02753nab a2200205 4500 20260520001747.0 260224s2009 xxu Allochthonous blocks misidentified as the basement Implication for petroleum exploration in the SW thrace basin (Turkey) feb. 2009 07/05/2009 ; 06/05/2009 11 p. ; 55-66 Transcripción del resúmen publicado por el autor: The sedimentary sequence of the SW Thrace Basin (NW Turkey) comprises of three major sedimentary packages: a) Cretaceous (Meastrichtien)–Early Eocene package formed as pelagic carbonate, turbidite, shelf and nearshore-fluvial deposits, b) Middle Eocene–Early Oligocene package formed as shallow marine, slope apron and turbidite sediments, c) Middle Miocene–Early Pliocene package formed as alluvial fan-fluvial and nearshore deposits. This basin is structurally complex and its southern margin is represented by a fold-thrust zone. The Westward Propagation of the North Anatolian Fault (WPNAF) intersects the Thrace Basin along its southwestern flank. In the SW Thrace Basin, there are ophiolite and limestone blocks in the sedimentary succession, which previously were interpreted as suture of the Intra-Pontide Ocean, Cretaceous aged Yeniköy Mélange or Olistostromal Unit in the Eocene sediments. In this study these rocks have been defined as allochthonous blocks facies of the Gaziköy Formation aged Middle–Late Eocene. In previous studies the Karaagaç Formation (Early Eocene) was considered to be within oil window and have an average potential for oil and gas generation. According to our data the Karaagaç Formation has a moderate TOC content, is mature and overmature. In the study area, there are potential stratigraphic traps (submarine fans and channels of the Karaagaç and Kesan Formations, fluvial channels of the Fiçitepe Formation and reefs of the Sogucak Formation), potential fractured tuffs (the Gaziköy Formation) and, potential structural traps related to the folds, thrusts and the WPNAF. Although 17 exploration wells have been drilled in the study area and vicinity, no discovery has yet been made. The cause of this may be that the wells were terminated at depths shallower than potential targets or possibly drilling may have been terminated at the allochthonous block facies of the Gaziköy Formation, which is especially derived from ophiolite mélange and was misidentified as basement. 1-4 Journal of Petroleum Science & Engineering 64 ARTICULO Sen, Samil 40665 Yillar, Selin 40666 Kerey, I. Erdal 41082 169688 169688 0 0 0 0 237507 BAAB BAAB 2026-03-05 200044496 0 200044496 2026-03-05 15:11:55 2026-03-05 ARTICULO