OR/15/026 Acknowledgements

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Gunn, A G, Mendum, J R and Thomas, C W. 2015. Geology of the Huntly and Turriff Districts. Sheet description for the 1:50 000 geological sheets 86W (Huntly) and 86E (Turriff) (Scotland). British Geological Survey Internal Report, OR/15/026.

The original geological survey was carried out by mainly by J Horne between 1880 and 1884, with minor contributions from J S Grant Wilson and L W Hinxman. Detailed revision was undertaken by H H Read between 1917 and 1919 and the resultant 1:63 360 scale Sheet 86 (Huntly) and related memoir were published in 1923. The more recent mapping in the districts took place in the late 1980s and early 1990s, as part of the wider East Grampian Project. It has concentrated mainly in the Huntly district, where, the Department of Trade and Industry (DTI) funded detailed mapping and investigations by BGS in areas thought likely to be prospective for minerals, work complemented by the DTI Mineral Reconnaissance Programme. However, the bulk of the mapping and related work in the Huntly andTurriff districts was funded by the Department of Education and Science as part of its remit to provide geological data, maps and reports to underpin the UK infrastructure and economy. The Forestry Commission and other landowners within the Huntly and Turriff districts are thanked for their cooperation and assistance.

The mapping and related geological studies have resulted in significant revision of the geology, culminating in publication of the accompanying 1:50 000 Sheet 86E (Turriff) and 86W (Huntly) maps in 1995 and 2000 respectively. The solid geology was compiled from 1:10 000 maps produced by A G Gunn, J R Mendum, S D Redwood, D Stephenson, C W Thomas and D Gould, and from other map and data sources held in the archives of the British Geological Survey. A G Gunn compiled the data on mineral reconnaissance work on the mafic igneous intrusions. M Styles undertook detailed petrographical work in the mafic-ultramafic igneous rocks, and E R Phillips and B Beddoe-Stephens undertook petrographical work on the Keith Granite and the metamorphic rocks, respectively. T A Fletcher is thanked for making available his data on the Littlemill–Auchincrieve area. The concealed geology was described by K E Rollin and J R Mendum. D Gould contributed to the description of the basic igneous rocks and D Ball described the hydrogeology. The sheet description was initially compiled by C W Thomas and A G Gunn and edited subsequently by D Woodhall. More recently the text has been further revised and significantly updated by J R Mendum.