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Sediment boron and its relation to sediment properties in a tropical estuary

DRS at CSIR-National Institute of Oceanography

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Title Sediment boron and its relation to sediment properties in a tropical estuary
 
Creator Shirodkar, P.V.
Dalal, V.N.K.
 
Subject Geology and Geophysics
x-ray diffraction analysis
clay minerals
monsoons
seasonal variations
chemical elements
boron
sediments
geochemistry
ISW, India, Goa, Mandovi estuary
 
Description Boron in the sediments of Mandovi estuary varied from 8.0 to 258.0 ppm with an average of 118 ppm. It showed an inverse relation to the texture of sediments and was found to be concentrated in silt and clay fraction with generally decreasing concentrations from mouth towards upstream. Seasonal variations of boron indicate all higher values during pre-monsoon (50.8 to 216.0 ppm; av. 128 ppm) while very low to very high concentrations during post-monsoon (8.0 to 258.0 ppm; av. 108 ppm). During monsoon itself narrow range was observed with moderate concentrations (87.0 to 148.0 ppm; av. 118 ppm). Clay minerals by x-ray diffractometry of sediments showed the presence of Kaolinite + chlorite (av. 60%), Illite (av. 15%) and Montmorillonite (av. 6.5%) while the non-clay minerals like Feldspar (av. 4.84%) and Quartz (av. 8.67%) were found all along the estuary and the Gibbsite (av. 9.84%) was found only in the upstream
 
Date 1995-06-21T10:01:39Z
2017-09-30T01:29:50Z
1995-06-21T10:01:39Z
2017-09-30T01:29:50Z
1988
 
Type Journal Article
 
Identifier Mahasagar, vol.21; 1988; 45-54
0542-0938
http://drs.nio.org/drs/handle/2264/7099
 
Language en
 
Relation Mahasagar
NON-SCI
 
Publisher Indian Association for Limnology and Oceanography