Engineering Geology

Engineering Geology

The Introduce of Various Pseudokarst Features in Alvand Granitic Rocks, Hamedan, west of Iran

Author
Damghan University
Abstract
This research focuses on the identification and description of various features of pseudokarst in different parts of Alvand granitic batholith, Hamedan, west of Iran. In the literature, karst features have been presented as specific types of terrain or landscapes with particular characteristics suites of well-known surface and subsurface dissolutional forms. Whereas, pseudokarst refers to non-dissolutional surface or subsurface features and landforms created in different areas such as slopes, coastal lines crushed stone areas, lava tubes and permafrost regions. In this research, a comprehensive field investigation program has been carried out. During the field investigations, the most important features of pseudokarst in Alvand granitic batholith have been recognized and classified. Results show a wide range of pseudokarst features in the Alvand granitic rock masses. These landforms are created by erosion, weathering processes and some holes caused by rock block movements along the rock slopes. Some of the most important forms and features of the pseudokarst in the studied area are consist of tafoni, genama, pseudokarren, talus caves, caves associated with the residual blocks and erosional forms along joints and fractures within the granitic rock masses
Keywords

1. Arzi A.A., "Critical phenomena in the rheology of partially melted rocks", Tectonophysics 44 (1978) 173-184.## 2. Aurejac J.B., Gleizes G., Diot H., Bouchez J. L., "Le complexe granitique de Querigut (Pyrenees, France) re-examine par la technique de l’ASM: Un pluton syntectonique de la transpression dextre hercynienne", Bull. Soc. Geol. France 2 (2004) 157-174. ## 3. Chen A.Z., "Some problems of granite geomorphological landscapes", Geological Review, 53 (suppl.) (2007) 1-8. ## 4. Chen Y., Cui Z., Yang J., "Influence of climate and tectonic movements on granite landforms in China", J. Geogr. Sci. 19 (2009) 587-599. ## 5. GSI, (Geological Society of Iran), "Geological quadrangle map of Iran", No. D6, Scale 1:250000, Printed by Offset Press Inc., Tehran (1977). ## 6. Halliday W.R., "Pseudokarst in the 21st century" Journal of Cave and Karst Studies 69, No. 1 (2007) 103-113. ## 7. Huang Z.G., "Red Residuum in South China" Beijing: China Ocean Press (1996). ## 8. Kempe S., Halliday W.R., "Report on the discussion on pseudokarast", Proceedings of the 12th International Congress of Speleology, v. 6 Basel, Switzerland, Speleoprojects (1997). ## 9. Luo Z.H., Huang Z.M., Ke S., "An overview of granitoid" Geological Review, 53 (suppl.) (2007) 180-226. ## 10. Migon P., "Granite landscapes of the World", Oxford University Press Great Britain (2006). ## [1] 11. Olson R., "Karst Landscapes and the Importance of Three Dimensional Data in Protection of Cave and Karst Resources", U.S. Geological Survey Karst Interest Group Proceedings, Water-Resources Investigations Report 01-4011 (2001) 1-7. ## 12. Petford N., "Rheology of granitic magmas during ascent and emplacement", Annual Review Earth Planetary Science 31 (2003) 399-427. ## 13. Ritchot G., “Essais de Géomorphologie Structurale” Québec: Presses Universitaires Laval, (1975). ## 14. Roman, Berdiel M.T., "Mecanismes dintrusion des granites supracrustaux", Modeles analogiques et exemples naturels. Memoire. Geosciences Rennes. Rennes, France, 62 (1995) 1-258. ## [2] 15. Sepahi-Gero A.A., "Petrology of Alvand Plutonic with emphasis on granitoieds", PhD thesis on petrology, Tarbiat Moalem university, Tehran, Iran (1999). ## 16. Sepahi-Gero A.A., "Typology and petrogenesis of granitic rocks in the Sannandaj-Sirjan metamorphic belt, Iran: with emphasis on the Alvand plutonic complex", N. Jb. Geol. Palaont. Abh, 247 (3) (2008) 295-312. ## [3] 17. Technos Inc., "Characterizing Karst and Pseudokarst" Website. www.technos-inc.com, Volume 4, Issue 2 (2005) 1-12. ## 18. Thomas M.F., "Geomorphology in the Tropics: A study of Weathering and Denudation in Low Latitude", Chichester: John Wiley & Sons (1994). ## 19. Twidale C.R., "Granite Landforms", Amsterdam: Elsevier (1982). ## 20. Twidale C.R., "The two stage concept of landform and landscape development involving etching: origin, development and implications of an idea", Earth Science Reviews 57 (2002) 37-74. ## 21. Twidale C.R., Vidal Romani J.R., "Landforms and Geology of Granite terrains", Ed. Balkema, the Netherlands, Amsterdam (2005). ## 22. Twidale C.R., Vidal Romani J.R., "On the multistage development of etch forms",Geomorphology 11 (1994) 157-186. ## 23. Twidale C.R., "Granite Landforms", Elsevier Publishing Company, Amsterdam (1982). ## [4] 24. Urban J., "Pseudokarst caves as an evidence of sandstone forms evolution-a case study of Niekłań, the Świętokrzyskie Mts., central Poland", Ferrantia 44 (2005)181-185. ## [5] 25. Vaquiro Rodriguez M., "Karst in siliceous rocks:Pseudokarst landforms and caves in the quartz dyke of Pico Sacro (Boqueixon, Galicia)", Caderno Lab. Xeoloxico de Laxe Coruna. 29 (2004) 247-264. ## [6] 26. Vidal Romani J.R., Vaqueiro Rodriguez M., "Types of granite cavities and associated speleothems: genesis and evolution", Nature Conservation 63 (2007) 41-46. ## 27. Vidal Romani J.R., "El Cuaternario de la provincia de La Coruna. Modelos elasticos de formacion de cavidades", Servicio de Publicaciones. Universidad Complutense de Madrid. Serie Tesis Doctorales, Madrid (1985). ## 28. Vidal Romani J.R., Twidale C.R., "Sheet fractures, other stress forms and some engineering implications", Geomorphology 31(1-4) (1999) 13-27. ## 29. Wei H.R., Zhang Z.C, "Types of granite landscapes and discussions on their formation processes", Geological Review, 53(suppl.) (2007) 147-159. ## 30. Wray Robert A.L., "Quartzite dissolution: karst or pseudokarst?", Speleogenesis and Evolution of Karst Aquifers 2 (2003) 1-9. ## 31. Zeng Z.X., "Lithogeneous Topography", Beijing: Geological Publishing House (1960). ##