Electron Probe Microanalyzer (EPMA) data from a selection of tephra occurrences drilled at IODP Sites 350-U1436 and 350-U1437. (NERC grant NE/M005240/1)
Many tephra layers were identified in sediment cores drilled during IODP Expedition 350. Here, 1092 glass shards from 76 tephra occurrences (layer or patch) were analysed using electron probe microanalyses (EPMA). Data are not averaged, nor normalised. Geochemistry data were collected for: SiO2, TiO2, Al2O3, Cr2O3, FeO, MnO, MgO, CaO, Na2O, K2O, P2O5, SO3, Cl and O. Secondary standard data are given, as well as beam setup conditions. The data were obtained using the instruments at the University of Bristol, over two sessions during October and November 2014.
Default
Identification info
- Metadata Language
- English (en)
- Dataset Reference Date ()
- 2018-03-21
University of Bristol
-Dr Sue Mahony
(Honorary Senior Research Associate
)School of Earth Sciences, Wills Memorial Building, Queens Road, Clifton
,Bristol
,BS8 1RJ
,United Kingdom
- Maintenance and update frequency
- notApplicable
- GEMET - INSPIRE themes
- BGS Thesaurus of Geosciences
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Grain size analysis
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Volcanic ejecta
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- Keywords
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NERC_DDC
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- 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
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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
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Available under the Open Government Licence subject to the following acknowledgement accompanying the reproduced NERC materials "Contains NERC materials ©NERC [year]"
- Topic category
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- Geoscientific information
- Extent
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BONIN TRENCH [id=926400]
- Dataset Reference Date ()
- 1979
))
- Begin date
- 2014-10-22
- End date
- 2014-10-24
- Additional information
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Site 350-U1437 is located at 31°47.391′N, 139°01.579′E; 2116.1 m water depth in the Izu rear arc, ~330 km west of the axis of the Izu-Bonin Trench and ~90 km west of the arc-front volcanoes Myojinsho and Myojin Knoll at 2117 mbsl. Site 350-U1436 is located at 32°23.883′N, 140°21.928′E; (1776 m water depth), in the western half of the Izu-Bonin fore-arc basin, ~60 km east of the arc-front volcano Aogashima and ~170 km west of the axis of the Izu-Bonin Trench.
Spatial Reference System
Distribution Information
- Data format
-
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MS Excel
()
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- Resource Locator
- http://www.bgs.ac.uk/services/ngdc/accessions/index.html#item108150
- Resource Locator
- http://www.bgs.ac.uk/services/ngdc/accessions/index.html#item108150
- Quality Scope
- dataset
- Other
-
dataset
Report
- Dataset Reference Date ()
- 2011
- Explanation
-
See the referenced specification
- Degree
Report
- Dataset Reference Date ()
- 2010-12-08
- Explanation
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See http://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=OJ:L:2010:323:0011:0102:EN:PDF
- Degree
- Statement
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Particle size distributions were measured with a Malvern Mastersizer 2000 laser diffraction particle size analyser. All samples were placed on a shaking table for at least 10 minutes prior to analysis. Each sample was run 3 times in order to check the reproducibility of the measurements. The mean of each set of results was taken to calculate the values for each sample. The raw data are also included. All analyses were conducted at the National Oceanography Centre, Southampton.
Metadata
- File identifier
- 692b4b32-2b0f-0b92-e054-002128a47908 XML
- Metadata Language
- English (en)
- Resource type
- dataset
- Metadata Date
- 2023-05-24
- Metadata standard name
- UK GEMINI
- Metadata standard version
-
2.3
British Geological Survey
Environmental Science Centre,Keyworth
,NOTTINGHAM
,NOTTINGHAMSHIRE
,NG12 5GG
,United Kingdom