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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
Identifier
http://data.bgs.ac.uk/id/dataHolding/13608306
Originator
  University College London - Prof David Dobson ( Professor of Earth Materials )
Kathleen Lonsdale Building, Gower Street , London , WC1E 6BT ,
Originator
  University College London - Longian Xie
Originator
  University College London - Fang Xu
Originator
  University of Oxford - Katharina Marquardt
Distributor
  British Geological Survey - Enquiries
Point of contact
  British Geological Survey - Enquiries
Maintenance and update frequency
notApplicable notApplicable
GEMET - INSPIRE themes, version 1.0
  • Geology
BGS Thesaurus of Geosciences
  • Deep seismic surveys
  • Basalt
  • MORB
  • Garnetite
  • NGDC Deposited Data
dataCentre
  • NGDC Deposited Data
Keywords
  • NERC_DDC
Access constraints
otherRestrictions Other restrictions
Other constraints
licenceOGL
Other constraints
Available under the Open Government Licence subject to the following acknowledgement accompanying the reproduced NERC materials "Contains NERC materials ©NERC [year]"
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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  • txt ()

Distributor
  British Geological Survey - Enquiries
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
 
 

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