Objective
The timing of Earth's core formation and inner core crystallization are among the most fundamental questions in Earth science. We propose to address these two key issues in core evolution as physical models differ greatly in their predictions. As was the case in determining the age of the Earth, isotope chronometry is required to resolve these pivotal debates. The rapid development of mass spectrometry has made accessible the appropriate Hf-W, Pt-Os and Re-Os systems to study core processes. We shall overcome the problem of applying these novel tools to material as inaccessible as the core by analyzing mantle derived material that is believed to have interacted with the core. The estimated degree of interaction is sufficient to resolve the W-isotope anomalies that would result if the core formed early and so this provides the most direct approach to this longstanding question. The lack of a W-isotope anomaly would strengthen a recent proposal that core formation was late. Second, the onset of inner core crystallization will be addressed by combining W- and Os-isotopes. The Os composition of the outer core is dependent on the timing of inner core crystallization, whereas correlated W-isotopes will indicate that the Os-signature reflects core differentiation. If Os-anomalies are present in Archean (>25 Ga) rocks, then this is evidence for even earlier onset of inner core crystallization. Published data already hints to this conclusion although it needs to be confirmed.
Fields of science (EuroSciVoc)
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
- natural sciences chemical sciences analytical chemistry mass spectrometry
- natural sciences earth and related environmental sciences
You need to log in or register to use this function
Programme(s)
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
Topic(s)
Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
Data not available
Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
Call for proposal
Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
Data not available
Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
Funding Scheme
Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
Coordinator
BS8 1RJ BRISTOL, CLIFTON
United Kingdom
The total costs incurred by this organisation to participate in the project, including direct and indirect costs. This amount is a subset of the overall project budget.