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Prakash Narasimha, K. N.
- Chemical Character of Detrital Garnet in Cauvery River Sediment and its Provenance, South India
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Authors
Affiliations
1 Department of Geology, Anna University, Chennai-600025, Tamil Nadu, IN
2 Department of Studies in Earth Sciences, University of Mysore, Mysore-570006, Karnataka, IN
1 Department of Geology, Anna University, Chennai-600025, Tamil Nadu, IN
2 Department of Studies in Earth Sciences, University of Mysore, Mysore-570006, Karnataka, IN
Source
International Journal of Earth Sciences and Engineering, Vol 10, No 4 (2017), Pagination: 752-756Abstract
The study attempts to determine the chemical characters of detrital garnets provenance in the Cauvery River Basin. The geochemical results reveal that the detrital garnets are derived from biotite schist, charnockite, and gneisses of intermediate felsic, moderate to strong weathered provenance. The end member composition of the garnets indicates almandine species that are metamorphosed in amphibolite to granulite facies P-T conditions. The angular outline of detrital garnet in the upstream and sub-rounded to rounded grains in the downstream attribute it’s transport from the upstream of the Cauvery River.Keywords
Detrital Garnet, Mineral Chemistry, Provenance, Cauvery River.Full Text
References
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- Mafic Rock Hosted Vermiculite Occurrence From Ajjampalli Area, Kolar Schist Belt, Eastern Dharwar Craton, South India
Abstract Views :150 |
PDF Views:99
Authors
Affiliations
1 Department of Studies in Earth Science, University of Mysore, Manasagangotri, Mysore-570006, IN
2 Department of Studies in Geology, Karnatak Science College, Dharwad, Karnataka, IN
1 Department of Studies in Earth Science, University of Mysore, Manasagangotri, Mysore-570006, IN
2 Department of Studies in Geology, Karnatak Science College, Dharwad, Karnataka, IN
Source
International Journal of Earth Sciences and Engineering, Vol 9, No 1 (2016), Pagination: 150-156Abstract
The vermiculite in its macroscopic form occurs associated with the mafic rocks in the vicinity of the acidic intrusions around Ajjampalli area in the Kolar schist belt in south India. Mafic rocks form part of the ancient supracrustals and belong to Sakarsanahalli association in the Kolar schist belt of Eastern Dharwar craton. The study area is covered in the Survey of India toposheet 57L/1 and lies between the 12058’ latitude and 78014’ longitude. The present study forms the first detailed investigation of the occurrence of the macroscopic vermiculites in the Ajjampalli area in Kolar schist belt. The study involves field and Petrographic features linked with the mineral chemistry aspects to understand the genesis of vermiculites. XRD, TGA and FTIR techniques have been used to characterize the vermiculites of the study area. The formation of vermiculite in the study area is attributed to the hypogene process followed by epigene process through an intermediate stage of hydrobiotite.Keywords
Vermiculites, Kolar Schist Belt, Eastern Dharwar Craton, Hydrobiotite.Full Text