Palaeointensity measurements from the Bourinot volcanic units (~505 Ma) and the Itabaiana dyke swarm (~525 Ma)

This dataset comprises palaeointensity measurements from the Bourinot volcanic units (~505 Ma) and the Itabaiana dyke swarm (~525 Ma), with associated palaeomagnetic and rock magnetic metadata. The dataset covers Cambrian igneous units from two geographically distinct regions: the Bourinot volcanic sequence of Cape Breton Island, Nova Scotia (Avalonia), dated to ~505 Ma, and the Itabaiana dyke swarm of northeastern Brazil (Gondwana), dated to ~525 Ma. Together, these units sample magmatic rocks emplaced on separate palaeocontinental blocks during the early–middle Cambrian, providing geographically and tectonically independent constraints on geomagnetic field behaviour during this interval. The Excel file contains specimen-level palaeomagnetic and palaeointensity measurement data from Cambrian igneous units. It includes stepwise laboratory measurement records for individual specimens, comprising directional data (declination and inclination), magnetic moment and vector components, and associated experimental metadata. Each row represents a single laboratory measurement step within demagnetisation or palaeointensity experiments (e.g. IZZI-type Thellier protocols). The columns document specimen identifiers, experiment and method codes, instrument information, analysts, treatment conditions (thermal, alternating-field, and microwave where applicable), applied laboratory fields, measurement sequence, quality flags, and timestamps. Supporting metadata include citations, laboratory standards, and descriptive fields required for reproducibility and data reuse. The dataset is formatted to be compatible with established palaeomagnetic data standards and supports reconstruction of full experimental workflows for palaeointensity analysis.

Date (Creation): 2026-01-14

Citation identifier: http://data.bgs.ac.uk/id/dataHolding/13608605

Point of contact

Organisation name	Individual name	Electronic mail address	Role
University of Liverpool	Professor Andrew Biggin	not available	Originator
University of Liverpool	Dr Simon Lloyd	not available	Originator
University of Liverpool	Dr Rebecca Hopkins	not available	Originator
British Geological Survey	Enquiries	not available	Distributor
British Geological Survey	Enquiries	not available	Point of contact

Maintenance and update frequency: notApplicable

GEMET - INSPIRE themes, version 1.0

Geology

BGS Thesaurus of Geosciences

Cambrian
Dyke swarm
Magnetism
Geomagnetic fields
Palaeomagnetism

dataCentre

Keywords

NERC_DDC

Access constraints: 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: 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: Available under the Open Government Licence subject to the following acknowledgement accompanying the reproduced NERC materials "Contains NERC materials ©NERC [year]"

Language: English

Topic category

Geoscientific information

Begin date: 2024-10-01

End date: 2026-01-01

Reference System Information

No information provided.

Distribution format

Name	Version
Microsoft Excel (XLSX)

Distributor contact

Organisation name	Individual name	Electronic mail address	Role
British Geological Survey	Enquiries	not available	Distributor

OnLine resource

Protocol	Linkage	Name
WWW:DOWNLOAD-1.0-http--download	https://webapps.bgs.ac.uk/services/ngdc/accessions/index.html#item191275	Data

OnLine resource

Protocol	Linkage	Name
WWW:LINK-1.0-http--related	https://doi.org/10.5285/b533cba8-1c15-4324-823a-a8287b787365	Citation Information - Digital Object Identifier (DOI)

Hierarchy level: Non geographic dataset

Other: non geographic dataset

Conformance result

Title: INSPIRE Implementing rules laying down technical arrangements for the interoperability and harmonisation of Geology

Date (Publication): 2011

Explanation: See the referenced specification

Pass: No

Conformance result

Title: 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

Date (Publication): 2010-12-08

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

Pass: No

Statement: Palaeointensity data were obtained from Cambrian volcanic and dyke units using standard laboratory palaeomagnetic protocols, with full supporting metadata.