Identification

Title

High precision zircon U-Pb data for plutonic rocks from the Masirah and Ra's Madrakah ophiolites, South East Oman

Abstract

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.

Resource type

nonGeographicDataset

Resource locator

https://webapps.bgs.ac.uk/services/ngdc/accessions/index.html#item183841

name: Data

function: download

https://doi.org/10.5285/3ba7bf8e-0118-4953-86b2-884028d062c4

name: Digital Object Identifier (DOI)

function: information

Unique resource identifier

code

http://data.bgs.ac.uk/id/dataHolding/13608184

codeSpace

Dataset language

eng

Spatial reference system

code identifying the spatial reference system

Classification of spatial data and services

Topic category

geoscientificInformation

Keywords

Keyword set

keyword value

originating controlled vocabulary

title

reference date

date type

publication

effective date

2008-06-01

Keyword set

keyword value

Ophiolites

Absolute age

Gondwana

Zircon

Uranium thorium lead dating

NGDC Deposited Data

Geochronology

Oceanic crust

originating controlled vocabulary

title

reference date

date type

revision

effective date

2022

Keyword set

keyword value

Keyword set

keyword value

NERC_DDC

Geographic location

West bounding longitude

East bounding longitude

North bounding latitude

South bounding latitude

Temporal reference

Temporal extent

Begin position

2020-08-29

End position

2022-04-11

Dataset reference date

date type

creation

effective date

2024-02-02

Frequency of update

notApplicable

Quality and validity

Lineage

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.

Conformity

Conformity report

specification

title

reference date

date type

publication

effective date

2011

degree

false

explanation

See the referenced specification

Conformity report

specification

title

reference date

date type

publication

effective date

2010-12-08

degree

false

explanation

See http://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=OJ:L:2010:323:0011:0102:EN:PDF

Data format

name of format

MS Excel

version of format

Constraints related to access and use

Constraint set

Limitations on public access

Constraint set

Limitations on public access

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.

Responsible organisations

Responsible party

organisation name

University of Cardiff

full postal address

School of Earth and Environmental Sciences, Cardiff University Main building, Park Place

Cardiff

CF10 3AT

email address

not available

responsible party role

originator

Responsible party

organisation name

University of Cardiff

full postal address

Main Building, Park Place

Cardiff

CF10 3AT

email address

not available

responsible party role

originator

Responsible party

organisation name

University of Cardiff

email address

not available

responsible party role

originator

Responsible party

organisation name

University of Bristol

email address

not available

responsible party role

originator

Responsible party

organisation name

British Geological Survey

full postal address

Environmental Science Centre, Nicker Hill, Keyworth

NOTTINGHAM

NG12 5GG

United Kingdom

telephone number

0115 936 3143

facsimile number

0115 936 3276

email address

enquiries@bgs.ac.uk

responsible party role

distributor

Responsible party

organisation name

British Geological Survey

full postal address

Environmental Science Centre, Nicker Hill, Keyworth

NOTTINGHAM

NG12 5GG

United Kingdom

telephone number

0115 936 3143

facsimile number

0115 936 3276

email address

enquiries@bgs.ac.uk

responsible party role

originator

Responsible party

organisation name

British Geological Survey

email address

not available

responsible party role

distributor

Responsible party

organisation name

British Geological Survey

email address

not available

responsible party role

pointOfContact

Metadata on metadata

Metadata point of contact

organisation name

British Geological Survey

full postal address

Environmental Science Centre,Keyworth

NOTTINGHAM

NG12 5GG

United Kingdom

telephone number

+44 115 936 3100

email address

enquiries@bgs.ac.uk

responsible party role

pointOfContact

Metadata date

2024-04-18

Metadata language