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Distribution patterns of heavy minerals from the Northern part of the Godavari Delta off Kakinada

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Title Distribution patterns of heavy minerals from the Northern part of the Godavari Delta off Kakinada
 
Creator Mallik, Tapas Kumar
 
Description 51-56
Heavy mineral studies of 31 samples along 4 traverses off the northern part of the Godavari delta off Kakinada are reported in this paper. The Godavari pro-delta region is characterised by the presence of clays and silty clays. The delta growth advances by the accretion of the spit and primarily by sedimentation at the river mouth and is strongly influenced by the northerly longshore current. The study area can be divided into 4 sedimentary petrologic provinces: Vokalpudi nearshore province-characterised by muscovite, biotite, opaques, tremolite/actinolite and clinopyroxene; Vokalpudi, offshore province-characterised by garnet, sillimanite, orthopyroxene, opaques and hornblende;Sand-spit offshore province-characterised by an elongated north south zone consisting of a mixed mineral assemblage like hornblende,opaques,muscovite,biotite,epidote,zircon,and Relict offshore province-characterised by a patch of tremolite/actinolite or zircon. The sediments have been derived mainly from the charnockite, khondalite and granite gneisses of the Eastern Ghats. Distribution of the minerals across the shore is difficult to generalise in terms of steady increase or decrease. The present mineralogical variations and products are influenced by basic parameters like river regime, longshore current, etc.
 
Date 2016-12-21T09:48:51Z
2016-12-21T09:48:51Z
1981-03
 
Type Article
 
Identifier 0975-1033 (Online); 0379-5136 (Print)
http://nopr.niscair.res.in/handle/123456789/39027
 
Language en_US
 
Rights CC Attribution-Noncommercial-No Derivative Works 2.5 India
 
Publisher NISCAIR-CSIR, India
 
Source IJMS Vol.10(1) [March 1981]