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Subrahmanya, K. R.
- The Structure of Arsikere Granite, Mysore State
Abstract Views :365 |
PDF Views:2
Authors
Affiliations
1 Department of Geology, Bangalore University, Bangalore, IN
1 Department of Geology, Bangalore University, Bangalore, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 13, No 1 (1972), Pagination: 59-65Abstract
Structural study of the Arsikere granite and the surrounding gneisses, has revealed that the former is intrusive into the latter. The planar and linear elements indicate that the granite was emplaced through injection of viscous magma in a north-easterly direction. The possibility that the Arsikere and Banavar granites form cupolas of a single batholith is also indicated.
- Evolution of the Western Ghats, India- A Simple Model
Abstract Views :181 |
PDF Views:4
Authors
Affiliations
1 Department of Marine Geology, Mangalore University, Mangalagangotri 574199, IN
1 Department of Marine Geology, Mangalore University, Mangalagangotri 574199, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 29, No 4 (1987), Pagination: 446-449Abstract
The nature of origin of Western Ghats is being debated for several decades. In the light of modern developments in the field of earth sciences, this paper postulates that the western margin of India originated due to a combination of the following factors:
a) Crustal doming and rifting which preceded the drifting of the Indian subcontinent, resulting in an initial escarpment along the western margin of India.
b) Recession of the Ghats to the east due to marine erosion;
c) Withdrawal of the sea during the glacial period exposing part of the continental shelf as a coastal plain.
d) Development of westerly drainage.
e) Fluvial erosion of western ghats and coastal plain, and
f) Gradual post glacial rise in sea level resulting in drowned valleys, estuaries and lagoons.
This model is substantiated by a few evidences and offers a satisfactory explanation for the controversy concerning the origin of western ghats.
- Late Quaternary Sedimentation Records on the Continental Slope off Southwest Coast of India - Implications for Provenance, Depositional and Paleomonsoonal Conditions
Abstract Views :190 |
PDF Views:2
Authors
Affiliations
1 Centro de Investigacion en Energia, UNAM, Priv. Xochicalco s/no., Col Centro, Apartado Postal 34, Temixco, Mor. 62580, MX
2 0cean Science and Technology Cell, Mangalore University, Mangalagangotri 574199, IN
3 Earth Science Division, Physical Research Laboratory, Navrangpura, Ahmedabad 380 009, IN
1 Centro de Investigacion en Energia, UNAM, Priv. Xochicalco s/no., Col Centro, Apartado Postal 34, Temixco, Mor. 62580, MX
2 0cean Science and Technology Cell, Mangalore University, Mangalagangotri 574199, IN
3 Earth Science Division, Physical Research Laboratory, Navrangpura, Ahmedabad 380 009, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 69, No 6 (2007), Pagination: 1285-1292Abstract
Organic matter in sediment layers of two sediment cores from the continental slope off southwest coast of India was dated by radiocarbon method and sedimentation rates were estimated. The age data show lateral and temporal variations in sediment accumulation rates. Sedimentation rates decrease gradually from the inner shelf to the deep-sea in the study area, with an exception at 332 m water depth. The sediment accumulation rates on the shallower continental slope (332 m water depth; 0.003-0.013 mm/yr) are lower than on the deeper slope (776 m water depth; 0.071-0.190 mm/ yr) during the entire period of core deposition (32.8 ka BP to present). The unusually lower sedimentation rates on the shallower slope region may be the result of prevailing adverse depositional conditions. The sedimentation rates were lower during 32.80-18.98 ka BP and 16.04-8.69 ka BP and higher during 18.98- 16.04 ka BP and 8.69 ka BP to present day. The temporal variations in sedimentation rates reflect the changes in detrital input to the sea as a result of variations in intensity of paleomonsoonal conditions.Keywords
Sedimentation record, Paleomonsoon, Continental slope, Southwest coast.- Origin and Evolution of the West Coast of India
Abstract Views :170 |
PDF Views:117
Authors
Affiliations
1 Formerly of Mangalore University, 'Shwetadri', 1806/B, 7th Main, Kengeri, Bangalore - 560 060, IN
1 Formerly of Mangalore University, 'Shwetadri', 1806/B, 7th Main, Kengeri, Bangalore - 560 060, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 67, No 3 (2006), Pagination: 406-407Abstract
No Abstract.Full Text
- Tsunami and the Coastal Regulation Zone (CRZ)
Abstract Views :188 |
PDF Views:126
Authors
Affiliations
1 'Shwetadri ', 1806/B ,Kengeri Satellite Town, Bangalore - 560 060, IN
1 'Shwetadri ', 1806/B ,Kengeri Satellite Town, Bangalore - 560 060, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 65, No 6 (2005), Pagination: 769-769Abstract
No Abstract.Full Text
- Some Reflections on Sahyadri and the Indian Monsoon
Abstract Views :183 |
PDF Views:141
Authors
Affiliations
1 Shwetadri, 1806/B, 7th Main, Kengeri, Upanagara, Bangalore - 560 060, IN
1 Shwetadri, 1806/B, 7th Main, Kengeri, Upanagara, Bangalore - 560 060, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 64, No 1 (2004), Pagination: 114-115Abstract
No Abstract.Full Text
- River Response to Continuing Movements and the Scarp Development in Central Sahyadri and Ad Joining Coastal Belt
Abstract Views :191 |
PDF Views:135
Authors
Affiliations
1 Department of Marine Geology, Mangalore University, Mangalagangotri - 574 199, IN
2 Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bangalore -560 064, IN
3 National Geophysical Research Institute, Uppal Road, Hyderabad - 500 007, IN
1 Department of Marine Geology, Mangalore University, Mangalagangotri - 574 199, IN
2 Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bangalore -560 064, IN
3 National Geophysical Research Institute, Uppal Road, Hyderabad - 500 007, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 58, No 1 (2001), Pagination: 88-91Abstract
No Abstract.Full Text
- Identification of a Palaeodelta near the Mouth of Periyar River in Central Kerala
Abstract Views :161 |
PDF Views:167
Authors
Affiliations
1 Department of Marine Geology, Mangalore University, Mangalagangotri - 574 199, IN
1 Department of Marine Geology, Mangalore University, Mangalagangotri - 574 199, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 58, No 4 (2001), Pagination: 368-369Abstract
No Abstract.Full Text