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Overbank deposits of the Narrator Brook, Dartmoor, England

Published online by Cambridge University Press:  01 May 2009

B. Gomez  and
P. C. Sims
B. Gomez
Affiliation:
Department of Geography, The University, Southampton, Hants SO9 5NH
P. C. Sims
Affiliation:
Department of Geographical Sciences, Plymouth Polytechnic, Plymouth, Devon PL4 8AA
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Summary

Overbank deposits of the Narrator Brook, exposed by the excavation of a drainage ditch, are described. The deposits, which consist of coarse (sand and gravel), fine (silt and clay) and peat units, were laid down in a floodbasin environment. The coarse units are interpreted as crevasse-splay deposits, rather than being classified as floodbasin sediments along with the fine units. Three stages of development in the evolution of the floodbasin are identified. The first stage is represented by the development of peat at a time when the area was not subjected to flooding, the second by deposition of the fine and coarse sediment units and the third by an upper peat horizon. No precise date for the formation of the deposits is at present available, but it is thought that they may be the result of man's activity in the catchment.

Type
Articles
Information
Geological Magazine , Volume 118 , Issue 1 , January 1981 , pp. 77 - 82
Copyright
Copyright © Cambridge University Press 1981

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