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Pradeepkumar, A. P.
- Declining Interest in Geology
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1 Focal Image (India) Put. Ltd., St. Joseph's Press Building, Trivandrum 695 014, IN
1 Focal Image (India) Put. Ltd., St. Joseph's Press Building, Trivandrum 695 014, IN
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Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 56, No 3 (2000), Pagination: 341-341Abstract
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- Prof. R. Krishnanath (1938-2007)
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Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 70, No 4 (2007), Pagination: 693-693Abstract
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- Weathering and Landslide Occurrences in Parts of Western Ghats, Kerala
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1 Geological Survey of India, Kerala Unit Manikanteswaram P O, Trivandrum - 695 013, IN
2 Department of Geology, Periyar University, Salem - 636 011, IN
3 Department of Geology, University College, Trivandrum - 695 034, IN
4 Central Groundwater Board, Trivandrum - 695 004, IN
1 Geological Survey of India, Kerala Unit Manikanteswaram P O, Trivandrum - 695 013, IN
2 Department of Geology, Periyar University, Salem - 636 011, IN
3 Department of Geology, University College, Trivandrum - 695 034, IN
4 Central Groundwater Board, Trivandrum - 695 004, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 78, No 3 (2011), Pagination: 249-257Abstract
The climatic condition of Western Ghats has influenced the process of weathering and landslides in this mountainous tract along the southwest coast of India. During the monsoon period, landslides are a common in the Western Ghats, and its intensity depends upon the thickness of the loose unconsolidated soil formed by the process of weathering. Debris landslides with a combination of saprock, saprolite and soil, indicate the role of weathering in landslide occurrences. This paper reports on how the weathering in the windward slope of Western Ghats influences the occurrence of landslides and the factors which accelerate the weathering process. Rock and soil samples were collected from the weathering profile of hornblende gniess and granite gneiss. The chemical analysis and the calculated Chemical Index of Alteration (CIA) indicate the significant weathering and its possible influence on landslide occurrences in the study area. Mainly, the CIA value of lateritic soil and forest loam indicated the extent of high chemical weathering in this region. Rainfall is the dominant parameter influencing the chemical weathering process. In addition, deforestation, land use practices and soil erosion are some of the other important factors accelerating the weathering process and landslide occurrences in the region. The locations of the previous landslides superimposed on geology and soil show that most of the landslide occurrences are associated with the highly weathered zone, particularly lateritic soil and the 'severe' (rock outcrop) erodability zone.Keywords
Weathering, Landslides, CIA, Western Ghats, Kerala.
References
- ANBAZHAGAN, S., SAJINKUMAR, S.K. and SINGH, T.N. (2011) Remote sensing and geotechnical Studies for slope failure assessment in part of Ernakulam and Idukki District, Kerala, India. In: T.N. Singh and Y.C. Sharma (Eds.), Slope Stability (Natural and Man Made Slope). Vayu Education of India, New Delhi, pp.255-281.
- BUMA, J. and DEHN, M. (1998) A method for predicting the impact of climate change on slope stability. Environ. Geol., v.35(2-3), pp.190-196.
- DEEPTHY, R. and BALAKRISHNAN, S. (2005) Climatic control on clay mineral formation: Evidence from weathering profiles developed on either side of the Western Ghats. Jour. Earth System Sci., v.114, pp.545-556.
- DEROSE, R.C., TRUSTRUM, N.A. and BLASCHKE, P.M. (2006) Post-deforestation soil loss from steepland hillslopes in Taranaki, New Zealand. Earth Surface Process and Landform, v.11(2), pp 131-144.
- DOKUZ, A. and TANYOLU, E. (2004) Geochemical Constraints on the Provenance, Mineral Sorting and Subaerial Weathering of Lower Jurassic and Upper Cretaceous Clastic Rocks of the Eastern Pontides, Yusufeli (Artvin), NE Turkey. Turkish Jour. Earth Sci., v.15, pp.181-209.
- FLUENTE, J.D.L., ELDER, D. and MILLER, A. (2002) Does deforestation influence the activity of deep-seated landslides? Observations from the flood of 1997 in the Central Klamath Mountains, Northern California. The evolving PacificNorthwest Landscape: Geomorphic and Ecologic controls, constrains, and conundrums in the Quaternary. May 13-15, 98th Annual meeting Abstracts.
- JENNY, H. (1941) Factors in soil formation. McGraw Hill, New York, 271p.
- JHA, C.S., DUTT, C.B.S. and BAWA, K.S. (2000) Deforestation and land use changes in Western Ghats, India. Curr. Sci., v.79(2), pp.231-237.
