b097da42-487b-0ff8-e054-002128a47908 English dataset British Geological Survey +44 115 936 3100 Environmental Science Centre,Keyworth NOTTINGHAM NOTTINGHAMSHIRE NG12 5GG United Kingdom enquiries@bgs.ac.uk pointOfContact 2026-04-12 UK GEMINI 2.3 http://data.bgs.ac.uk/id/dataHolding/13607675 Microstructural measurements of mafic igneous rocks (NERC Grant NE/N009894/1) 2020-09-25 creation http://data.bgs.ac.uk/id/dataHolding/13607675 Measurements of the shape and size of plagioclase and olivine grains in a suite of dolerite dykes and sills. The olivine data refer to the family of sills forming the Little Minch Sill Complex where exposed on the Isle of Skye, while the plagioclase work also includes a range of sills and dykes from all over the world. Measurments of dihedral angles at junctions between two grains of plagioclase and one of pyroxene, again in dolerites from dykes and sills, and also from the Rustenburg Suite of the Bushveld Layered Intrusion in South Africa. Professor Marian Holness University of Cambridge Department of Earth Sciences Downing Street Cambridge CB2 3EQ not available originator Professor Marian Holness University of Cambridge Department of Earth Sciences Downing Street Cambridge CB2 3EQ not available principalInvestigator 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/b097da42-487b-0ff8-e054-002128a47908.png Geology GEMET - INSPIRE themes, version 1.0 2008-06-01 publication Sills Plagioclase Dolerite Layered intrusions Dykes BGS Thesaurus of Geosciences 2022 revision NGDC Deposited 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]. 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. Available under the Open Government Licence subject to the following acknowledgement accompanying the reproduced NERC materials "Contains NERC materials ©NERC [year]" English geoscientificInformation British Geological Survey Gazetteer: Geographical hierarchy from Geosaurus 1979 creation GREENLAND [id=902000] British Geological Survey Gazetteer: Geographical hierarchy from Geosaurus 1979 creation MULL [id=147845] ISO 3166_1 alpha-2 2009 revision SE British Geological Survey Gazetteer: Geographical hierarchy from Geosaurus 1979 creation SKYE [id=99845] British Geological Survey Gazetteer: Geographical hierarchy from Geosaurus 1979 creation SOUTH AFRICA [id=670000] ISO 3166_1 alpha-3 2009 revision SWE British Geological Survey Gazetteer: Geographical hierarchy from Geosaurus 1979 creation SWEDEN [id=132000] ISO 3166_1 alpha-2 2009 revision ZA ISO 3166_1 alpha-3 2009 revision ZAF -180.0000 180.0000 -90.0000 90.0000 2017-01-01 2017-09-30 Microsoft Excel witheld Microsoft Word witheld Enquiries British Geological Survey United Kingdom not available distributor https://webapps.bgs.ac.uk/services/ngdc/accessions/index.html#item137825 WWW:DOWNLOAD-1.0-http--download Data download dataset 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 Measurements of grain size and shape were made from detailed photomicrographs of thin sections. Dihedral angles were measured from thin sections using a universal stage mounted on an optical microscope.