• S M Varaprasada Rao

      Articles written in Journal of Earth System Science

    • An analytical technique for rapid determination of surface rock density

      G Ramadass S M Varaprasada Rao M S Vijaya Raghava

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      Computation of the coefficient of correlation between the Bouguer reduced gravity and the ground relief apparently helps minimize the subjectivity inherent in the Nettleton’s method of surface rock density determination. The ideal density is the one that results in zero correlation between them. The iterative procedure in sweeping the calculations through the range of densities chosen can be avoided by taking advantage of the linear relationship between this coefficient and the density. Linear interpolation is therefore suggested to arrive at the ideal density. The suggested procedure consequently consists of correlation coefficient computations for the two-density extremum values within which the density of the surface rock formations is expected to lie. The computer program for this method is also presented. The procedure involved and the efficacy of the method are illustrated with some practical analyses.

    • Base metal exploration by gravity surveys in a part of the Cuddapah basin (India)—A case study

      G Ramadass S M Varaprasada Rao N L Mohan

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      A closely spaced gravity survey was conducted in the Chikativaripally area in the Cuddapah basin, Andhra Pradesh, India for base metal exploration. Analysis of the data using two-dimensional prismatic models suggest a doubly plunging folded structure in the area and also its associated mineralization.

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