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

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Gravity Investigations for Structural Mapping in the Makthal Region, Andhra Pradesh


Affiliations
1 Center of Exploration Geophysics, Osmania University, Hyderabad - 500 007, India
2 National Geophysical Research Institute, Hyderabad - 500 007, India
     

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Semi-Detailed gravity surveys were carried out over an area of approximately 1500 Sq km in and around Makthal(Mahboobnagar district, Andhra Pradesh) in the eastern Dharwar craton to evaluate the structural configuration of the region. Two major, linear deep-Seated faults, one running NW-SE and the other N-S, and several other lineaments were identified from the qualitative analysis of the Bouguer gravity data. The zones of intersection of these structural trends which could have acted as potential sites for kimberlite emplacement, were accordingly delineated.

The near surface as well as deep crustal configuration in the region was obtained via the inversion of a NE-SW trending gravity profile obtained by digitizing the Bouguer gravity contour map. From the disposition of the crustal layers, a total of five faults were inferred, revealing the structural configuration of the region. These faults were found to correlate well with faults/Lineaments inferred from qualitative analysis.


Keywords

Gravity Surveys, Structural Configuration, Kimberlite Emplacement, Eastern Dharwar Craton, Makthal, Andhra Pradesh.
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  • Gravity Investigations for Structural Mapping in the Makthal Region, Andhra Pradesh

Abstract Views: 189  |  PDF Views: 2

Authors

G. Ramadass
Center of Exploration Geophysics, Osmania University, Hyderabad - 500 007, India
I. B. Ramaprasadarao
Center of Exploration Geophysics, Osmania University, Hyderabad - 500 007, India
D. Himabindu
Center of Exploration Geophysics, Osmania University, Hyderabad - 500 007, India
B. Veeraiah
National Geophysical Research Institute, Hyderabad - 500 007, India

Abstract


Semi-Detailed gravity surveys were carried out over an area of approximately 1500 Sq km in and around Makthal(Mahboobnagar district, Andhra Pradesh) in the eastern Dharwar craton to evaluate the structural configuration of the region. Two major, linear deep-Seated faults, one running NW-SE and the other N-S, and several other lineaments were identified from the qualitative analysis of the Bouguer gravity data. The zones of intersection of these structural trends which could have acted as potential sites for kimberlite emplacement, were accordingly delineated.

The near surface as well as deep crustal configuration in the region was obtained via the inversion of a NE-SW trending gravity profile obtained by digitizing the Bouguer gravity contour map. From the disposition of the crustal layers, a total of five faults were inferred, revealing the structural configuration of the region. These faults were found to correlate well with faults/Lineaments inferred from qualitative analysis.


Keywords


Gravity Surveys, Structural Configuration, Kimberlite Emplacement, Eastern Dharwar Craton, Makthal, Andhra Pradesh.