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Nature and onset age of neotectonic regime in the northern core of Isparta Angle, SW Turkey

Auteur(s) et Affiliation(s)

Active Tectonics and Earthquake Lab., Dept. of Geological Engineering, Middle East Technical Univ., Ankara, Turquie
GÜBOĞA, S.
Dept. of Geological Engineering, Akdeniz Univ., Antalya, Turquie
KALAFAT, D.
Kandilli Observatory and Earthquake Research Inst., Boğazici Univ., Istanbul, Turquie


Description :
The Isparta Angle (IA) is included in the southwest Anatolian tensional neotectonic domain and characterized by a series of grabens and horsts bounded by active normal faults of dissimilar length and trend. The evolutionary history of the graben-horst system is episodic. It is evidenced by 2 graben fills. These are older and modern (younger) graben fills separated by an intervening angular unconformity. The modern graben fill is nearly flat-lying (non-deformed) whereas older graben fill was deformed into a series of anticlines and synclines with ENE-trending curvi-linear axes by a short-term compressive tectonic regime operated in NNW–SSE direction during Late Pliocene. The diagnostic structures taking a part in the development of grabens and shaping the northern section of the IA are the margin-boundary normal faults. They occur in numerous single and several fault zones displaying a basin ward facing step-like land shape. Most of fault segments, particularly the master faults, are active and have a capacity of creating destructive earthquakes. This is evidenced by both the historical and instrumental period earthquakes.


Type de document :
Article de périodique

Source :
Geodinamica acta, issn : 0985-3111, 2012, vol. 25, n°. 1-2, p. 52-85, nombre de pages : 34, Références bibliographiques : 4 p.

Date :
2012

Editeur :
Pays édition : Royaume-Uni, Abingdon, Taylor and Francis

Langue :
Anglais
Droits :
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