Teredolites ichnofacies and its sequences stratigraphy position in the upper part of Ziveh Formation, Moghan area, Eastern Azarbaijan province, northwest Iran

A stratigraphic section from the upper part of Ziveh Formation (Middle Miocene) has been surveyed in north Ojagh Kandi village, northeast Kalibar, Azarbaijan province. Ziveh Formation overlayed by Tortonian sediments as an angular unconformity in the studied section and its lower boundary covered by recent alluvium. A diverse body fossil assemblage includes molluscan, plants, and vertebrate collected from this section. Among them, abundant ichnofossils of bivalves on woodground, Teredolites longissimus discovered in a horizon. Occurrence of wooden substrate in this horizon shows first events of rising of the sea level, and its basal background is considerable for the lower boundary for TST. On the other hand, Teredolites bearing horizon indicates beginig of transgressive event in the sequence stratigraphic interpretation of the studied section.