OIL POSSIBILITIES OF DUPLEX STRUCTURES IN THE AMIK-REYHANLI BASIN, SETURKEY

The Amik-Reyhanli Basin is situated in the south of Turkey, near the S yrian border. The Dead Sea fault, which crosses the Lebanon and enters Turkey in the Antakya region, forms the basin Is eastern boundary. It s basement is composed of Upper Cretaceous Kocali-Karadut ophiolites. Seismic interpretations indicate that a Mio-Pliocene structure exists in the Amik region, and this was originally interpreted by exploration geologists to be a faulted anticline. However, careful seismic interp retation now suggests that the structure is a ''triangle zone'', resul ting from activity in the Dead Sea fault-zone in the east and the Aman os fault to the west. It is suggested that duplex structures related t o this triangle zone are present beneath the Cretaceous ophiolites, an d constitute oil-prospective areas. Esso Oil Co. interpreted this posi tive structure as a faulted anticline, and recently drilled Well Amik- 1, which was dry, in order to test the oil possibilities of Tertiary c lastics and carbonates. The well terminated in the Kocali-Karadut ophi olites. The underlying duplex structures were not reached, and the oil possibilities of Upper Cretaceous and Jurassic-Triassic carbonates in these duplexes therefore remain to be tested.