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Subrahmanyam, S.
- Gravity Surveys for Lignite in Parts of Soutb Arcot and Tiruchchirappalli Districts, Tamil Nadu
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Authors
Affiliations
1 Geological Survey of India, Hyderabad, IN
1 Geological Survey of India, Hyderabad, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 37, No 3 (1991), Pagination: 264-271Abstract
Lignite occurs within the Cuddalore sandstones of the Tertiary Group. The Bouguer gravity map has demarcated the basin with the axis extending from north to south passing close to Andirnatam, with steep gradients towards east and south. The residual gravity map has revealed three broad negative zones, comprising several gravity closures with magnitudes varying from -0.2 to as much as -1.7 milligals. Only a fraction of the anomaly could have been caused by the lignite body. It is likely that these zones indicate possible local depressions forming troughs or sub-basins where lignite deposits are likely to be confined. The boundaries of the lignite-bearing zones are fairly well marked. Drilling in two zones has proved the presence of lignite seams of 3 to 14 metres thickness at depths varying from 67 to 135 metres. The surveys have proved that the gravity method could advantageously be employed for delineating zones favourable for lignite deposits in similar environs.Keywords
Geophysics, Gravity Survey, South Arcot, Tiruchchirappalli, Tamil Nadu, Lignite.- Agricultural Tenancy in India: Growth Promoting or Growth Retarding
Abstract Views :477 |
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Authors
Affiliations
1 Centre for Economic and Social Studies, Begumpet, Hyderabad 500 016, IN
1 Centre for Economic and Social Studies, Begumpet, Hyderabad 500 016, IN
Source
Artha Vijnana: Journal of The Gokhale Institute of Politics and Economics, Vol 42, No 4 (2000), Pagination: 350-359Abstract
Tenancy is gaining significance in Indian agriculture in recent times. It takes the form of fixed rent in the areas of assured irrigation and sharecropping in the areas of uncertain irrigation and low cropping intensity. With high use df purchased inputs like chemical fertilizers and pesticides, the importance of tenancy declined in rain-fed agriculture. There is no evidence of inter-linked transactions of land, labour and credit in the areas studied in Andhro Pradesh. On the other hand, tenancy leads to increase in labour use, cultivation of high valued crops, high participation of family labour and development of non-farm activities like dairying. Though tenancy agreements are oral and for short period, there is no frequent change of tenants. However, legalizing tenancy confers certain benefits to the tenants like access to the credit and insurance markets and removes imperfections in the land markets like choosing the tenant on the basis of caste.- Inter Industry Transactions in a District
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