Journal of Geological Society of India (Online archive from Vol 1 to Vol 78)

H. N. Singh ¹, P. V. Panchanathan ¹, K. R. Unnikrishnan ¹

Affiliations
1 Centre for Earth Science Studies, Trivandrum 695 010, IN

Abstract

Forty-one gravity bases were established with a Worden gravimeter in parts of Palghat gap area bordering Kerala and Tamil Nadu. The description of these base stations and the observed gravity values are presented. The observed gravity values at these stations are with reference to a value of 978.0715 gals at the Coimbatore Airport, established by the National Geophysical Research Institute, Hyderabad. The accuracy of the observed gravity values is estimated to be 0.07 mgal. The new base stations are being used for regional gravity surveys.

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G. K. Raju ¹, K. R. Unnikrishnan ¹, H. N. Singh ¹, K. Vijayakumar ¹

Affiliations
1 Centre of Earth Science Studies, Trivandrum, IN

Abstract

No Abstract.

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N. Sundararajan ¹, Y. Srinivas ¹, M. Narasimha Chary ², K. R. Unnikrishnan ³

Affiliations
1 Centre of Exploration Geophysics, Osmania University, Hyderabad - 500 007, IN
2 Atomic Minerals Directorater of Exploration and Research, Department of Atomic Energy, Begumpet, Hyderabad - 500 01 6, IN
3 Centre of Earth Science Studies, Camp Office Elamakara-Post, Cochin - 682 026, IN

Abstract

The groundwater occurrence along the contacts of sandstone outlier in biotite gneiss near Tiruvuru, Krishna district, Andhra Pradesh, was investigated by electrical resistivity survey. The depth and width of such contacts were established from geoelectrical sections drawn based on vertical electrical sounding (VES). Results obtained are correlated with the geology and the bore well data of the area.

Keywords

Groundwater, Resistlivity Survey, Modelling, Geological Contacts, Tiruvuru, Krishna District, Andhra Pradesh.

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