A B C D E F G H I J K L M N O P Q R S T U V W X Y Z All
Singh, N. N.
- Dyssynergia Cerebellaris Myoclonica
Authors
1 Affiliation not given, IN
2 All-India Institute of Medical Sciences, New Delhi, IN
Source
The Indian Practitioner, Vol 27, No 3 (1974), Pagination: 151-153Abstract
Abstract not Given.Keywords
No Keywords given
- Tectonic and Stratigraphic Framework of the Lead-Zinc Sulphide Mineralisation at Zawarmala, District Udaipur, Rajasthan
Authors
1 Hindustan Zinc Limited, Rajpura-Dariba Mines, District Udaipur, Rajasthan, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 31, No 6 (1988), Pagination: 546-564Abstract
The carbonate-hosted lead-zinc sulphide mineralisation of Zawarmala belongs to the early Proterozoic rocks of the Aravalli Supergroup. The floor of the Aravalli sedimentation was a peneplained Archaean basement whose antiquity, as revealed by the recent Sm/Nd isotope studies, dating back to 3.5 billion years ago. The sedimentary package of the Arava11i Supergroup represents a sequence showing a distinct dichotomy in its depositional and lithological characters. The sulphide mineralisation is entirely confined to the near-shore shelf sequence which shows diverse lithofacies association of carbonates, black shales, argillites and arenites. By contrast, the distal (deep water) facies rocks which do not show any sign of syngenetic mineral deposits of any kind, is a totally carhonate-free sequence of argillites with thin bands of arenites.
The Aravalli Supergroup includes two groups separated by an unconformity marked by conglomerates and palaeo-erosional surfaces. The lead-zinc sulphide ores are confined to the carbonate sequence which occurs in the Upper Aravalli Group. Studies on the host rocks and the orebodies indicate a common plan of deformation and metamorphism. The geometry of the ore lenses suggests a very strong influence of the second deformation (AF2). This is also apparent in the trend surface maps showing distribution pattern of the metals-lead and zinc. Localisation of sphalerite, galena, and pyrite-bearing orebodies indicates differential mobilisation of these minerals in response to repeated deformation and metamorphism under a low temperature condition. The present study reveals a polygenetic history of the Zawarmala ore-bodies comparabte with those proposed for 'Alpine or Mississippi ValIey' types.
- Control of Sulphide Mineralization at Bhotang Sulphide Deposit (Sikkim)
Authors
1 Maton Rockphosphate Mines, Hindustan Zinc Limited, Udaipur, Rajasthan, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 38, No 6 (1991), Pagination: 593-597Abstract
The copper-zinc-lead sulphide mineralization of Bhotang is confined to the Dalling Group of eastern Himalaya. Confinement of the sulphide mineralization within a litho-unit, and its strong preference to planar and linear fabrics suggests litho-structural control. The dimensional variability and geometrical shape and size of the ore body is the result of later deformational influences. Pinch and swell structure in the ore lenses is common. The arc body shows pronounced zoning. Localization of sphalerile, galena and chalcopyrite indicates differential mobilization in response to repeated deformation and metamorphism under varying temperature conditions. The mode of occurrence of the polymetallic sulphide bodies, their attitudes, dimensional significance and control are described.Keywords
Sulphide Mineralization, Bhotang, Sikkim.- Indian Peninsular Precambrian Terrain and Metal Potential: A New Approach
Authors
1 68 B Sector-9 Hiranmagn, Savina, Udaipur 313 013, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 63, No 3 (2004), Pagination: 345-349Abstract
No Abstract.Full Text
- Relative Efficacy of Opaque-2 Maize in the Growth of Preschool Children
Authors
1 Indian Agricultural Research Institute, New Delhi-110 012, IN