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Log file, GSAS data files and diffraction patterns from synchrotron experiments on NaMnF3 (NERC grant NE/J009520/1)

Log file and GSAS data files for synchrotron study of NaMnF3. Diffraction patterns from synchrotron experiments on NaMnF3. NERC grant: Understanding the D' zone: novel fluoride analogues to MgSiO3 post perovskite NERC grant abstract: The thermal boundary layers of a convecting system control many aspects of its style of convection and thermo-chemical history. For the silicate Earth these boundary layers are the lithosphere, whose low temperature and high rigidity induces slab-style downwellings, and the D' region on the mantle side of the core-mantle-boundary (CMB). The D' region is the source of plume-style convection and regulates heat exchange from the core to the silicate Earth. The lower thermal boundary is made more complex by the existance of a phase transition in the most common mineral in the lower mantle (magnesium-silicate perovskite) which changes the properties of the D' region at the CMB. Unfortunately, most of these properties cannot be measured at the extreme pressures (120 GPa) of stabilisation of the post-perovskite phase. The best chance of constraining them is through a combination of measurements on low-pressure analogue materials (which have the same crystal structure but a different chemical composition) and ab initio simulations of both the analogue and natural systems. We have recently developed a set of ABF3 analogues whose properties are much more similar to MgSiO3 than are those of the CaBO3 analogues currently in use. We propose, therefore, to use these improved fluoride analogues to determine the properties of post-perovskite which control the dynamics of D' (phase diagram, pressure-temperature-volume relations, viscosity, slip systems and thermal diffusivity). These measurements will allow models to be developed which accurately predict the behaviour of the lower thermal boundary layer of the mantle. This will place coinstraints on (1) the heat budget, dynamo power and start of crystallisation of the inner core, (2)the vigour of plumes, (3) the ratio of underside heating to internal heating in the mantle and, (4) the radioactive element budget of the silicate Earth.

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Identification info

Metadata Language
English (en)
Dataset Reference Date ()
2015-08
Identifier

http://data.bgs.ac.uk/id/dataHolding/13607083

 

Earth Sciences, University College London

-

Prof David Dobson

(

Professor of Earth Materials

)

Kathleen Lonsdale Building, Gower Street

,

London

,

WC1E 6BT

,
Maintenance and update frequency
notApplicable
GEMET - INSPIRE themes
  • Geology
BGS Thesaurus of Geosciences
  • Earth mantle

  • Perovskite

Keywords
  • NERC_DDC

Limitations on Public Access
otherRestrictions
Other constraints
no limitations
Other constraints
The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.
Use constraints
otherRestrictions
Other constraints

The copyright of materials derived from the British Geological Survey's work is vested in the Natural Environment Research Council [NERC]. No part of this work may be reproduced or transmitted in any form or by any means, or stored in a retrieval system of any nature, without the prior permission of the copyright holder, via the BGS Intellectual Property Rights Manager. Use by customers of information provided by the BGS, is at the customer's own risk. In view of the disparate sources of information at BGS's disposal, including such material donated to BGS, that BGS accepts in good faith as being accurate, the Natural Environment Research Council (NERC) gives no warranty, expressed or implied, as to the quality or accuracy of the information supplied, or to the information's suitability for any use. NERC/BGS accepts no liability whatever in respect of loss, damage, injury or other occurence however caused.

Other constraints

The dataset is made available to external clients under BGS Digital Data Licence terms and conditions. Revert to the IPR Section (iprdigital@bgs.ac.uk) if further advice is required with regard to permitted usage. iprdigital@bgs.ac The dataset is made available to external clients under BGS Digital Data Licence terms and conditions. Revert to the IPR Section (iprdigital@bgs.ac.uk) if further advice is required with regard to permitted usage.

Topic category
  • Geoscientific information
End date
2015-08
 

Spatial Reference System

No information provided.

Distribution Information

Data format
Resource Locator
http://dx.doi.org/10.1007/s00269-014-0698-5
Resource Locator
http://www.bgs.ac.uk/services/ngdc/accessions/index.html#item72749
Resource Locator
http://www.bgs.ac.uk/services/ngdc/accessions/index.html#item72709
Resource Locator
http://dx.doi.org/10.1007/s00269-014-0698-5
Resource Locator
http://www.bgs.ac.uk/services/ngdc/accessions/index.html#item72749
Resource Locator
http://www.bgs.ac.uk/services/ngdc/accessions/index.html#item72709
 
Quality Scope
nonGeographicDataset
Other

non geographic dataset

Report

Dataset Reference Date ()
2011
Explanation

See the referenced specification

Degree

Report

Dataset Reference Date ()
2010-12-08
Explanation

See http://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=OJ:L:2010:323:0011:0102:EN:PDF

Degree
Statement

No lineage information provided, see publication http://dx.doi.org/10.1007/s00269-014-0698-5

Metadata

File identifier
46d46d2d-2429-24e9-e054-002128a47908 XML
Metadata Language
English (en)
Resource type
nonGeographicDataset
Hierarchy level name

non geographic dataset

Metadata Date
2023-01-23
Metadata standard name
UK GEMINI
Metadata standard version

2.3

 

British Geological Survey


Environmental Science Centre,Keyworth

,

NOTTINGHAM

,

NOTTINGHAMSHIRE

,

NG12 5GG

,

United Kingdom

+44 115 936 3100
 
 

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