Dr Jamie Lewis
MSci, PhD
Current positions
Research Fellow
School of Earth Sciences
Contact
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Research interests
I graduated from the University of Bristol in 2010 with an MSci in Archaeological Sciences and then continued my studies in the University completing my PhD (Earth Sciences) on strontium diagenesis in archaeological enamel in 2015. I subsequently worked in industry for Thermo-Fisher Scientific as a research and development scientist in mass spectrometry and was part of team that developed the prototype collision cell MC-ICPMS, Proteus, as a collaboration between the Bristol Isotope Group and Thermo-Fisher Scientific Bremen. Since returning to the Bristol I have taken a post which is split between the Organic Geochemistry Unit and the Bristol Isotope Group.
Research interests
My broad interests are in applying novel and existing geochemical and isotopic techniques to archaeological populations to attempt to understand past environments and lifeways. My PhD research focused on the strontium isotope method used by archaeologists to investigate mobility and the extent to which diagenetic alteration, the uptake of strontium from the burial environment, can affect the results given by this method. I have also undertaken work assessing the potential for the stable strontium isotope ratio (δ88Sr) to investigate ancient diets.
I also have a keen interest in the analytical techniques used to measure the various geochemical and isotopic proxies that are utilised in the discipline and a special interest in novel instrumentation and development of new analytical methods.
During my PhD I used TIMS and (MC)-ICPMS for strontium concentration and isotope ratio determinations on teeth and bones both by solution and laser ablation and also developed an improved method for determining strontium isotope ratios by laser ablation. Following my PhD I was part of the research and development team that helped to construct the “Proteus” collision cell MC-ICPMS which combines a quadrupole mass spectrometer and collision cell with a sector field multi-collector mass spectrometer.
In my current post with the Organic Geochemistry Unit I am continuing to investigate ancient human lifeways and, specifically, subsistence practices, using light isotope techniques. This will focus on compound specific δ13C and δ15N on individual amino-acids using LC-IRMS and GC-C-IRMS. The aim of the project is to calibrate the Δ13CGly-Phe proxy and investigate δ15N fractionation with trophic level using a set of pig tissues from a modern feeding experiment.
Projects and supervisions
Research projects
Future Pasts: Pastoral archaeology to inform the future of sustainable farming
Role
Co-Investigator
Description
The challenge:
Globally, around 200 million people are practising pastoral farming. Research on transhumance communities in Southeast Europe has indicated that as the climate becomes warmer the pastures are becoming more…Managing organisational unit
Department of Anthropology and ArchaeologyDates
01/10/2022 to 30/09/2023
Untold Stories: Challenging research behaviours for studying the past
Role
Co-Investigator
Description
Untold Stories challenges current research prejudices regarding how certain groups of individuals in the past remain underrepresented in historical and social research. The project aims to tell their stories using…Managing organisational unit
Department of Anthropology and ArchaeologyDates
21/03/2022 to 31/07/2022
Publications
Recent publications
20/12/2024Detrital K-feldspar as a novel archive of continental crustal evolution using coupled in situ Rb–Sr dating and Pb isotope analysis
Chemical Geology
Precise and Accurate Mass-independent Chromium Isotope Measurement by Total Evaporation Mode on Thermal Ionization Mass Spectrometry (TE-TIMS) at 200 ng Level
Atomic Spectroscopy
Multi-proxy investigation of the post-evaporitic succession of the Piedmont Basin (Pollenzo section, NW Italy)
Palaeogeography Palaeoclimatology Palaeoecology
In situ Rb-Sr dating by collision cell, multicollection inductively-coupled plasma mass-spectrometry with pre-cell mass-filter, (CC-MC-ICPMS/MS)
Journal of Analytical Atomic Spectrometry
Project Vienna
Analytical Chemistry