The sand and gravel resources of the country west of Colchester, Essex : description of 1:25,000 resource sheet TL 92

Ambrose, J.D.. 1974 The sand and gravel resources of the country west of Colchester, Essex : description of 1:25,000 resource sheet TL 92. London, UK, British Geological Survey, 75pp. (Assessment of British sand and gravel resources No. 10, Report 74/6) (Unpublished)

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Abstract/Summary

It has become increasingly clear in recent years that an assessment of resources of many minerals should be undertaken. This Report of the Mineral Assessment Unit, which was set up in May 1968 to undertake such work, describes and quantifies the resources of sand and gravel of 90.6 km2 of country west of Colchester, Essex, shown on the accompanying 1:25 000 resource sheet TL 92. This survey is concerned with assessing sand and gravel resources on a regional scale at the indicated level; the deposits are not outlined completely nor their grade established throughout. The work may be regarded as the application to large areas of methods used commercially for evaluating reserves on small sites. It may also be regarded as an extension of geological mapping by providing information about the thickness and quality of deposits. The survey was conducted by the late J. D. Ambrose, with Mr N. E. Bradbury as field officer in charge of the drilling and sampling programme and Mr G. M. Bladon, who helped in the preparation of data for publication. The work is based on a geological survey at the one-inch scale by W. H. Dalton, published in 1882 and 1883. Mr J. W. Gardner, C. B. E. (Land Agent) has been responsible for negotiating access to land for drilling. The ready cooperation of landowners and tenants in this work is gratefully acknowledged. Special thanks are due to Dr T. L. Thomas of the Royal School of Mines, London, for his advice on methods of resource calculation. Financial support for the survey was provided by the Department of the Environment.

Item Type:	Publication - Report
Programmes:	BGS Programmes > Economic Minerals
ISBN:	0118806718
Funders/Sponsors:	British Geological Survey, Natural Environment Research Council
Additional Information. Not used in RCUK Gateway to Research.:	This item has been internally reviewed, but not externally peer-reviewed.
Additional Keywords:	sand, gravel
NORA Subject Terms:	Earth Sciences
Date made live:	07 Jun 2023 10:00 +0 (UTC)
URI:	https://nora.nerc.ac.uk/id/eprint/534809

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