Details of Award
NERC Reference : NER/B/S/2001/00284
Testing a new model for initiation of subduction in the western Pacific: 3He/4He analysis of Middle Eocene boninites.
Grant Award
- Principal Investigator:
- Professor CG Macpherson, Durham University, Earth Sciences
- Co-Investigator:
- Prof. RN Taylor, University of Southampton, Sch of Ocean and Earth Science
- Grant held at:
- Durham University, Earth Sciences
- Science Area:
- Earth
- Overall Classification:
- Earth
- ENRIs:
- Natural Resource Management
- Science Topics:
- Earth Resources
- Volcanic Processes
- Tectonic Processes
- Mantle & Core Processes
- Abstract:
- This proposal seeks to test the hypothesis that a mantle hotspot was responsible for generating boninite magmas in the Izu - Bonin - Mariana (IBM) arc during the middle Eocene. Reconstruction of the plate configuration at that time places the nascent IBM arc close to the location of the present Manus Basin, where a high 3He/4He hotspot has been identified through helium isotope data and tomographic imaging. This project will deliver: 3He/4He data for middle Eocene boninites to resolve the hotspot-present or hotspot-absent models for initiation of the IBM arc. Pb and O isotope ratios and U and Th concentration data to aid in constraining subduction and crustal contamination in the petrogenesis of these rocks. A framework for investigating Archean tectonics and volcanic massive sulphide deposits.
- NERC Reference:
- NER/B/S/2001/00284
- Grant Stage:
- Completed
- Scheme:
- Small Grants Pre FEC
- Grant Status:
- Closed
- Programme:
- Small Grants
This grant award has a total value of £16,843
FDAB - Financial Details (Award breakdown by headings)
| Total - T&S | Total - Other Costs |
|---|---|
| £4,362 | £12,481 |
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