Caspian Sea paleofluctuation reconstructing during the Quaternary period

The reconstruction of the Caspian Sea water level fluctuations in the Quaternary period is the main objectives of this research. Thus, with the study of biofacies on 254 cores samples associate to exploration wells (Mazandaran 1 and Gorgan 3 - A) and 150 sediment samples which have been collected from depths of 10 to 800 meters from the sea bed of the Caspian Sea bioindicators and sedimentary indexes were identified. The results of studies of the Quaternary sediments showed that gastropod species are the most important biological evidence for the reconstruction of sea level changing of the Caspian Sea. Also there are alternatively fluctuations in this region that were affected by global climatology impact.