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Bhattacharya, A.
- Garnet + 2 Sillimanite = 3 mg-Spinel + 5 Quartz Equilibrium-A Potential Geobarometer
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Authors
Affiliations
1 Department of Geology and Geophysics, Indian Institute of Technology, Kharagpur 721 302, IN
1 Department of Geology and Geophysics, Indian Institute of Technology, Kharagpur 721 302, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 28, No 6 (1986), Pagination: 473-479Abstract
A geobarometer based on the equilibrium Mg3Al2Si3O12 + 2Al2SiO5 (sillimanite) = 3MgAl2O4+5SiO2 has been proposed. The geobarometric expression can be stated as P(bar)=9.68 T - 7106 + 10.307 T In (agarnetMg3Al2Si3O12)1/3/(aspinelMgAl2O4). Application of the proposed geobarometric formulation to some metapelites indicates that it registers reasonable pressure values which are in good agreement with the recommended pressure values for different terranes.- LANDSAT Image Enhalncement for Mapping Fluvial Palaeofeatures in parts of Middle Ganga Basin, Bihar
Abstract Views :183 |
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Authors
Affiliations
1 Department of Earth Sciences, University of Roorkee, Roorkee 247667, IN
2 National Remote Sensing Agency. Balanagar. Hyderabad 500037, IN
1 Department of Earth Sciences, University of Roorkee, Roorkee 247667, IN
2 National Remote Sensing Agency. Balanagar. Hyderabad 500037, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 37, No 1 (1991), Pagination: 63-74Abstract
An area in the Middle Ganga Basin, lying around Monghyr, Bihar, has been selected for delineation of fluvial palaeofeatures. The investigation is based on aerial photographs LANDSAT MSS and TM data products and ground data. Digital enhancement of LANDSAT MSS and TM data by linear contrast stretching and ratioing has been found to be highly powerful in identification and mapping of subtle fluvial palaeofeatures. Based on the above interpretation, a summary of the fluvial palaeo-history is presented.Keywords
LANDSAT, Ganga Basin, Geomorphology, Bihar.- Petrochemistry of a Gametiferrous Chlorite Schist Horizon from the Sandur Schist Belt, Karnataka
Abstract Views :227 |
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Authors
Affiliations
1 Geological Cell, GM Ofice, Barkakana Area, PO: NTS Barkakana-829103, Bihar, IN
2 Geology and Geophysics Department, IIT, Kharagpur-721302, IN
1 Geological Cell, GM Ofice, Barkakana Area, PO: NTS Barkakana-829103, Bihar, IN
2 Geology and Geophysics Department, IIT, Kharagpur-721302, IN