Date (Creation)

2023-08-23

Identifier

http://data.bgs.ac.uk/id/dataHolding/13608103

Maintenance and update frequency

notApplicable notApplicable

GEMET - INSPIRE themes, version 1.0

• Geology

BGS Thesaurus of Geosciences

• NGDC Deposited Data
• Volcanic ejecta
• Volcanic eruption

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

There are no restrictions on the use that may be made of the dataset, although an appropriate copyright acknowledgement must be made when any part of the dataset is reproduced. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner of any third party data / information contained in the dataset to make the dataset freely available without any use constraints - inclusion of any third party data / information will affect the copyright acknowledgement that needs to be made.

Metadata language

EnglishEnglish

Topic category

• Geoscientific information

Geographic identifier

MEX

Date (Revision)

2009

Geographic identifier

MEXICO [id=798000]

Date (Creation)

1979

Geographic identifier

MX

Date (Revision)

2009

Begin date

2019-06-01

End date

2020-10-31

Unique resource identifier

WGS 84 (EPSG::4326)

Distribution format

• MS Excel ()

OnLine resource

Data

Hierarchy level

dataset Dataset

Other

dataset

Statement

These major element concentrations in the glass shards were analysed using a JEOL JXA-8200 electron microprobe equipped with five wavelength-dispersive spectrometers in the School of Archaeology, University of Oxford, UK. A beam accelerating voltage of 15 kV was used with a 6 nA current and a beam diameter of 10 μm. A narrower beam of 5 μm was used for a few highly vesicular samples (noted by a * in the file). The EMP was calibrated using a suite of mineral standards. This calibration was verified using a range of secondary glass standards (ATHO-G, StHs6/80-G and GOR128-G; Jochum et al., 2006).

File identifier

04d5de93-92c5-376b-e063-0937940acadc XML

Metadata language

EnglishEnglish

Hierarchy level

dataset Dataset

Date stamp

2025-11-13

Metadata standard name

UK GEMINI

Metadata standard version

2.3

Dataset URI

http://data.bgs.ac.uk/id/dataHolding/13608103