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Magnetic properties of sediments in cores from the Mandovi estuary, western India: Inferences on provenance and pollution

DRS at CSIR-National Institute of Oceanography

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Title Magnetic properties of sediments in cores from the Mandovi estuary, western India: Inferences on provenance and pollution
 
Creator Prajith, A.
Rao, V.P.
Kessarkar, P.M.
 
Subject GEOLOGY AND GEOPHYSICS
AQUATIC POLLUTION
GEOLOGY AND GEOPHYSICS
 
Description Magnetic properties of sediments were investigated in 7 gravity cores recovered along a transect of the Mandovi estuary, western India to understand their provenance and pollution. The maximum magnetic susceptibility of sediments was at least 6 times higher in the upper/middle estuary than in lower estuary/bay. The χfd% and χARM/SIRM of sediments indicated coarse, multi-domain and pseudo-single domain magnetic grains, resembling ore material in the upper/middle estuary and coarse stable single domain (SSD) to fine SSD grains in the lower estuary/bay. Mineralogy parameters indicated hematite and goethite-dominated sediments in the upper/middle estuary and magnetite-dominated sediments in the lower estuary/bay. Two sediment types were discernible because of deposition of abundant ore material in the upper/middle estuary and detrital sediment in the lower estuary/bay. The enrichment factor and Index of geo-accumulation of metals indicated significant to strong pollution with respect to Fe and Mn in sediments from the upper/middle estuary
 
Date 2015-11-02T08:55:30Z
2015-11-02T08:55:30Z
2015
 
Type Journal Article
 
Identifier Marine Pollution Bulletin, vol.99(1-2); 2015; 338-345
no
http://drs.nio.org/drs/handle/2264/4851
 
Language en
 
Relation Mar_Pollut_Bull_99_338.jpg
 
Rights An edited version of this paper was published by Elsevier. Copyright [2015] Elsevier
 
Publisher Elsevier