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Geochemistry of Mafic Dykes of Chittoor District, Andhra Pradesh, Southern India

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1TitleTitle of DocumentGeochemistry of Mafic Dykes of Chittoor District, Andhra Pradesh, Southern India
2CreatorAuthor's name, affiliation, country D. B. SANKAR, Y. V. REDDY and K. S. SAI PRASAD
Department of Geology, Sri Venkateswara University, Tirupati - 517502, India
3SubjectDicipline(s) Chemical Science
3SubjectKeywords Mafic dykes, Geochemistry, Petrogenesis, Subalkaline and alkaline
4DescriptionAbstract Mafic dykes are a kind of minor intrusions, usually occur within granitic pluton in Chittoor district, Andhra Pradesh, India. The origin of these dykes and its implications to the formation of granitic plutons in Chittoor were studied. The analytical results suggest that these mafic dykes are alkali dolerite and derived from continental arc. The mafic dyke samples contain 5.61wt % MgO; exhibit negative Ba, Nb, Sr, Zr and Ti anomalies and they are enriched in Cs, Rb, U, K, Nd and Sm. It suggests that the mafic dykes are subduction related and contaminated during their intrusion. It is concluded that mantle wedge melting during the subduction process and basaltic underplating had provided the necessary heat to cause partial melting of continental crust, and generation of voluminous felsic magma.
5PublishersOrganizing agency, location WWW Publications, India
6Contributor Sponsor(s) -
7DateDate (YYYY-MM-DD) -
8TypeStatus & genre Peer-reviewed Article
8TypeType
9FormateFile Formate PDF
10IdentifierUniform Resource Identifier Click Here
10IdentifierDigital Object Identifier DOI:10.7598/cst2014.822
11SourceJournal/conference title; vol., no. (Year)Chemical Science Transactions, Volume  3 , Number  (3), (2014)
12LanuguageEnglish=en en
13RelationSupp.files
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Chemical Science Transactions | Chem Sci Trans | CST | Online Chemistry Journal | Open Access
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