Writers : Mafi,Abradat
Refference : The 19th Symposium on geosciences;Tehran
Publishing Year : 1379

Abstract :

Calcareous Nannoplankton are the most important fossils for age determination of Neogene deposits. By this means, a part of relatively thick sequence of Neogene deposits were selected at north_west of Kashmar city, 20 km away.
In the west of Aliahad_e_keshmar village this sequence is constituted of four members that are marl, lower sandstone-marl. Marl_gypsiferous marl, and upper sandstone-marl from the bottom lo the top. respectively. Two members of the tower part were mesured in Feb. 2000 and 68 samples were selected and treated for study.
In this way, 2 genera and 6 taxa of family Ceratolithaceae (Horseshoe-shaped Nannoplankton) were iden!ifie4. A rding to the stratigraphic range of this species the interval between NTN1IB and NNI2 of Martini standard zonation (1971) that correspond to the upper part of Messinian stage (upper Miocene) and the lower part of Zanclean stage (lower Plioeene) was determined for the upper part of the lower sandstone-marl member

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Subject List : Carbonate Nannofossil