Polyphase tectonic evolution of the Aksu Basin, Isparta Angle (Southern Turkey)

Abstract

Abstract:The Aksu Basin, within the Isparta Angle, is located to the north of the intersection of the Aegean and Cyprus arcs and has been evolving since the Middle Miocene. Correlation of: (1) kinematic analysis of fault planes that cut the basin fill, (2) the reactivation/inversion of fault planes and (3) sedimentological data indicate that the Aksu Basin has evolved by four alternating compressional and extensional tectonic phases since its formation. The first phase was NW-SE oriented compression caused by the emplacement of the Lycian Nappe units which ended in Langhian. This compressional phase that induced the formation and the initial deformation of the basin was followed by a NW-SE extensional phase. This tectonic phase prevailed between the Langhian and Messinian and was terminated by a NE-SW compressional regime known as the Aksu Phase. The neotectonic period is characterized by NE-SW extension and began in the Late Pliocene. Correlation with the existing tectonic literature shows that the order of deformational phases proposed in this study might also be valid for the entire Isparta Angle area.

Reconstructing the sedimentary evolution of the Miocene Aksu Basin based on fan delta development (eastern Mediterranean-Turkey)

“…Bedding plane measurements were taken from basin fill to control the tectonic and sedimentological interpretation and two sedimentary logs were taken from FDs to define sedimentary facies and analyze the sedimentary environment changes. Fifteen facies are partially adopted from previous studies (e.g., Karabıyıkoğlu et al, 2004;Çiner et al, 2008;Üner, 2009) and used to Koçyiğit and Özacar, 2003;Zitter et al, 2003;Özsayın, 2007;Üner et al, 2015) Akay and Uysal, 1984;Şenel, 1997;Glover and Robertson, 1998a;Karabıyıkoğlu et al, 2004;Monod et al, 2006;Üner, 2009;Poisson et al, 2011). b) Location of the FDs in Aksu Basin.…”

“…The Aksu Basin, the subject of this study, experienced multistage tectonism (Flecker et al, 1998;Glover and Robertson, 1998b;Poisson et al, 2011;Üner et al, 2015;Koç et al, 2016) and that activity led to the formation of alluvial fan/FD bodies at the basin. An alluvial fan (Eskiköy) and five FD sequences (Kapıkaya, Kozan, Karadağ, Kargı, and Bucak FDs) play a major role in the sedimentary evolution of the basin.…”

“…Figure 1. a) Major neotectonic features of Turkey and adjacent areas (compiled fromKoçyiğit and Özacar, 2003;Zitter et al, 2003;Özsayın, 2007;Üner et al, 2015) (white arrows indicate the motion of the plates). b) Location and boundaries of Aksu, Köprüçay, and Manavgat basins in the Isparta Angle.…”

Paleobathymetric evolution of the Miocene deposits of the Gömbe sector of the Lycian Foreland and Aksu basins in Antalya, Turkey

“…The evolution of the basins is closely linked with the Africa-Eurasia convergence and Kaymakcı et al, 2018). collision of intervening continental blocks (Flecker et al, 2005;Çiner et al, 2008;Üner et al, 2015;Koç et al, 2016). Therefore, the information obtained from these basins will provide constraints on the evolution of the eastern Mediterranean basins over the last ~15 my.…”

Refraction microtremor (ReMi™)–based investigation of the accumulation of Quaternary sediments on the northern edge of Isparta, Turkey

“…(c) Regional geological map of Isparta, 1/500,000 in scale (modified from Pamir and Erentöz 1968). (d) Simplified geological map of the study and nearby areas et al 2003a, b;Robertson et al 2003;Koçyiğit et al 2012;Üner et al 2015).…”