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Iron ore pollution in Mandovi and Zuari estuarine sediments and its fate after mining ban

DRS at CSIR-National Institute of Oceanography

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Title Iron ore pollution in Mandovi and Zuari estuarine sediments and its fate after mining ban
 
Creator Kessarkar, P.M.
Suja, S.
Sudheesh, V.
Srivastava, S.
Rao, V.P.
 
Subject GEOLOGY AND GEOPHYSICS
GEOLOGY AND GEOPHYSICS
AQUATIC POLLUTION
AQUATIC POLLUTION
 
Description Iron ore was mined from the banded iron formations of Goa, India, and transported through the Mandovi and Zuari estuaries for six decades until the ban on mining from September 2012. Here we focus on the environmental magnetic properties of sediments from the catchment area, upstream and downstream of these estuaries, and adjacent shelf during peak mining time. Magnetic susceptibility (χ lf) and saturation isothermal remanent magnetization (SIRM) values of sediments were highest in upstream (catchment area and estuaries), decreased gradually towards downstream (catchment area and estuaries), and were lowest on the adjacent shelf. The χ lf values of the Mandovi estuary were two to fourfold higher than those in the Zuari. The sediments of these two estuaries after the mining ban showed enrichment of older magnetite and sharp decrease in the SIRM values. Although the input of ore material has been reduced after mining ban, more flushing of estuarine sediments is required for healthier environment
 
Date 2015-11-02T08:53:50Z
2015-11-02T08:53:50Z
2015
 
Type Journal Article
 
Identifier Environmental Monitoring and Assessment, vol.187(9); 2015; no.572 doi: 10.1007/s10661-015-4784-z
http://drs.nio.org/drs/handle/2264/4850
 
Language en
 
Rights An edited version of this paper was published by Springer. This paper is for R & D purpose and Copyright [2015] Springer.
 
Publisher Springer