Details of Award
NERC Reference : NER/B/S/2003/00284
Enhanced accuracy and precision of equivalent dose estimates in quartz optical dating via pulsed and elevated temperature laboratory irradiation.
Grant Award
- Principal Investigator:
- Dr S Stokes, University of Oxford, Geography - SoGE
- Co-Investigator:
- Professor R Bailey, University of Oxford, Geography - SoGE
- Grant held at:
- University of Oxford, Geography - SoGE
- Science Area:
- Earth
- Overall Classification:
- Earth
- ENRIs:
- Natural Resource Management
- Global Change
- Environmental Risks and Hazards
- Science Topics:
- Science-Based Archaeology
- Sediment/Sedimentary Processes
- Quaternary Science
- Climate & Climate Change
- Abstract:
- Numerical modelling and Quartz SAR optical ages for old samples (>c. 30-40ka, - beyond 14C age range) provide evidence for a flaw (dose rate effect) in a key assumption of the optical dating method, resulting in systematic inaccuracy. The effect can be circumvented by modifying equipment and dating procedures. We seek support to (1) purchase an under-irradiator heater and an X-ray generator to systematically investigate raised temperature and high dose rate irradiation, (2) Use the equipment to analyse independently-dated Chinese loess samples to confirm the effect, (3) Develop SAR-based De evaluation methods to confirm model data and initial observations, and (4) Refine optical dating methodologies via pulsing of irradiation and heat treatments to produce high precision, accurate ages. The data will be of relevance to all luminescence-based methods of age determination.
- NERC Reference:
- NER/B/S/2003/00284
- Grant Stage:
- Completed
- Scheme:
- Small Grants Pre FEC
- Grant Status:
- Closed
- Programme:
- Small Grants
This grant award has a total value of £28,273
FDAB - Financial Details (Award breakdown by headings)
| Total - T&S | Total - Other Costs | Total - Equipment |
|---|---|---|
| £3,014 | £3,524 | £21,735 |
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