The introduction of dinoflagellates of sarcheshmeh formation at the section of dodanlou village and their usage in determining sedimentary paleoenvironment(qochan-khorasan razavi)

Sarcheshmeh formation is one the lower cretaceous formations of the kopet-Dagh basin in the NE of iran. An outcrope of this formation in the section of dodanlu village was studied palynologically this formation has a thickness of 312 meters and its lithilogy includes grey marl and dark grey shale with thin interbeded limestone beds. Studying 135 slides of 27 samples taken from this formation showed that most of the samples contain palynomorph with respect to the fact in the studied slides cyst of dinoflagellates were superior to the palynomorph groups (all the three forms chorate, cavate, proximate can be seen), this studies focus on cysts of dinoflagellates in this study 27 species belonging of 25 genera were identified .According to the fossils collections of dinoflagellates, aptian age is determined for this formation in this section

کلیدواژه ها:

sarcheshmeh formation ، dinoflagellates ، Dodanlou village