Türkiye Jeoloji Bülteni

Evolution of Taurus Carbonate Platform in Isparta Bend (Western Taurus)

Abstract: Hoyran neritic carbonate platform which is a typical area for Taurus Carbonate Platform is initiatedto develop by the formation of an E - W trending gravity fault, which called Hoyran fault, at southern foot of Sultandağ during Lias. One of the characteristic sequences of Taurus Carbonate Platform which formed, in especially,during Mesozoic to Low Tertiary is exposed on the northern internal margin of İsparta Bend (Hoyran Basin). The sequence is composed of typical neritic carbonates deposited by a transgressing sea in overlap character from S W toward NE. Although the sequence, which is continuous from Upper Triassic to Upper Lutetian, is represented by onlylittoral to neritic carbonates up to Maastrichtian, pelagic facies also initiates to deposite locally between Maastrichtian and Upper Lutetian. Ultimately, deposition is ceased by the formation of a flysch facies.The platform, which was a stable, shallow-marine basin of deposition by Maastrichtian, is first initiated todestruct by vertical movements during Maastrichtian. Afterwards, the destruction is continued by predominantly tensional stress and intervening two compressional stress with short duration, up to the present day. Arızlı ophioliticmelange is emplaced on platform by the first compressive orogeny at the end of Upper Lutetian, and north and northern parts of platform start to uplift. The uplifting is continued during Lower to Middle Oligocene time, and sea goesbackwards south to southwestward (Regions of İsparta, Burdur and Denizli). The study area is complately emerged bythe second (compressional phase at the end of Middle Oligocene, and local thrusts are formed. Some phases of rifting,such as regional doming, faulting and volcanism are developed on the northern internal margin of İsparta Bendcontrolled by normal block - faulting from Middle Oligocene to the present day. The tectonic activity is also beingcontinued under the control of normal block - faulting in the present day.On the other hand, Taurus Mesozoic to Lower Tertiary Carbonate Platform is mostly different from Africa toArabic Platform, and it may be thought that Antalya Naps might have been emplaced from E to W.