Identification info

Metadata Language

English (en)

Dataset Reference Date ()

2018-08-08

Identifier

http://data.bgs.ac.uk/id/dataHolding/13607363

Maintenance and update frequency

notApplicable

GEMET - INSPIRE themes

• Geology

BGS Thesaurus of Geosciences

• Provenance

• Zircon

• Submarine fans

• Radiometric dating

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

INDIAN OCEAN [id=2001427]

Dataset Reference Date ()

2010

Begin date

2016-08-06

End date

2016-10-06

 

Distribution Information

Data format

• MS Excel

  ()

 

Quality Scope

dataset

Other

dataset

Statement

Detrital zircon age analysis for provenance of Nicobar Fan sands Samples were taken from sediment gravity flow deposits in cores of Sites U1480 and U1481. A concentrate of heavy minerals rich in zircon obtained using standard heavy liquid techniques was mounted in araldite and polished. Zircon grains were selected randomly and analysed by laser ablation inductively coupled plasma mass spectrometry in the London Geochronology Centre at University College London using a New Wave 193 nm aperture-imaged, frequency-quintupled laser ablation system coupled to an Agilent 7700 ICPMS. Typical ablation parameters were 20-35 µm, 10 Hz repetition rate and an energy fluence of ca. 2:5 J/cm2. Plesovice was used as an age standard (TIMS reference age 337.13±0.37 Ma) to correct for instrumental mass bias and depth-dependent inter-element fractionation of Pb, Th and U. Temora and 91500 zircon were used as secondary age standards. Data were processed using GLITTER 4.4 data reduction software. Calculated 206Pb/238U ages were used for grains younger than 1000 Ma, and the 207Pb/206Pb age for older grains. Grains with a complex growth history or disturbed isotopic ratios, with > +5/-15% discordance, were rejected.

Metadata

File identifier

7315a8c4-deeb-4d62-e054-002128a47908 XML

Metadata Language

English (en)

Resource type

dataset

Metadata Date

2022-09-27

Metadata standard name

UK GEMINI

Metadata standard version

2.3