsevier BV 183 (2025) 106393

Authors:

McKenzie R Bentley, Lorena Becerra-Valdivia, Thiago Kater, Laura Pereira Furquim, Jennifer Watling, Fernando Almeida, Kelly Brandão, David Chivall, Natálya Cristiana Pereira Pinheiro, Bethan Linscott, Qian Ma, Guilherme Mongeló, Myrtle P Shock, André Oliveira Sawakuchi, Francis Mayle, Eduardo Góes Neves, Christopher Bronk Ramsey
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