THE CORINI ACTIVE FAULT IN SOUTHWESTERN VIOTIA REGION, CENTRAL GREECE: SEGMENTATION, STRESS ANALYSIS AND EXTENSIONAL STRAIN PATTERNS

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Published: Jun 8, 2007
DOI: https://doi.org/10.12681/bgsg.16561
Keywords:
Strain active faults fault slip stress Corini
A. Ganas
Institute of Geodynamics, National Observatory of Athens
V. Spina
Earth Sciences Dept, Univ. Camerino
N. Alexandropoulou
Institute of Geodynamics, National Observatory of Athens
A. Oikonomou
Institute of Geodynamics, National Observatory of Athens
G. Drakatos
Institute of Geodynamics, National Observatory of Athens
Abstract

The Corini normal fault is an active structure of Quaternary age in Southwestern Viotia. This is a region of low finite strain, located between the Quaternary rifts of the Gulf of Corinth and the Gulf of Evia. The fault is segmented into several segments with an average strike of N58°E and dip direction to the SE. The architecture of the fault zone is characterized by a 15 cm thick gouge rock, observed along the fault plane on the footwall side. At several localities along strike we observed a well-defined basal strip of un-eroded fault plane that represents the width (uplift) of the last co-seismic slip. The width of the strip ranges 20-30 cm. Slip inversion data show a mean orientation ofsigmaS (leastprincipal stress) as Ν328Έ which implies similar kinematics with the active faults of the south coast of the Gulf of Corinth.

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  • Tectonic- Dynamic- Applied Geology
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References
Ambraseys, N.N., and Jackson, J.A., 1990. Seismicity and associated strain of central Greece between 1890 and 1988, Geophysical Journal International, 101(3), 663-708.
Briole, P., Rigo, Α., Lyon-Caen, H., et al., 2000. Active deformation of the Corinth rift, Greece: Results from repeated Global Positioning System surveys between 1990 and 1995, Journal of Geophysical Research, 105(B11), 25605-25625.
Clarke, P.J., Davies, R.R., England, P.C., et al., 1998. Crustal strain in central Greece from repeated GPS measurements in the interval 1989-1997, Geophysical Journal International, 135(1), 195-214.
Crone, Α., and Haller, KM., 1991. Segmentation and the coseismic behavior of Basin and Range normal faults; examples from east-central Idaho and southwestern Montana, U.S.A., Journal of Structural Geology, 13, 151-164.
Ganas, Α., Roberts, G.P., and Memou, Tz., 1998. Segment boundaries, the 1894 ruptures and strain patterns along the Atalanti Fault, Central Greece, Journal of Geodynamics, 26, 2-4, 461 -486.
Ganas, A, and Papoulia, I., 2000. High-resolution, digital mapping of the seismic hazard within the Gulf of Evia Rift, Central Greece using normal fault segments as line sources, Natural Hazards, 22 (3), 203-223.
Ganas, Α., Pavlides, S.B., Sboras, S., Valkaniotis, S., Papaioannou, S., Alexandris, A.G., Plessa, Α., and Papadopoulos, G.A., 2004. Active fault geometry and kinematics in Parnitha Mountain, Attica. Greece, J. Structural Geology, 26, 2103-2118.
Goldsworthy, M, and Jackson, J., 2001. Migration of activity within normal fault systems: examples from the Quaternary of mainland Greece, Journal of Structural Geology, 23 (2-3), 489-506.
Hancock, P.L., and Barka, A.A., 1987. Kinematic indicators on active normal faults in western Turkey, Journal of Structural Geology, 9, 573-584.
Jackson, J.A., Gagnepain, J., et al., 1982, Seismicity, normal faulting and the geomorphological development of the Gulf of Corinth (Greece): the Corinth earthquakes of February and March 1981, Earth & Planet. Sc. Let., 57, 377- 397.
King, GCP, Ouyang, Z.X., Papadimitriou, P., et al., 1985. The evolution of the Gulf of Corinth (Greece) - an aftershock study of the 1981 earthquakes, Geophysical J. Royal S., 80 (3), 677.
Lemeille, F., 1977. Etudes rnicrotectoniques en Grèce Centrale Nord-Orientale (Eubèe Centrale, Attique, Bèotie, Locride), Thèse Seme cycle, Univ. Paris XI, 173pp.
Morewood, N.C., and Roberts, G.P., 2001. Comparison of surface slip and focal mechanism slip data along normal faults: an example from the eastern Gulf of Corinth, Greece, Journal of Structural Geology, 23 (2-3), 473-487.
Roberts, GP, 1996. Non-characteristic normal faulting surface ruptures from the Gulf of Corinth, Greece, Journal ofGeophysical Research, 101 (Bll), 25255-25267.
Roberts, G.P., and Ganas, Α., 2000. Fault-slip directions in central and southern Greece measured from striated and corrugated fault planes: Comparison with focal mechanism and geodetic data, Journal of Geophysical Research, 105 (BIO), 23443-23462.
Roberts, G.P., and Michetti, A.M., 2004. Spatial and temporal variations in growth rates along active normal fault Systems: an example from Lazio-Abruzzo, central Italy, Journal of Structural Geology, 26, 339-376.
Salvini, F., 2000. Structural Data Integrated System Analyzer software (DAISY 2.19), Dipartimento di Scienze Geologiche, Universita degli Studi di "Roma Tre", Rome, Italy.
Salvini, F., Billi, Α., and Wise, D.U., 1999. Strike-slip fault propagation cleavage in carbonate rocks: the Mattinata Fault Zone, Southern Apennines, Italy, Journal of Structural Geology, 21, 1731-1749.
Stewart, LS., and Hancock, P.L., 1988. Normal fault zone evolution and fault scarp degradation in the Aegean region, Basin Research, 1, 139-153.
Stewart, I.S., and Hancock, P.L., 1990. Brecciation and fracturing within neotectonic normal fault zones in the Aegean region. In R.J. Knipe and E.H. Rutter (eds), Deformation Mechanisms, Rheology and Tectonics, Geological Society Special Publication 54, 105-110pp.
Stewart, I.S., and Hancock, P.L., 1991. Scales of structural heterogeneity within neotectonic normal fault zones in the Aegean region. In P.L. Hancock, R.S. Yeats and D.J. Sanderson (eds), Characteristics of Active Faults, Journal of Structural Geology, 13, 191-204pp.
Taymaz, T, Jackson, JA., and McKenzie, D.P., 1991. Active tectonics of the north and central Aegean Sea, Geophysical Journal International, 106, 433-490.
Wells, D.L., and Coppersmith, K.J., 1994. New empirical relationships among magnitude, rupture length, rupture width, rupture are, and surface displacement, Bull. Seismol. Soc. Am., 84, 974-1002.
Wise, D.U., Funiciello, R., Parotto, M., and Salvini, F., 1985, Topographic lineament swarms: Clues to their origin from domain analysis of Italy, Geological Society of America Bulletin, 96, 952-967.
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