New insights on the tectonic setting and evolution around the apex of the Isparta Angle (SW Turkey)

Abstract

Recently acquired data lead to a revision of the structure around the apex of the Isparta Angle (area around Isparta). In the autochthonous/parautochthonous carbonate platform several blocks are identified as having followed distinctive palaeogeographical evolutions during Mesozoic times. These blocks are: the Kır Dağları, the Barla Dağ, the Söbü Dağ and the Bey Dağları. However, the latter two blocks cannot be considered as identical as previously believed. A major thrust fault may separate these blocks, which may be substantially allochthonous with respect to the relatively autochthonous Bey Dağları. Within the allochthon, in the Isparta Çay area, studied here, Mesozoic deep‐marine sequences are thrust duplicated many times. The tectonic history of the area is polyphased, the main events being in the Late Cretaceous (initiation of shortening), pre‐Miocene (Antalya Nappe emplacement), and Late Miocene/Pliocene (Aksu thrusting). The Aksu phase reactivates older thrusts and has given rise to the most prominent relief of the area (the Davras Dağ, 2600 m). Palaeogeographic reconstructions are proposed to take account of all the above data. Copyright © 2003 John Wiley & Sons, Ltd.

The role of oroclinal bending in the structural evolution of the Central Anatolian Plateau: evidence of a regional changeover from shortening to extension

“…This rotation in the eastern limb of the orocline has been followed by NE-SW extension during the Late Pliocene and Quaternary (Koçyigit & Özacar 2003;Poisson et al 2003b), which is manifested the active tectonic regime in the Tuzgölü Basin. This phase of extension can also be verified for the western part of the neighbouring Konya Basin, which is located to the east of the IA (Eren 2003a,b) (Fig.…”

The tectonic evolution of Lake Eğirdir, West Turkey

“…In the eastern part of the Isparta Angle between Isparta and Serik, the Aksu Fault -which is 50 km long -has been recognized as a reverse fault system (Poisson et al, 2003). All along the length of this fault system, the Mesozoic limestone/shale units of the western Taurides have been thrusted onto younger Miocene rocks.…”

“…It is the first strikeslip fault recognized in the western part of the Taurides. It operated as a strike-slip fault in the Miocene; later, compression occurred along the same direction Boray et al,1985;Poisson et al, 2003). According to , the position of the tectonic features in the field indicates that this fault was a dextral strike-slip fault during the Miocene, but acted as a thrust afterwards.…”

“…More research has been carried out on a wide range of geological topics concerning Lake Egirdir and its surroundings (Poisson, 1984;Boray et al, 1985;Yağmurlu & Karaman, 1987;Karaman, 1988Karaman, , 1989Hançer & Karaman, 1991, 1993Yağmurlu, 1991;Kibici et al, 1993;Barka et al, 1995;Poisson et al, 2003;Platevoet et al, 2008).…”

Organic‐geochemical characteristics of the Miocene Lycian Basin, western Taurides, Turkey

“…Previous studies of this basin have defined and described the rock units, sedimentary associations, stratigraphy, tectonics and petroleum geology. General geological investigations and reports have been presented by Ö zgü l (1976), Poisson (1977), Gutnic et al (1979), Hayward (1984), Akay et al (1985), Gö rmü ş and Hançer (1997), Flecker et al (1998Flecker et al ( , 2005, Robertson (2000), Sarı and Ö zer (2002) and Poisson et al (2003), who studied the sedimentological character and tectonics of the study area and environs. Petroleum-geological studies have also been carried out; important ones include the works of Altunsoy (1999), Demirel et al (2001Demirel et al ( , 2002Demirel et al ( ) and Ö zçelik et al (2005.…”