干旱区生态环境知识资源中心(Arid): Calcareous nannofossil biostratigraphy of Nag El Quda, South of Dababiya, Eastern side of the Nile Valley, Egypt

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DOI	10.1016/j.jafrearsci.2021.104442
	Calcareous nannofossil biostratigraphy of Nag El Quda, South of Dababiya, Eastern side of the Nile Valley, Egypt
	Faris, Mahmoud; Sabour, Ayman Abdel
通讯作者	Faris, M (corresponding author)，Tanta Univ, Fac Sci, Geol Dept, Tanta 31527, Egypt.
来源期刊	JOURNAL OF AFRICAN EARTH SCIENCES
ISSN	1464-343X
EISSN	1879-1956
出版年	2022
卷号	186
英文摘要	The biostratigraphy of calcareous nannofossils of the upper Paleocene-lower Eocene sequence in Nag El Quda area (South of Dababiya, Eastern Side of the Nile Valley, Egypt carried out in detail. This study of the P-E transition, allow us to recognize some of the prominent and abrupt events that characterize the P/E boundary, and to relocate this boundary with respect to the recent redefinition of the Paleocene/Eocene boundary. The present stratigraphic study of the P/E interval based on close sampling. This study has provided a high resolution litho- and biostratigraphic data based on calcareous nannofossils. The study interval includes from the base to top; El Hanadi, Dababiya, and El Mahmiya members. The P/E boundary is situated at the NP9a/NP9b boundary, which lies at El Hanadi/Dababiya contact. We identify the first occurrence (FO) of excursion taxa (Discoaster anartios, D. araneus, Rhomboaster spp.) at the base of the Eocene. These taxa are adapted to warm climatic conditions that prevailed at this boundary. An abrupt and sharp decrease in the diversity, abundance of the genus Fasciculithus occurs at the NP9a/NP9b (Paleocene/Eocene boundary), and disappeared completely shortly afterwards. The lowermost Eocene sediments studied here only yield F. tympaniformis and F. involutus.
英文关键词	Biozone Nannofossil Paleocene Eocene boundary Nag El Quda Egypt
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000745080100004
WOS关键词	PALEOCENE-LOWER EOCENE ; THERMAL MAXIMUM ; WESTERN DESERT ; CENTRAL SINAI ; KHARGA OASIS ; NANNOPLANKTON ; ASSEMBLAGES ; STRATIGRAPHY ; TRANSITION ; SUCCESSION
WOS类目	Geosciences, Multidisciplinary
WOS研究方向	Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/376884
作者单位	[Faris, Mahmoud] Tanta Univ, Fac Sci, Geol Dept, Tanta 31527, Egypt; [Sabour, Ayman Abdel] Assiut Univ, Fac Sci, Geol Dept, Assiut 71516, Egypt
推荐引用方式 GB/T 7714	Faris, Mahmoud,Sabour, Ayman Abdel. Calcareous nannofossil biostratigraphy of Nag El Quda, South of Dababiya, Eastern side of the Nile Valley, Egypt[J],2022,186.
APA	Faris, Mahmoud,&Sabour, Ayman Abdel.(2022).Calcareous nannofossil biostratigraphy of Nag El Quda, South of Dababiya, Eastern side of the Nile Valley, Egypt.JOURNAL OF AFRICAN EARTH SCIENCES,186.
MLA	Faris, Mahmoud,et al."Calcareous nannofossil biostratigraphy of Nag El Quda, South of Dababiya, Eastern side of the Nile Valley, Egypt".JOURNAL OF AFRICAN EARTH SCIENCES 186(2022).