- KOSHIMOTO, S., TSUNOGAE, T. and SANTOSH, M. (2004) Sapphire and Corundum bearing ultra-high temperature rock from the Palghat-Cauvery shear system, Southern India. Jour. Mineral. Petrol. Sci., v.99, pp.298-310.
- LINDSAY, P., CAMPBELL, R.N., FERGUSSON, D.A., GILLARD, G.R. and MOORE, T.A. (2001) Slope stability probability classification, Waikato Coal Measures, New Zealand. Internat. Jour. Coal Geol., v. 45, nos.2-3, pp.127-145.
- NESBITT and YOUNG (1984) Prediction of some weathering trends of plutonic and volcanic rocks based on thermodynamic and kinetic consideration. Goechim. Cosmochim. Acta, v.54, pp.1523-1534.
- OLDHAM, R.D. (1894) The evolution of Indian Geography. The Geographical Jour., v.III(3), pp.169-179.
- PASCOE, E.H. (2001) Physical Geography of the Western Ghats. In: Y. Gunnell and B.P. Radhakrishna, (Eds.), Sahyadri: The great escarpment of the Indian subcontinent. Mem. Geol. Soc. India, no.47(1), pp.67-69.
- PASUTO, A. and SILVANO, S. (1998) Rainfall as a trigger of shallow mass movements. A case study in the dolomites, Italy. Environ. Geol., v.35(2-3), pp.184-189.
- PRICE, J.R. and VELBEL, M.A. (2003) Chemical weathering indices applied to weathering profiles developed on heterogeneous felsic metamorphic parent rocks. Chemical Geol., v. 202, pp.397-416.
- RAJAN, P.K., SANTOSH, M. and RAMACHANDRAN, K.K. (1984) Geochemistry and petrogenetic evolution of the diatexites of Central Kerala, India. Proc. Indian Acad. Sci. (Earth Planet. Sci.), v.93(1), pp.57-69.
- RANGER, J. (2002) Le cycle biogeochimique des elements nutritifs dans les ecosystems forest. INRA, Nancy, 168p.
- RASTOGI, B.K., CHANDA, R.K., KUMAR, N., SATYMURTHY, C., SARMA, C.S.P. and RAJU, I.P. (1989) Report on the Idukki earthquake of magnitude 4.5 on June 7 1988 as an example of reactivation of a NW-SE wrench fault in Peninsular India. NGRI Tech. report. No. ENVIRON 61,78.
- SAJINKUMAR, K.S. (2005) Geoinformatics in landslide risk assessment and management in parts of Western Ghats, Central Kerala, South India. PhD Thesis (Unpublished). Indian Institute of Technology Bombay, 197p.
- SANTOSH, M., IYER, S.S. and VASCONCELLOS, M.B.A. (1987) Rare earth element geochemistry of the Munnar carbonatite, Central Kerala. Jour. Geol. Soc. India, v.29, pp.335-343.
- SMYTH, C.G. and ROYLE, S.A. (2000) Urban landslide hazards: incidence and causative factors in Niteroi, Rio de Janerio State, Brazil. Applied Geography, v.20, pp.95-117.
- SOREGHAN, M.J., SOREGHAN, G.S. and HAMILTON, M.J. (2002) Geochemistry and Detrital Zircon Geochronology of Upper Paleozoic Loessite within the Ancestral Rocky Mountains: Implications for Paleoclimate. AAPG Hedberg Conference "Late Paleozoic Tectonics and Hydrocarbon Systems of Western North America, The Greater Ancestral Rocky Mountains" July 21-26 Colorado.
- SUBRAMANYA, K.R. (2001) Origin and evolution of the Western Ghats and the west coast of India. In: Y. Gunnell and B.P. Radhakrishna (Eds.), Sahyadri: The great escarpment of the Indian subcontinent. Mem. Geol. Soc. India, no.47(1), pp.463-473.
- TERLIEN, M.T.J. (1998) The determination of statistical and deterministic hydrological landslide-triggering thresholds. Environ. Geol., v.35(2-3), pp.124-130.
- TREFTHEN, J.M. (1950) Classification of sediments. Amer. Jour. Sci., v.248, pp.55-62.
- VAN ASCH, TH.W.J., DE BRUM FERREIRA, A. and RODRIGUES, M.L. (1999) The role of conditioning and triggering factors in the occurrence of landslides: A case study in the area north of Lisbon (Portugal). Geomorphology, v30, pp.133-146.
- WILSON, R.C. and WIECZOREK, G.F. (1995) Rainfall thresholds for the initiation of debris flows at La Honda, California. Environ. Engg. Geoscience, v.1, pp.11-27.
- ZHOU, C.H., LEE, C.F., LI, J. and XU, Z.W. (2002) On the spatial relationship between landslides and causative factors on Latau Island, Hong Kong. Geomorphology, v.43, pp.197-207.