Writers : Vazire,M .; Allameh,M .;Moradian,F
Refference : The first international applied geological congress; Department of geology Islamic azad university- Mashhad
Publishing Year : 2010

Abstract :

Sangameh formation is one of the lower Cretacrus formations in kopet-dagh sedimentary basin, NE of iran. Its name is gotten form a village in 70 the km NE of mashhad. The lithoagy of this formation is cinsist of dark grey to greenish shales. 150 sildes prepared. In studying of 3 main groups of polynologic elements (Thet in the primary parts of the formation, the oxygen conditions were low and the rate of deposition was high, but in the end parts of the formation inspite of low oxygen condition and also non-oxygen condition, the preservation of palynomorphs is low and turned to light soms. Because of the low rate of deposition. By the way, the low oxygen condition is so important in hydrocarbon creation and it must study as well.

Subject List : Oxygen fluctuations , Palinostratigraphy