Informatics Publishing Limited

G. N. Rao ¹

Affiliations
1 Oil and Natural Gas Commission, Rajahmundry 533103, IN

Abstract

The Eastern continental margin of the Indian Peninsula has a complex geoiogical history. Due to fragmentation of Gondwanaland the Peninsula was separated and became the mobile Indian plate. The ' Godavari bend ' of the East coast coincides with triple junction of the diverging plates. Palaeozoic to Early Mesozoic sedimentation in the East coast basins is of continental nature and is restricted to rift grabens. The easterly tilt of the Peninsula during its movemtnt gave rise to peri-cratonic sedimentary basins since the Cretaceous. These basins are extended oceanic basins with subsided pull-apart basins. Since Miocene, the cooling of the oceanic crust has facilitated more sedimentation in these basins. Basin configuration, tectonics and status of hydrocarbon exploration are discussed basinwise giving more emphasis to Krishna- Godavari Basin.

Keywords

East Coast Basins, Hydrocarbon Potential, Eastern Cnntinental Margin, Lower Gondwana, Gondwanaland.

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G. N. Rao ¹

Affiliations
1 ONGC, Rajahmundry-533 103, IN

Abstract

Recent advances in electric logs make it possible to record the logs at very thin sampling interval. The natural radiation of rocks (gamma rays) can be analysed while recording itself into three basic components like K⁴⁰, Th²³², and U²³⁸. The electro-facies analysis can be used to interpret the nature of sedimentary environments. The interpretation techniques for identifying the nature of different sedimentary environents arc discussed with suitable examples of electric logs from Krishna-Godavari basin. Fracture identification procedure in case of basalts and extension direction of Paleogene reservoir sands are discussed. NGS ratio log can be used in identifying the debalable age boundaries.

Keywords

Andhra Pradesh, Electro Facies, Krishna-Godavari Basin, Geophysics.

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S. K. Mohinuddin ¹, K. Satyanarayana ¹, G. N. Rao ¹

Affiliations
1 Oil and Natural Gas Commission, Krishna-Godavari Project, Rajahmundry 533103, IN

Abstract

The NE-SW trending Krishna-Godavari Basin is located at right angles to NW-SE trending Pranhita-Godavari graben ? towards the basin margin. From subsurface exploratory data obtained, it is inferred that NW-SE trending Gondwana graben is .extending underneath Krishna-Godavari Basin. In subsurface, the sedimentary sequence occurring in between the basalt and the ' Red Bed ' is demarcated as the Cretaceous sequence. This sequence is further divisible into three litho-units as equivalents to Gollapalli sandstone, Raghavapuram shale and Tirupati sandstone.

The depositional environment for Gollapalli sandstone is interpreted to be mainly fluvial towards NW of Tanuku horst and paralic towards SE of the horst. The Raghavapuram shales were deposited under marine conditions. The upper part of Tirupati sandstone is of fluvial nature around Kommugudem area and changes gradually to paralic and to marine towards the southeastern part of the Basin.

Keywords

Gondwana, Krishna-Godavari Basin, Cretaceous, Red Bed.

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G. N. Rao

Abstract

Globally, pockets of 'neglected populations' do not have access to basic health-care services and carry a much greater risk of blindness and visual impairment. While large-scale public health approaches to control blindness due to vitamin A deficiency, onchocerciasis, and trachoma are successful, other causes of blindness still take a heavy toll on the population. High-quality comprehensive eye care that is equitable is the approach that needs widescale application to alleviate this inequity. L.V. Prasad Eye Institute of India developed a multi-tier pyramidal model of eye care delivery that encompasses all levels from primary to advanced tertiary (quaternary). This has demonstrated the feasibility of 'Universal Eye Health Coverage', including promotive, preventive, corrective, and rehabilitative aspects of eye care. Using human resources with competency-based training, effective and cost-effective care could be provided to many disadvantaged people.

Keywords

Glaucoma, Global Blindness, LVPEI Model, Neglected Population.

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G. N. Rao

Abstract

Historiography of the 19th century India is replete with lively debates on several aspects of the colonial economic policy such as Laissez faire, Free Trade, De-Industrialization, Land Tax, Economic Drain, etc. The railroad was one such issue that engaged the minds of the contemporary commentators, British civil servants, Indian Nationalist thinkers and the later-day academicians.

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G. N. Rao

Abstract

The agricultural economy of Coastal Andhra was in a state of stagnation in the early decades of the 19th Century. The permanent Zamindary Settlement which was introduced in the region during 1802-04 resulted in strained agrarian relations, a heavy burden of taxation and a parasitic and exploitative role played by the Pettandars (Village Leading Ryots) , Karnams (Village Accountants) and other Revenue Officials at the Taluk and District levels.' This had sapped the energies and curbed the incentives of the agricultural community.

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G. N. Rao ¹

Affiliations
1 Oil and Natural Gas Corporation Ltd., Kolkata, IN

Abstract

No Abstract.

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