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Bhandari, S.
- Alluvial Fan Sedimentation in Heran and Kara River Valleys of Lower Narmada Basin, Western India
Abstract Views :188 |
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Authors
Affiliations
1 Department of Geology, M.S.University of Baroda, Vadodara - 390 002, IN
1 Department of Geology, M.S.University of Baroda, Vadodara - 390 002, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 65, No 4 (2005), Pagination: 451-458Abstract
Sedimentation in an alluvial fan environment in Heran and Kara river valley of lower Narmada basin has been recognized. The fans are incised by Heran and Kara rivers due to vertical movements along faults. The architecture of the fans is built by various lithofacies (Gc, Gms, Gh, Gp, Gm, Sh, Sp and Gsh) with maximum clast size ranging from cobbles to large isolated boulders, mainly of basalts. The variations in the lithofacies are considered to be largely controlled by the then prevailing climates. Tectonics created the accommodation space within which fan aggradation took place and shaped their present morphology. The fan aggradation in Heran and Kara rivers appear to have taken place during Late Pleistocene and Early Holocene, respectively. An overall humid climate together with tectonic activity is inferred for the formation of alluvial fans in Heran and Kara rivers.Keywords
Alluvial fan, Tectonics, Geomorphology, Late Quaternary, Lower Narmada basin.- Environmental Changes during Late Pleistocene in the Orsang River Basin, Western India
Abstract Views :233 |
PDF Views:2
Authors
Affiliations
1 Physical Research Laboratory, Navrangpura, Ahmedabad - 380 009, IN
2 Department of Geology, M S University of Baroda, Vadodara - 390 002, IN
1 Physical Research Laboratory, Navrangpura, Ahmedabad - 380 009, IN
2 Department of Geology, M S University of Baroda, Vadodara - 390 002, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 64, No Spl Iss 4 (2004), Pagination: 471-479Abstract
Chronometric and sedimentological data generated from the exposed Quaternary sequences of the Orsang River basin indicate close correspondence between the environmental changes and fluvial aggradation. The oldest and regionally extensive fine Silty-Clay occurring at the base of the successions is dated to >97 ka suggesting prevalence of high sinuosity suspended load fluvial regime. Its stratigraphics portion suggests that the deposition occurred during the enhanced southwest monsoon corresponding to the Marine isotopic Stage-5 (MIS-5). The gravel deposits that overlie provide an age of -60 ka indicating dominance of braided system (MIS-4) during the reduced southwest monsoon. The pluvial interstadial (MIS-3) is represented by flood plain facies that was deposited under the persistent fluvial system strengthened by enhanced southwest monsoon and assigned ages ranging between 50 and 30 ka. An extensive aeolian sand sheet that blankets the topography, is luminescence dated to 21 ka suggesting the onset of Last Glacial Maximum in the Orsang River basin.Keywords
Late Pleistocene, Fluvial Aggradation, Environmental Change, Orsang River Basin, Western India.- Bresast Feeding Versus Top Feeding : Impact on Growth, Morbidity and Mortality in Neonatal Period
Abstract Views :204 |
PDF Views:1
Authors
Affiliations
1 Depariment of Pediatrics, R. N. T. Medical College, Udaipur, Rajasthan, IN
1 Depariment of Pediatrics, R. N. T. Medical College, Udaipur, Rajasthan, IN