P545 DEEP SOURCES OF HYDROCARBON FORMATION IN THE SOUTH CASPIAN OIL-GAS BEARING BASIN IBRAGIM GULIYEV and ELMIRA ALIYEVA Azerbaijan Academy of Sciences Geology Institute H. Javid avenue 29A 370143 Baku Azerbaijan 1 Introduction South Caspian basin is considered to be one of the richest and oldest oil-gas producing areas in the world. High rates of sedimentation being of avalanche sedimentation nature at some stages of basin evolution up (to 2 5 km/Ma in Low Pliocene) led to the formation of thick sedimentary series reaching 25-30 km in central deep-seated part of basin.. Due to abnormally rapid sedimentation and formation of