Date ( Creation )

2019-09-26

Identifier

http://data.bgs.ac.uk/id/dataHolding/13607513

Maintenance and update frequency

notApplicable notApplicable

GEMET - INSPIRE themes

• Geology

BGS Thesaurus of Geosciences

• Volcanic ejecta , Peralkaline , Rift zone , Volcanism , Pyroclastic rocks , Electron microscopes

Keywords

• NERC_DDC

Access constraints

otherRestrictions Other restrictions

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

English English

Topic category

• Geoscientific information

Geographic identifier

ET

 

Date ( Revision )

2009

Geographic identifier

ETH

 

Date ( Revision )

2009

Geographic identifier

ETHIOPIA [id=692000]

 

Date ( Creation )

1979

Distribution format

• tiff files ()

OnLine resource

https://doi.org/10.1038/s41467-019-09947-8  

OnLine resource

https://www.bgs.ac.uk/services/ngdc/accessions/index.html#item130145  

Hierarchy level

dataset Dataset

Other

dataset

Statement

Secondary electron backscatter analysis was carried out using the Carl Zeiss SIGMA HD VP Field Emission SEM at the University of Edinburgh . X-ray microtomography was undertaken using an in-house constructed XCT scanner at the University of Edinburgh. Clasts were measured and the X-ray source-sample distance was adapted for each clast to ensure a whole-clast analysis whilst attaining an optimum resolution. Each sample was rotated around 180° and a series of exposures taken. These images were reconstructed and corrected for beam hardening using Octopus v8.7. For qualitative 3D analysis of the internal structure, these images were loaded into Avizo 9 and a threshold was applied.

gmd:MD_Metadata

File identifier

91524626-5af4-00f9-e054-002128a47908   XML

Metadata language

English English

Hierarchy level

dataset Dataset

Date stamp

2021-02-25

Metadata standard version

2.3

Dataset URI

http://data.bgs.ac.uk/id/dataHolding/13607513