Scientific Quarterly Journal of Geosciences

Scientific Quarterly Journal of Geosciences

The Role of Neotectonics on Fluvial Systems in the Quaternary Case Study: Rivers of Northern Slope of Misho-Dagh Mountains, Northwest Iran

Document Type : Original Research Paper

Author
Davoud Mokhtari
Department of Geographical Researches, University of Tabriz. Iran
Abstract
         Misho-Dagh Mountain range is part of Azerbaijan plateau in Northwest Iran. This E-W range is located between Marand and Shabestar plains. Northern Misho fault, the main fault in study area, and other parallel faults have separated the topographic units and geological structures. Rivers on the northern slope of Misho- Dagh, flowing from the south to the north, cut across geological structures and topographical units in their distal reaches, prior to joining in the Marand plain.
The long-term drainage evolution and its creation, as transverse fluvial systems, have been examined by reconstruction of drainage network using a combination of geological and geomorphological records. This reconstruction is based on analysis of topographic and geologic maps and area photos and repeated field studies on fluvial remnants. Results show that drainage evolution in the study area has occurred in three stages: a) sedimentation of the Plio-Pleistocene non-compacted conglomerates (relict alluvial fans), b) uplift of the Plio- Pleistocene sediments in mid-? Late Pleistocene, separation of this sediments from main mountainous body of Misho-Dagh due to a E-W synclinal valley, formation of new block of mountains (anticline) in the north of the valley and eastward diversion of rivers in their distal reaches, and c) faulting of new relief block by S-N faults crossing the relief axis, verification of rivers to fault lines and formation of new alluvial fans.
Neotectonic indices such as inclination of the Plio- Pleistocene sediments, separation of this sediments from main mountainous body of Misho-Dagh, verification and non-verification of rivers by tectonic and geologic structures, catchment morphometric properties, and situation and morphology of alluvial fans indicate that fluvial systems in the study area are influenced by the Pleistocene and Holocene tectonic activities, and tectonics is the main factor in the fluvial system replacement  and their situation.
Keywords
Neotectonics
Fluvial systems
Quaternary drainage network evolution
Northern slope of Misho-Dagh
Northwest of Iran

Subjects

Bull, W.B. and McFadden,L.,1977- Tectonic geomorphology north and south of the Garlock fault, California. In: Dohring , D.O.(ed.),Geomorphology in arid regions.Publ. In geomorphology,State University of New York,Binghamton,pp.115-138.
Bull, W.B., 1972- Recognition of alluvial fan deposits in the stratigraphic record. In: Rigby, J.K., and Hamblin, W.K. (eds.). Recognition of Ancient Sedimentary Environments: EPM Special Publication 16, p. 63-83.
Garcia,A.F., Zhu,Z., KuT.L., Sanz de Galdeano,C., Chadwick,O.A.,Chacon Montero, J., 2003- Tectonically driven landscape development within the eastern Alpujarran Corridor, Betic Cordillera, SE Spain (Almeria): Geomorphology 50. p. 83-110.
Garcia-Melendez, E., Goy, J. L., Zazo, C., 2003- Neotectonics and plio-Quaternary landscape development within the eastern Huercal-Overa Basin ( Betic Cordilleras, southeast Spain): Geomorphology 50. p. 111- 133.
Guccione,M.J., Mueller,K., Champion,J., Shepherd, S., Carlson,S.D., Odhiambo,B., Tate,A,. 2001- Stream response to repeated coseismic folding, Tiptonville dome, New Madrid seismic zone. Geomorphology ,43,p. 313-349
Harvey , A. M.,Wells,S.G.,1987- Response of Quaternary Fluvial systeme to differential epiorogenic uplift: Aguas and Feos river systems, southern Spain. Geology 15, p.689-693.
Harvey, A.M., 1989- The occurrence and the role of arid zone alluvial fans. In: Thomas, D.S.G. (ed.). Arid Zone Geomorphology: New York, Wiley, p. 136-158.
Harvey, A.M., 1996- The role of alluvial fans in the mountain fluvial Systems of southeast Spain: Implications of Climatic Change: Earth Surface Processes and Land forms, Vol. 21. p. 543-553.
Harvey, A. M., Foster, G., Hannam, J., Mather, A. E., 2003- The Tabernas alluvial fan and lake system, southeast Spain: applications of mineral magnetic and pedogenic iron oxide analyses towards clarifying the Quaternary sediment sequences: Geomorphology 50. p. 151-171. Geomorphology 50. p. 203-225.
Keller,1986- Investigation of active tectonics: use of surficial processes. In:Wallace, R.E. (ed.), Active tectonics.Washington, DC National Academy Press, pp. 136-147.
Keller, E.A., Pinter, N.,1996- Active tectonics: Earthquakes, Uplift, and Landscape. Prentice Hall, Pup.
Lecce, S.A., 1990- The alluvial fan problem. In:A.H. Rachocki and M.Church (eds.). Alluvial fans: A field approach. John Wiley & Sons. p. 3-24.
Li, y., yang, J., Tan, L., Duan, F.,  1999- Impact of tectonics on alluvial landforms in the Hexi Corridor, Northwest China: Geomorphology 28. p. 299-308.
Ramirez- Herrera, M.T., 1998- Geomorphic assessment of active tectonics in the Acambay graben, Mexican Volcanic belt. Earth surface processes and landforms. Vol. 23, 317-322.
Schoorl, J. M., Veldkamp, A., 2003- Late Cenozoic landscape development and its tectonic implications for the Guadalhorce valley near Alora (Southern Spain):  Geomorphology 50. p. 43-57.
Schumm,S.A.,1977- The fluvial system.Wiley, New York, 338 pp. 
Schumm,S.A.,1986- Alluvial river response to active tectonics. In: Active  tectonics: Studies in Geophysics. National Academy Press, Washington DC.
Silva,P.G., Goy, J. l., Zazo,C., Bardaji, T.,2003- Fault-generated mountain fronts in southeast Spain: geomorphologic assessment of tectonic and seismic activity.
Snyder,N.P.,Whipple,K.X.,Tucker,G.E.,Merrits,D.J.,2003- Channel response to tectonic forcing:field analysis of stream morphology and hydrology in the Mendecino triple junction region, northern California: Geomorphology 53. p.97-127.
Sorriso - Valvo, M., L. Antonico., E. Le pera., 1998- Controls on modern fan morphology in Calabria, Southern Italy: Geomorphology, 24. p.169-187.
Stevens,G.R.,1974- Rugged landscape, The geology of Central New Zealand. A.h. and A.W. Reed, Wellington, 286 pp.  
Stokes, M., Mather, A. E.,2003- Tectonic origin and evolution of transverse drainage: the Rio Almanzora, Betic Cordillera, Southeast Spain: Geomorphology 50. p. 59-81.
Viseras, C., Calvache, M. L., Soria, J. M., Fernandez, J., 2003- Differential features of alluvial fans controlled by tectonic or eustatic accommodation space. Examples from the Betic Cordillera, Spain: Geomorphology 50. p. 181-202.
Wallace, R.E., 1967- Note on stream channel offset by the San Andreas Fault ,southern Coast Range, California. Stanford Univ. Publ. (Geol. Sci.) 11.p.6-20.
Scientific Quarterly Journal of Geosciences
Volume 15, Issue 57
Autumn 2006, Vol. 15, No. 57
Autumn 2006
Pages 64-77