1Geology Department, Osmania University, Hyderabad-500 007, T. S., India
2Keshav Memorial Institute of technology, Narayanguda, Hyderabad-500 029, T. S., India, Email: gbalakotaiah@yahoo.co.in
Online published on 14 February, 2017.
An area of about 150 sq. km has been mapped during the years 2013 and 2014 on 2 cm to 1 km scale in Khammam district of Telangana State. The region lies between Long. 80° 30’E-80°41’E and Lat. 17° 15’N-17° 21’ N of Survey of India topo-sheet no: 65 C/11. About 200 rock specimens were collected representing the different types and out of them 100 thin sections were prepared, they have been studied for their mineralogical and textural relationships. Lithologically, the area represents an amazing diversity of regional metamorphic rocks ranging from the epidote-amphibolite facies to the granulitic facies of metamorphism.
Six rock samples of charnockites have been chemically analyzed for major and trace elements. Petrochemical calculations including Niggli values and CIPW norms have been carried out. Two co-ordinate and three co-ordinate diagrams based on these calculations have been constructed to decipher the petro-genesis of charnockites. Geo-chemical data and geo-chemical trends strongly support the igneous origin for the charnockites.
Origin of Charnockites along the villages……. Khammam district, T. S, India
