10b7e887-1923-305a-e063-0937940af15d English nonGeographicDataset non geographic dataset British Geological Survey +44 115 936 3100 Environmental Science Centre,Keyworth NOTTINGHAM NOTTINGHAMSHIRE NG12 5GG United Kingdom enquiries@bgs.ac.uk pointOfContact 2026-04-29 UK GEMINI 2.3 http://data.bgs.ac.uk/id/dataHolding/13608184 High precision zircon U-Pb data for plutonic rocks from the Masirah and Ra's Madrakah ophiolites, South East Oman 2024-02-02 creation http://data.bgs.ac.uk/id/dataHolding/13608184 Zircon U-Pb isotope data are presented for eight plutonic rocks from the Masirah ophiolite and one plutonic rock from the Ra's Madrakah ophiolite (south east Oman). These data constrain the age of formation of the two ophiolite nappes exposed on Masirah Island (early Cretaceous), whereas two intrusions with younger ages (late Cretaceous) overlap with the proposed emplacement age of the ophiolite. The data cover two sites in the Masirah Lower Nappe, two sites in the Masirah Upper Nappe (on Masirah Island, off the SE coast of Oman) and one site on Ra's Madrakah (on the mainland of Oman). The interpretation and discussion of these data form part of a manuscript submitted to Geochemistry, Geophysics, Geosystems. Data collection was done using chemical abrasion isotope dilution thermal ionisation mass spectrometry (CA-ID-TIMS) at the NERC Isotope Geosciences Laboratories at the British geological Survey, supported by NERC Isotope Geosciences Facilities award IP-1919-0619. This work resulted from a PhD project funded by NERC GW4+ DTP grant NE/L002434/1. Johan Lissenberg University of Cardiff School of Earth and Environmental Sciences, Cardiff University Main building, Park Place Cardiff CF10 3AT not available originator Max Jansen University of Cardiff Main Building, Park Place Cardiff CF10 3AT not available originator Christopher MacLeod University of Cardiff not available originator Ian Parkinson University of Bristol not available originator Enquiries British Geological Survey 0115 936 3143 0115 936 3276 Environmental Science Centre, Nicker Hill, Keyworth NOTTINGHAM NOTTINGHAMSHIRE NG12 5GG United Kingdom enquiries@bgs.ac.uk distributor Enquiries British Geological Survey 0115 936 3143 0115 936 3276 Environmental Science Centre, Nicker Hill, Keyworth NOTTINGHAM NOTTINGHAMSHIRE NG12 5GG United Kingdom enquiries@bgs.ac.uk originator Enquiries British Geological Survey United Kingdom not available distributor Enquiries British Geological Survey United Kingdom not available pointOfContact notApplicable https://resources.bgs.ac.uk/images/geonetworkThumbs/10b7e887-1923-305a-e063-0937940af15d.png Geology GEMET - INSPIRE themes, version 1.0 2008-06-01 publication Ophiolites Absolute age Gondwana Zircon Uranium thorium lead dating Geochronology Oceanic crust BGS Thesaurus of Geosciences 2022 revision NGDC Deposited Data Citable Data dataCentre NERC_DDC otherRestrictions licenceOGL Available under the Open Government Licence subject to the following acknowledgement accompanying the reproduced NERC materials "Contains NERC materials ©NERC [year]" otherRestrictions The copyright of materials derived from the British Geological Survey's work is vested in the Natural Environment Research Council [NERC]. 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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]" English geoscientificInformation 2020-08-29 2022-04-11 Microsoft Excel witheld Enquiries British Geological Survey 0115 936 3143 0115 936 3276 Environmental Science Centre, Nicker Hill, Keyworth NOTTINGHAM NOTTINGHAMSHIRE NG12 5GG United Kingdom enquiries@bgs.ac.uk distributor Enquiries British Geological Survey United Kingdom not available distributor https://webapps.bgs.ac.uk/services/ngdc/accessions/index.html#item183841 WWW:DOWNLOAD-1.0-http--download Data download https://doi.org/10.5285/3ba7bf8e-0118-4953-86b2-884028d062c4 WWW:LINK-1.0-http--related Citation Information - Digital Object Identifier (DOI) Jansen, M., MacLeod, C., Lissenberg, J., Parkinson, I., Condon, D. (2024). High precision zircon U-Pb data for plutonic rocks from the Masirah and Ra's Madrakah ophiolites, South East Oman. NERC EDS National Geoscience Data Centre. (Dataset). https://doi.org/10.5285/3ba7bf8e-0118-4953-86b2-884028d062c4 information nonGeographicDataset non geographic dataset INSPIRE Implementing rules laying down technical arrangements for the interoperability and harmonisation of Geology 2011 publication See the referenced specification false 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 2010-12-08 publication See http://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=OJ:L:2010:323:0011:0102:EN:PDF false Single zircons were isolated from the rock material using a Selfrag© and standard mineral separation techniques. To minimise the effect of Pb-loss, selected zircons were subjected to chemical abrasion to remove damaged parts of the crystal that likely experienced open-system behaviour (Mattinson, 2005). Uranium-Pb isotopic compositions of individual zircons were determined by ID-TIMS using a 202Pb-205Pb–233U–235U mixed-spike and data reduction was carried out using UPb Redux (McLean et al., 2011). All dates were corrected for initial Th/U disequilibrium and the uncertainties on the tracer and blank compositions were propagated into the measurement uncertainty. The blank contribution was determined by monitoring 204Pb and assuming all common Pb (Pbc) was blank-derived.