Identification info

Metadata Language

English (en)

Dataset Reference Date ()

2018-03-07

Identifier

http://data.bgs.ac.uk/id/dataHolding/13607289

Maintenance and update frequency

notApplicable

GEMET - INSPIRE themes

• Geology

BGS Thesaurus of Geosciences

• Basalt

• Lead ratio

• Isotope ratio

• Submarine trenches

• Andesite

• Lead isotopes

• Basement

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

Begin date

2014-07-30

End date

2016-12-31

 

Distribution Information

Data format

 

Quality Scope

dataset

Other

dataset

Statement

Rocks were prepared by initially crushing inside a plastic envelope using a non-torque press. Crushed material was then separated to 0.5-1.0 mm using a Teflon sieve set. This fraction was repeatedly cleaned with in ultra-pure water in an ultra-sonic bath. Cleaned rock-chips were then picked during a microscopic examination. Samples were leached for 30-40 min in 4M HCl at 200°C prior to Pb separation using HBr-HCl anion exchange columns. Lead isotope ratios were measured by a Thermo Neptune MC-ICP-MS at the University of Southampton UK, using a double spike run of each sample to correct for instrumental mass fractionation. A 207Pb-204Pb SBL74 spike was added such that 204Pbsample/204Pbspike was 0.09±0.03. Procedural blanks range between 30-95 pg Pb. Propagated uncertainty for combined natural sample and spiked sample analyses were always less than reproducibility 2sd of NBS SRM 981.

Metadata

File identifier

6802a597-6dc8-06e3-e054-002128a47908 XML

Metadata Language

English (en)

Resource type

dataset

Metadata Date

2023-03-11

Metadata standard name

UK GEMINI

Metadata standard version

2.3