alexa Historical Mining Signatures: Geochemical and Mineralogical Evaluation of Sediments in three Coastal–Estuarine Systems
ISSN: 2473-3350

Journal of Coastal Zone Management
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Research Article

Historical Mining Signatures: Geochemical and Mineralogical Evaluation of Sediments in three Coastal–Estuarine Systems

Temitope D. Timothy Oyedotun*

Department of Geography and Planning Sciences, Adekunle Ajasin University, Ondo State, Nigeria

*Corresponding Author:
Temitope D. Timothy Oyedotun
Department of Geography and Planning Sciences
Adekunle Ajasin University, P. M. B. 001
Akungba-Akoko, Ondo State, Nigeria
Tel: +234-813-86602
E-mail: [email protected]

Received date: August 05, 2016; Accepted date: August 19, 2016; Published date: August 26, 2016

Citation: Oyedotun TDT (2016) Historical Mining Signatures: Geochemical and Mineralogical Evaluation of Sediments in three Coastal–Estuarine Systems. J Coast Zone Manag 19:432. doi:10.4172/2473-3350.1000432

Copyright: © 2016 Oyedotun TDT. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

 

Abstract

The X-ray fluorescence (XRF) of the inter-tidal sediments in Hayle, Gannel and Camel estuaries in southwest England’s coasts are examined here to evaluate and compare the broad geochemistry of each of the three systems. The total base cation content (Na, Mg and K) of the samples in all of the estuaries is 5% while the Ca is ~>20%. In terms of sub-environment significance, the estuarine and inlet sediments of Hayle exhibit a high content of Ca than the coastal/beach samples while both the Gannel’s estuarine and beach samples exhibit ~25% of Ca composition. There is high variation in the dimension of Ca in the different sub-environments sampled in Camel estuary (outerestuary – 25-28%, mid-estuary - ~20%, inner – 30%). The Al and Fe contents in all of the sites are below 2% except in Camel where Al is around 3.5%. There clear difference in the percentage of composition of trace elements among the estuaries is also evident. Sn’s concentration in Hayle is higher than that of Camel and Gannel. Pb, Ba, Zr and Zn is significant in all of the estuaries at various degrees - Pb and Zn are abundant in Gannel, while Sn, W, Zr prominent in Camel. The significant effect of the release of the particulate mine waste are observed in the samples’ mineralogical composition despite the cessation of the mine activities in the 19th/early 20th Century, suggesting that these elements are still bio-available and bio-active for riverine processes to transport/migrate in the estuary–coast interaction.

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