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Geochemical variations in the intertidal deposits within the Dyfi Estuary, West Wales, United Kingdom—A case study
Author(s) -
Pyatt F. B.,
Collin R. L.
Publication year - 1999
Publication title -
environmental toxicology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.813
H-Index - 77
eISSN - 1522-7278
pISSN - 1520-4081
DOI - 10.1002/(sici)1522-7278(199905)14:2<249::aid-tox6>3.0.co;2-0
Subject(s) - estuary , intertidal zone , sediment , salt marsh , marsh , oceanography , geology , environmental science , hydrology (agriculture) , ecology , wetland , geomorphology , geotechnical engineering , biology
Sediments sampled at varying levels and from different depths within the extensive intertidal marshes of the Dyfi Estuary, West Wales, United Kingdom, are considered from a geochemical perspective. Differences are described which can be related to natural sediment sources, depositional sequences, and patterns of tidal inundation together with a variety of other parameters, including possible associations with the former periods of heavy metal mining in the Dyfi catchment. It is suggested that these periods of metalliferous activity have contaminated the estuarine sediments with lead, copper and cadmium in particular. ©1999 John Wiley & Sons, Inc. Environ Toxicol 14: 249–261, 1999