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Title
Raised beaches, buried valleys: sand and gravel investigations at Kyleakinquarry, Isle of Skye, Scotland
Author:
Wardrop, DR;
Addresses:
Lafarge Redland Aggregates Ltd, Leicester LE6 0FA, Leics, England Lafarge Redland Aggregates Ltd Leicester Leics England LE6 0FA s, England
Heading Title:
TRANSACTIONS OF THE INSTITUTION OF MINING AND METALLURGY SECTION B-APPLIEDEARTH SCIENCE
, volume: 107, year: 1998,
pages: B130 - B138
SICI:
0371-7453(199809/12)107:<B130:RBBVSA>2.0.ZU;2-8
Source:
ISI
Language:
ENG
Document Type:
Article
Nature:
Serial
Edition:
Physical, Chemical & Earth Sciences
Citations:
2
Reviewed:
Addresses for extracts:
Address: Wardrop, DR Lafargenglandnd Aggregates Ltd, Bradgate House, Leicester LE6 0FA, Leics, E Lafarge Redland Aggregates Ltd Bradgate House Leicester LeicsEngland LE6 0FA
Citation:
D.R. Wardrop, "Raised beaches, buried valleys: sand and gravel investigations at Kyleakinquarry, Isle of Skye, Scotland", T I MIN M-B, 107, 1998, pp. B130-B138

Abstract

Sand and gravel that form the Scottish 100-foot raised beach on the Isle of Skye are worked at Kyleakin quarry. Redland acquired the operation in 1987 after a full geological investigation to translate an inferred resource into a proven reserve. The raised beach overlies Torridonian Sandstone and initial observations from walking over the site were used to postulate the form of the buried topography. A subsequent drilling programme faced considerable challenges posed by the unusual nature of the deposits. The overburden is up to 6 m of waterlogged peat and the deposit itself proved very difficult to drill because of a high degree of compaction and an extreme range of particle size. It is not amenable to conventional soft rock drilling techniques, but is too unconsolidated to drill by conventional hard rock techniques. Two drilling methods were tried before a third was successful. The bedrock topography proved to be closely similar to the original hypothesis and the detailed information enabled a new working scheme to be designed. The scheme comprises geotechnically sound sand and gravel bunds for theretention of a large volume of semi-liquid peat. Restoration has to mimic the natural bedrock topography and be compatible with the nature and scale of the landscape. Visual impact considerations require maintenance of the raised beach profile such that the nature of the feature remains apparent. The amount of mineral to be worked reduced from an inferred resource of 21 000 000 t to a proven reserve of slightly more than 10 000 000 t, illustrating the major effect of planning and technical constraints.

ASDD Area Sistemi Dipartimentali e Documentali, Bologna University, Review Catalogue
Document created on 20/10/20 at 00:53:52