Provenance of Nicobar Fan sediments from IODP Expedition 362, offshore Sumatra (NERC grant NE/P016618/1)
Detrital zircon age data, details of Expedition 362 samples . For more information see published report, https://doi.org/10.1016/j.epsl.2017.07.019 IODP Sites U1480–U1481, located on the Indian oceanic plate, east of the NinetyEast Ridge and west of the north Sumatran subduction margin Site U1480 ~ 3°2.0447'N 91°36.3481'E 4147.5 Site U1481 ~ 2°45.261'N 91°45.5771'E
dataset
:
http://data.bgs.ac.uk/id/dataHolding/13607363
English
Geoscientific information
GEMET - INSPIRE themes, version 1.0:
BGS Thesaurus of Geosciences:
Provenance
Submarine fans
Zircon
NGDC Deposited Data
Radiometric dating
Free:
Free:
NERC_DDC
91.6000,
2.7500,
91.7700,
3.0300
INDIAN OCEAN [id=2001427]
creation: 2018-08-08
2016-08-06
-
2016-10-06
University College London
Professor Kevin T Pickering
Kathleen Lonsdale Building, 5 Gower Place,
London,
WC1E 6BS
email:
not available
Role: point of contact
University College London
Professor Kevin T Pickering
Kathleen Lonsdale Building, 5 Gower Place,
London,
WC1E 6BS
email:
not available
Role: principal investigator
Data Quality
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.
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Commission Regulation (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services
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]"
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.
Metadata about metadata
7315a8c4-deeb-4d62-e054-002128a47908
British Geological Survey
Environmental Science Centre,Keyworth,
NOTTINGHAM,
NG12 5GG,
United Kingdom
tel: +44 115 936 3100
email:
enquiries@bgs.ac.uk
Role: point of contact
2024-04-24