An olistostrome–mélange belt formed along a suture: Bornova Flysch zone, western Turkey

Kinematic reconstructions and magmatic evolution illuminating crustal and mantle dynamics of the eastern Mediterranean region since the late Cretaceous

“…In this area, the latest Cretaceous-early Paleocene sedimentary and ophiolitic mélange was then folded and sheared toward the south, forming the Bornova flysch zone [Robertson et al, 2009;Okay et al, 2012]. Another consequence of this second collisional event was the development of a north-vergent fold-and-thrust-belt along the eastern Balkans and the Pontides since the middle-late Eocene (figures 9 and 10) [Doglioni et al, 1996;Yılmaz et al, 1997].…”

“…Okay et al, 2012]. However, the continuous E-W trending late Cretaceous Balkans-Pontides magmatic arc and Eocene calcalkaline magmatic province emplaced from the Chalkidiki peninsula to the eastern Pontides suggest a continuous E-W trending subduction zone that progressively migrated southward through this time (figures 8a-g and k-n).…”

“…Paleocene terrigeneous or ophiolite-derived sedimentary matrix [Okay et al, 2001b[Okay et al, , 2012Robertson et al, 2009]. This unit is folded and sheared toward the southwest and unconformably overlaid by undeformed Eocene sediments [Robertson et al, 2009].…”

Preface

“…They formed part of a very large olistostromes-mélange belt between the Menderes Massif and the İzmir-Ankara suture, which he called the Bornova Flysch Zone (Okay & Siyako, 1993). Subsequent studies in the Bornova Flysch Zone with paleontologists Demir Altıner and İsmail Işıntek showed the presence of condensed sedimentary sequences similar to those found in the Lycian Nappes in the Taurides (Okay & Altıner, 2007;Okay, İşintek, Altıner, Özkan-Altıner, & Okay, 2012).…”

Jurassic and Cretaceous radiolarian assemblages from the Bornova mélange in northern Karaburun Peninsula (western Turkey) and its connection to the İzmir–Ankara mélanges

“…The western segment between İzmir and Balıkesir juxtaposes the Sakarya Zone against the Bornova Flysch Zone (BFZ) (Okay, Işıntek, Altıner, Özkan-Altıner, & Okay, 2012). The eastern segment marks the boundary between the Tavşanlı and Sakarya zones and is outlined by a major Cretaceous blueschist-ophiolite belt (Okay et al, 1996).…”