Writers : H. V. Moghaddam; A. Taberi
Refference : Geosciences Scientific Quarterly Journal,No.:51-52,P.:46
Publishing Year : 1383

Abstract :
The upper part of the Shemshak Fonnation at Tazareh area consists of sandstone, siltstone, and shale beds with marine fossils. Based on systematic study of the ichnofossils in these sediments, 9 ichnogenera, in two assemblages have been identified . The first assemblage with low ichnodiversity (Skolithos, Arenicolites, Diplocraterion) occurs in the siltstone and
sandstone beds. This assemblage of ichnoftuna represents the skolithos ichnofacies which fbrmed in a relatively high energy condition. The second assemblage with higher ichnodiversity. (Planolites, Palaeophycus, Neonerites, Cochlichnus, Rhizocorallium, Chondrites) is very common in the shale beds. This assemblage represents the cruziana ichnofacies which forrned in a relatively lower energy condition.
Subject List : Ichnofossils