Experimental logs and analysis of olivine polymorphs and MORB (Mid-Ocean Ridge Basalt) composition garnetite samples recovered from high-pressure faulting experiments
Multi-anvil experiments were performed both in static and deformation geometries on olivine polymorphs and MORB (Mid-Ocean Ridge Basalt) -composition garnetite. Faults were induced by uniaxial compression in both garnetite and wadsleyite but only the garnetite showed evidence of thermal run away to melting. These results suggest that strain localisation by thermal feedback might be an important mechanism for triggering deep earthquakes in the crustal portion of subducted slabs in the deeper transition zone (~500-660 km depth).
Simple
- Date (Creation)
- 2024-09-26
Originator
University College London
-
Prof David Dobson
(
Professor of Earth Materials
)
Kathleen Lonsdale Building, Gower Street
,
London
,
WC1E 6BT
,
- Maintenance and update frequency
- notApplicable notApplicable
- GEMET - INSPIRE themes, version 1.0
- BGS Thesaurus of Geosciences
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- Deep seismic surveys
- Basalt
- MORB
- Garnetite
- NGDC Deposited Data
- dataCentre
- Keywords
-
- NERC_DDC
- Access constraints
- otherRestrictions Other restrictions
- Other constraints
- licenceOGL
- Use constraints
- otherRestrictions Other restrictions
- 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
- Available under the Open Government Licence subject to the following acknowledgement accompanying the reproduced NERC materials "Contains NERC materials ©NERC [year]"
- Metadata language
- EnglishEnglish
- Topic category
-
- Geoscientific information
- Begin date
- 2022-11-01
- End date
- 2024-10-12
Reference System Information
No information provided.
- Distribution format
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- OnLine resource
- Data
- OnLine resource
- Digital Object Identifier (DOI)
- Hierarchy level
- nonGeographicDataset Non geographic dataset
- Other
- non geographic dataset
Conformance result
- Date (Publication)
- 2011
- Explanation
- See the referenced specification
- Pass
- No
Conformance result
- Date (Publication)
- 2010-12-08
- Explanation
- See http://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=OJ:L:2010:323:0011:0102:EN:PDF
- Pass
- No
- Statement
- Samples were pre-synthesised at 15 GPa and 1473 K from synthetic glass of MORB composition, or from San-Carlos olivine, in platinum foil capsules. Recovered synthetic samples were prepared for deformation experiments using the deformation-T-cup press at UCL (see Hunt et al Rev. Sci. Instr. 85, 085103, 2014. doi: 10.1063/1.4891338). Ductile deformation was performed at 15 GPa and 1473 K in axial shortening mode. Further brittle faults were introduced into the sample during decompression. Recovered deformed sample was sectioned perpendicular to the faults and polished for SEM and chemical analyses at UCL. TEM foils were prepared and TEM analysis was performed at Imperial College.
- File identifier
- 26547278-cfd8-1491-e063-0937940a3eb3 XML
- Metadata language
- EnglishEnglish
- Hierarchy level
- nonGeographicDataset Non geographic dataset
- Hierarchy level name
- non geographic dataset
- Date stamp
- 2025-11-13
- Metadata standard name
- UK GEMINI
- Metadata standard version
- 2.3
Point of contact
British Geological Survey
Environmental Science Centre,Keyworth
,
NOTTINGHAM
,
NOTTINGHAMSHIRE
,
NG12 5GG
,
United Kingdom
+44 115 936 3100
- Dataset URI
- http://data.bgs.ac.uk/id/dataHolding/13608306
NERC Data Catalogue Service