Calcareous nannofossils bioevent throughout the Cretaceous -Tertiary boundary in kh-4 well, Northern Iraq
نویسندگان
چکیده
The specified systematic study of calcareous nannofossils was carried out on successions Shiranish and Aaliji Formations. Four Samples have taken from (Kh-4) well, between (2600-2630) m, Northern Iraq. Twenty-five species were identified. According to the identified taxa, two biostratigraphic biozones determined, oldest youngest: 
 1- Rienhardtites lives Interval Biozone (CC24) Part. 2- Fasciculithus tympaniformis (CP4) Based above biozones, age upper part Formation defined with Early Maastrichtian because missing CC25 CC26 Biozones, lower that concludes Middle Paleocene CP1, CP2 CP3 Biozones.
منابع مشابه
Fungal proliferation at the Cretaceous-Tertiary boundary.
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ژورنال
عنوان ژورنال: Ma?alla? Tikr?t li-l-?ul?m al-?irfa?
سال: 2022
ISSN: ['2415-1726', '1813-1662']
DOI: https://doi.org/10.25130/tjps.v26i1.100