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Grain Size data from a selection of tephra occurrences drilled at IODP Sites 350-U1436 and 350-U1437. (NERC grant NE/M005240/1)

120 samples of 57 tephra layers identified at IODP Expedition 350 sites (U1436 and U1437) were used in grain size analysis. Some layers have one grain size measurement, others have multiple measurements throughout the tephra layer.

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Identification info

Metadata Language
English (en)
Dataset Reference Date ()
2018-03-21
Identifier

http://data.bgs.ac.uk/id/dataHolding/13607293

 

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
  • Geology
BGS Thesaurus of Geosciences
  • Grain size analysis

  • Submarine trenches

  • Volcanic ejecta

  • Volcanic glass

  • Geochemistry

  • Electron microprobes

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

Available under the Open Government Licence subject to the following acknowledgement accompanying the reproduced NERC materials "Contains NERC materials ©NERC [year]"

Topic category
  • Geoscientific information
Extent

BONIN TRENCH [id=926400]

Dataset Reference Date ()
1979

N
S
E
W


Begin date
2014-10-13
End date
2014-11-13
Additional information

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

No information provided.

Distribution Information

Data format
  • MS Excel

    ()

Resource Locator
http://www.bgs.ac.uk/services/ngdc/accessions/index.html#item108151
Resource Locator
http://www.bgs.ac.uk/services/ngdc/accessions/index.html#item108151
 
Quality Scope
dataset
Other

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

Samples were dried, then set in epoxy in a thin walled sample ring, polished and carbon coated. Two sessions of analysis took place using the JEOL JXA8530F Hyperprobe, with analyses on 13/10/2014 using a focused beam with no TDI. Analyses on 13/11/2014 used a 4 micron beam with TDI counting for 10 intervals over time period, see third tab in Excel file for beam setup. Approximately 10-15 glass shards were analysed per sample. Data were filtered to remove results that were obviously not glass.

Metadata

File identifier
692a7f13-9317-6e85-e054-002128a47908 XML
Metadata Language
English (en)
Resource type
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
 
 

Overviews

N
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