Details of Award
NERC Reference : NER/B/S/2002/00254
Precise dating of low-temperature deformation: strain-fringe dating by 40Ar/39Ar laserprobe.
Grant Award
- Principal Investigator:
- Professor SP Kelley, The Open University, Environment, Earth & Ecosystems
- Co-Investigator:
- Professor JA Zalasiewicz, University of Leicester, Sch of Geog, Geol & the Environment
- Grant held at:
- The Open University, Environment, Earth & Ecosystems
- Science Area:
- Earth
- Overall Classification:
- Earth
- ENRIs:
- Global Change
- Environmental Risks and Hazards
- Science Topics:
- Sediment/Sedimentary Processes
- Tectonic Processes
- Abstract:
- Until now, rocks that deformed under low temperatures in upper-crustal levels have proven difficult to date by isotopic means, due to their fine-grain size and the mixture of detrital and new metamorphic minerals. We present a novel solution to this problem by performing Ar-Ar laserprobe dating on syn-kinematic white micas from a slate belt, which crystallised in the strain shadows around pyritised graptolites. This method circumvents problems encountered by all previous attempts to date low-temperature deformation, and a preliminary dataset from epizonal samples yields ages with remarkable precision (396?1.4 Ma 2 standard deviation). We propose to develop the technique further by experimenting with lower temperature (anchizonal) material, and by attempting to use these strain-fringes to extract strain rates, by performing in situ UV laserprobe Ar/Ar analyses across strain-fringes.
- NERC Reference:
- NER/B/S/2002/00254
- Grant Stage:
- Completed
- Scheme:
- Small Grants Pre FEC
- Grant Status:
- Closed
- Programme:
- Small Grants
This grant award has a total value of £29,936
FDAB - Financial Details (Award breakdown by headings)
| Total - T&S | Total - Staff | Total - Other Costs | Total - Indirect Costs |
|---|---|---|---|
| £253 | £15,301 | £7,344 | £7,038 |
If you need further help, please read the user guide.