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Kumar, R. S.
- Groundwater Hydrogeochemical Characterization of Chittar Sub Basin, Tambaraparani River, Tirunelveli District, Tamil Nadu
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Authors
Affiliations
1 Department of Earth Sciences, Annamalai University, Annamalainagar-608 002, T.N., IN
2 University of Pondicherry, Pondicherry, IN
1 Department of Earth Sciences, Annamalai University, Annamalainagar-608 002, T.N., IN
2 University of Pondicherry, Pondicherry, IN
Source
Nature Environment and Pollution Technology, Vol 9, No 1 (2010), Pagination: 133-140Abstract
Hydrogeochemical characterization of 82 groundwaters has been done in Chittar sub basin of Tambaraparani river, Tirunelveli District. In this attempt major cations and anions were analysed and other parameters were calculated. The pH and EC varied from 6.60 to 8.50 and 115 μmhos/cm to 9780 μmhos/cm. The TDS and Total hardness varied from 81mg/L to 6846 mg/L and 40 mg/L to 1818 mg/L. The range of chemical concentration of cations such as Ca, Mg, Na, K and anions like Cl, HCO3, SO4, NO3 varied from 12 mg/L to 533 mg/L, 3 mg/L to 116 mg/L, 9 mg/L to 3255 mg/L, 1.0 to 89.0 mg/L and 9 mg/L to 2904 mg/L, 45 mg/L to 691 mg/L, 2 mg/L to 237 mg/L, 1 mg/L to 16 mg/L respectively. SAR ranges from 0.592 to 22.82 and the RSC varied from 32.46 to 5.48. The results show that certain groundwater sample locations exceed the maximum permissible limit but exceeding the desirable limit of WHO standard for drinking. The attempt revealed the present level of element contamination and source of the ionic contribution in the study area.Keywords
Chittar Sub-Basin, Hydrogeochemistry, Tambaraparani River, Groundwater Pollution, SAR.Full Text
- Occurrence of kornerupine-bearing granulite from Kunjan locality, Salem district, Tamil Nadu, India
Abstract Views :193 |
PDF Views:79
Authors
D. Prakash
1,
C. K. Singh
1,
R. S. Kumar
2,
R. Yadav
1,
S. K. Rai
1,
M. K. Yadav
3,
Pradip K. Singh
1,
S. Jaiswal
1
Affiliations
1 Centre of Advanced Study in Geology, Banaras Hindu University, Varanasi 221 005, IN
2 Department of Earth Sciences, Annamalai University, Annamalai Nagar 608 002, IN
3 Centre of Advanced Study in Geology, University of Lucknow, Lucknow 226 007, IN
1 Centre of Advanced Study in Geology, Banaras Hindu University, Varanasi 221 005, IN
2 Department of Earth Sciences, Annamalai University, Annamalai Nagar 608 002, IN
3 Centre of Advanced Study in Geology, University of Lucknow, Lucknow 226 007, IN
Source
Current Science, Vol 121, No 9 (2021), Pagination: 1241-1248Abstract
Kornerupine, although a rare mineral, has been reported from several locations around the world in various types of aluminomagnesian Proterozoic rocks subjected to amphibolite and granulite facies metamorphism. Here we report the occurrence of kornerupine in quartzo-feldspathic gneisses near Kunjan town located in the southwestern part of Salem district, Tamil Nadu, India. These kornerupine granulites show well-preserved retrogression texture, involving hydration reactions which helped develop the various mineral assemblages. The common stable assemblage in these granulites is orthopyroxene–cordierite–kornerupine–biotite–spinel–K-feldspar–plagioclase. The P–T conditions of these granulites have been derived using the winTWQ program, which gives results of ~800°C and ~6 kbar for kornerupine-bearing assemblage. The high P–T assemblage reported from this area bears a significant relationship with the metamorphic history and exhumation of the Salem–Namakkal blockKeywords
Hydration reactions, kornerupine granulites, metamorphic evolution, mineral assemblages, retrogression texture.Full Text
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