Brittle tectonic and morphological alteration of Almyros basin

PDF
Published: Jan 1, 2001
DOI: https://doi.org/10.12681/bgsg.17038
Keywords:
Geomorphology morphotectonics neotectonics fault stress field
Δ. ΓΑΛΑΝΑΚΗΣ
Institute of Geology and Mineral Exploration
Abstract

Two crossed fault systems with NW-SE and E-W directions affect on the central and southern part of the Almyros basin. The uplift movement in the western part of the basin, with importance vertical displacement (up to 200m) of the lignite layers and the formation river terraces are related with the activity of the first fault NWSE direction. The second fault with E-W direction, located along Xerias river, affect on drainage system with hydrographie network from the south to the north development. In the southern part of the basin and on the Orthrys mountain a fault system with E-W trending affects on alpine basement and neogene deposits. This fault system forms the southern boundary of the Almyros basin. The recent brittle tectonic during Neogene-Quaternary is connected with the evolution and the configuration of the Almyros basin as well as volcanic activity of the area. The morphological differentiations of Almyros basin, the drainage system and the recent landforms with morphogenic activity are controlled by the recent brittle tectonics. The normal fault systems in the studied area caused by the extensional stress field (σ3), trending N-S to NNW-SSE, which controls the geodynamic regime since Lower Pleistocene. This geodynamic regime has defined the recent morphological and morphotectonic evolution of the studied area.

Article Details
  • Section
  • Neotectonics and Geomorphology
Creative Commons License

This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

Authors who publish with this journal agree to the following terms:

Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution Non-Commercial License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.

Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g. post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal. Authors are permitted and encouraged to post their work online (preferably in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work.

Downloads
Download data is not yet available.
References
CAPUTO R., (1990): Geological and structural study of the recent and active brittle deformation of the Neogene-Quaternary basins of Thessaly (Central Greece). Ph.D. Thesis. Ar. Univ. Thessaloniki, V12, 252p.
CAPUTO R., (1996): The active Nea Anchialos fault system (Central Greece): comparison of geological, morphotectonic, archaeological and seismological data. Ann. Geof. Vol. XXXIX, N.3.
CAPUTO,R., & PAVLIDES, S. (1993). Late Cainopzoic geodynamic of Thessaly and surroundings (centralnorthern Greece.). Tectonophysics, 223, p. 339-362.
DOORNKAMP C. J. (1986): Geomorphological appproaches to the study of neotectonics. /. Geol. Soc, Lond Vol. 143, 335-342.
DOUTSOS, TH., (1979). Zur Plio-Pleistozanen tektonik ost-Thessaliens. AG.P.H., THS 1: 333-343.
FYTIKAS M., INNOCENTI F., MANETTI P., MAZZUOLIA-PECCERILLO Α., VILLARIL., (1985): Tertiary to Quaternary evolution of volcanism in the Aegean region. The Geol.Evolution of the E. Medit. Special Pubi, of the Geol. Soc. No 17, 687-699.
GALANAKIS D., (1997): Neotectonic structure and stratigraphy Neogene and Quaternary sediments of Almyros- Pagasitikos basin, Pilio, Oreoi-Trikeri chanel and Maliakos gulf. Ph.D.Thesis.Aristot. Univer.Thessaloniki, Unpub., (in Greek), 260p.
GALANAKIS D., PAVLIDES S., MOUNTRAKIS D., (1998): Recent Brittle Tectonic in Almyros -Pagasitikos, Maliakos, N. Euboia & Pilio. Bull. Geol. Society of Greece, XXXIII1, 263-273.
GALANAKIS D., KOUTSOUVELI AN., (2000): Neogene and Quaternary sediments of Almyros basin (Thessaly, Greece). A stratigraphie approach. Proceedings Inter. Colloquium RCMNS, Patras 1998. Geol. Society of Greece, Sp. Pubi. p.p71-77.
MAROUKIAN H., ZAMANI Α., (1983): Morphotectonic observations in the drainage basin of the Sperhios River, Central Greece. Proceedings, Symposium of the Morphotectonics working Group (I.G.U.), Sofia, 1981, 191-203.
MAPOYKIAN Σ., X. (1987): Φυσικογεωγραφικές παρατηρήσεις στη λεκάνη απορροής του ποταμού Σπερχειού. Διδακτορική διατριβή, Πανεπιστήμιο Αθηνών.
MOUNTRAKIS D., KILIAS Α., PAVLIDES S., ZOUROS Ν., SPYROPOULOS Ν., TRANOS M., SOULAKELLIS Ν., (1993): Field study of the Southern Thessaly highly active fault zone. Proceedings 2nd Cong, of the Hellenic, Geophysical Union, Fiorina, 5-7 May 1993 Greece, p.p 603-614.
PERISSORATIS K, AGELOPOULOS I., MITROPOULOS D., MICHAILIDIS S., (1991): Surficial Sediment Map of the Aegean Sea Floor, "Pagassitikos" sheet. I.G.M.E. Athens.
PAPAZACHOS, B.C., PANAGIOTOPOULOS, R.G., TSAPANOST.M., MOUNTRAKIS, D., DIMOPOULOS, G.CH. (1983): A study of the 1980 summer seismic sequence in the Magnesia region of central Greece. Geophys. J. Reach. Soc (1983) 75, 155-168.
ΣΤΕΙΡΟΣ Σ., ΠΑΠΑΓΕΩΡΓΙΟΥ Σ., (1989): Ανω Ολοκαινικές μεταβολές της στάθμης της θάλασσας και μερικά συμπεράσματα για την ενεργό τεκτονική της κεντρικής Ελλάδας. Δ.Ε.Γ.Ε. τομ. ΧΧΙΙΙ/1, 259-269.
STRAHLER Α., (1964): Quantitive geomorphology of drainage basins and channel networks, in: Chow, V. (ed.). Handbook of applied hydrology. Section 4-II: 39-76, McGraw-Hill Book Co., New York.
ΨΙΛΟΒΙΚΟΣ Α., ΚΑΝΕΤΣΗ E., (1989): Εξάπλωση και παλαιογεωγραφική σημασία των επιφανειών επιπέ- δωσης στους ορεινούς όγκους της Πελαγονικής μάζας. Δελτίο Ε.Γ.Ε. τομ. ΧΧΙΙΙ/1, 279-287.
Most read articles by the same author(s)