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Textural characteristics of the surface sediments of a Tropical mangrove ecosystem Gulf of Kachchh, Gujarat, India

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Title Textural characteristics of the surface sediments of a Tropical mangrove ecosystem Gulf of Kachchh, Gujarat, India
 
Creator Kumar, Goutam
Ramanathan, AL
Rajkumar, K
 
Subject Grain size
Mangroves
Gulf of Kachchh
Gujarat
 
Description 415-422
Mangroves in gulf of Kachchh, Gujarat, India has been studied for grain
size spectrum and textural parameters namely phi mean, standard deviation,
skewness and kurtosis. Grain size spectrum shows a marked variation in the
upstream riverine input stretch. Variation of energy conditions is controlled
by the fluvial profile in the channel. Textural pattern shows complicated
profile as a result of the fluctuation in the physico-chemical conditions due
to fluvial-marine interaction. Abundance of very fine sand to fine sand shows
the prevalence of comparatively low energy condition in the mangrove creek
zones. Linear
Discriminate Function Analysis (LDF) of the samples indicates shallow marine
environment origin for all samples collected from this mangrove ecosystem. Riverine sediments show a wide range of
textural facies including muddy sand. It has also been observed that a
progressive enrichment of silty-sand in the downstream region. CM diagram
(C= one percentile in microns, M=Median in microns) of Gulf of Kachchh
sediments suggests that deposition takes place by (1) rolling (2) rolling and
suspension and (3) graded suspension. Rolling and suspension population is
dominant in the river/creeks deposits, which is also supported by uniform grain
size distribution of sediment load augmented by turbidity current.
 
Date 2010-11-19T11:28:51Z
2010-11-19T11:28:51Z
2010-09
 
Type Article
 
Identifier 0975-1033 (Online); 0379-5136 (Print)
http://hdl.handle.net/123456789/10677
 
Language en_US
 
Rights CC Attribution-Noncommercial-No Derivative Works 2.5 India
 
Publisher NISCAIR-CSIR, India
 
Source IJMS Vol.39(3) [September 2010]