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Singh, V. P.
- Geochronological and Geological Studies on a Granite of Higher Himalaya, Northeast of Manikaran, Himachal Pradesh
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Authors
Affiliations
1 Physics Department, Panjab University, Chandigarh, IN
2 Geological Survey of India, Sector-17, Chandigarh, IN
1 Physics Department, Panjab University, Chandigarh, IN
2 Geological Survey of India, Sector-17, Chandigarh, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 20, No 2 (1979), Pagination: 90-94Abstract
Rb-Sr whole-rock data is presented for a biotite-granite of Central Crystallines. The whole-rock isochron age is found to be 467±45 m.y. This should represent the time of intrusion of the granite. A brief account of the geology and petrography is also presented. The age of the biotite is found to be 8.8±2.0 m.y., which is the youngest Rb-Sr age reported so far for a mineral from the Himalaya. This fixes the period when the rocks of this area, after being heated and uplifted, cooled to a temperature of about 300°C.
- Analyses of Ground Magnetic Anomalies Over a Part of Vindhyan Basin around Damoh and Jabalpur Districts, Madhya Pradesh
Abstract Views :178 |
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Authors
Affiliations
1 Department of Geophysics, Banaras Hindu University, Varanasi - 221005, IN
1 Department of Geophysics, Banaras Hindu University, Varanasi - 221005, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 50, No 1 (1997), Pagination: 41-48Abstract
Detailed ground magnetic survey over a part of the Vindhyan basin around Damoh and Jabalpur (40 km either sides of Hirapur-Mandala DSS profile) has been carried out. The magnetic field anomaly map is characterised by dense contours in trap covered areas near Jabalpur where as the Vindhyans show sparsely distributed contours with several lows. Spectrum analysis of total ground magnetic field anomalies reveals the average thickness of Vindhyans to be 3.9 km and depth of Conrod to be 15km. The average thickness of Vindhyans is in conformity with the Deep Seismic Sounding results of the region. The thickness of Vindhyan sediments along four profiles ranges from 1.5km to 5km. The maximum thickness of Vindhyan sediments at Jabera has been derived to be 4.8km which is close to the results of Oil and Natural Gas Corporation Ltd., Dehradun.Keywords
Geophysics, Vindhyan Basin, Magnetic Anomaly, Jabalpur, Madhya Pradesh.- Structural Appraisal of Parts of Archaeans, Satpuras and Chhattisgarh Basins Around Mandala - Raipur Districts, M.P., India, Using Total Magnetic Field Data
Abstract Views :182 |
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Authors
Affiliations
1 Department of Geophysics, Banaras Hindu University, Varanasi - 221 005, IN
1 Department of Geophysics, Banaras Hindu University, Varanasi - 221 005, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 50, No 6 (1997), Pagination: 709-716Abstract
Detailed ground magnetic surveys over parts of Archaeans. Satpuras and Chhattisgarh basins belonging to different ages around Mandala-Raipur has been carried out. Detailed investigations provide depth of magnetic sources, basement structural trend. nature of intrusive bodies and thickness of sediments in the basins. The basement structural trend along the five profiles in Archaeans (AA'and BB'), Satpuras (CC') and Chhattisgarh (DD' and EE') have been derived which ranges from 1.5 to 3.5 km. The Archaean and Chattisgarh basins show two dyke like features at depth of 0.28 and 1.26 km. It also reflects upwarping of the basement along the profiles.Keywords
Geophysics, Intracratonic Basins, Archaeans, Satpuras, Chhattisgarh, Magnetic Anomaly.- Environmental Implication on Chamber Accretion of Neogloboquadrina pachyderma (Ehrenberg) in Southern Indian Ocean
Abstract Views :194 |
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Authors
Affiliations
1 National Centre for Antarctic and Ocean Research (Ministry of Earth Sciences), Headland Sada, Goa - 403 804, IN
2 Department of Geology, Banaras Hindu University, Varanasi - 221 005, IN
1 National Centre for Antarctic and Ocean Research (Ministry of Earth Sciences), Headland Sada, Goa - 403 804, IN
2 Department of Geology, Banaras Hindu University, Varanasi - 221 005, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 73, No 3 (2009), Pagination: 379-385Abstract
Morphological variations with respect to the number of chambers in Neogloboquadrina pachyderma (Ehrenberg) were investigated in 25 surficial sediments of Indian Ocean taken along the N-S transect between 9.69° N and 55.01° S latitude and 80° E and 40° E longitude. The number of chamber was counted for at least 40 specimens picked for each sample. The average number of chamber was correlated with the average temperature and salinity along the changing latitude. The results showed a high correlation between the number of chambers and temperature and salinity. It was noted that number of chambers decreases from equatorial to polar region. The carbonate saturation and nutrient availability could possibly be other causes for the change in number of chambers. The results of this study, if applied on the subsurface marine sediments, will bear implications on paleoclimatic condition in the Indian Ocean region.Keywords
Neogloboquadrina pachyderma, Number of Chambers, Temperature and Salinity, Equatorial to Polar Region, Indian Ocean.References
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- Need of Groundwater Management in Tannery Belt: A Scenario about Dindigul Town, Tamil Nadu
Abstract Views :192 |
PDF Views:318
Authors
N. C. Mondal
1,
V. P. Singh
2
Affiliations
1 NGRI, Hyderabad, IN
2 TAMU, Texas, US
1 NGRI, Hyderabad, IN
2 TAMU, Texas, US
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 76, No 3 (2010), Pagination: 303-309Abstract
No Abstract.Full Text