干旱区生态环境知识资源中心(Arid): Biostratigraphy and depositional environments of the Palaeocene-Eocene succession at Um El Huwaitat area, Eastern Desert, Egypt

Arid

DOI	10.1002/gj.4024
	Biostratigraphy and depositional environments of the Palaeocene-Eocene succession at Um El Huwaitat area, Eastern Desert, Egypt
	Anan, Tarek; Shahin, Abdalla
通讯作者	Anan, T
来源期刊	GEOLOGICAL JOURNAL
ISSN	0072-1050
EISSN	1099-1034
英文摘要	The Palaeocene-Eocene succession in southwest Safaga, Eastern Desert, Egypt has been studied to determine its lithostratigraphic units, biostratigraphic zonation, microfacies association, and depositional environments. The variation in lithofacies allows the subdivision of the Danian-Ypresian interval into four lithostratigraphic units that are arranged, from base to top, as the Dakhla Shale (only its upper part), Tarawan Chalk, Esna Shale, and Thebes Formation (only its lower part). Moreover, the Esna Shale is further subdivided into four members, arranged from base to top, as El Hanadi, Dababiya Quarry, El Mahmiya, and Abu Had. The depositional setting is interpreted to primarily reflect the relative sea-level changes. The planktonic/benthic (P/B) foraminiferal ratio is indicative of oscillations of depositional settings in normal open marine conditions, ranging from shallow inner to outer neritic environments. Biostratigraphically, the Palaeocene-Eocene succession in the studied area is subdivided into 12 biozones and subbiozones. These are correlated with the standard biozonation of the Palaeocene-Eocene. Deposition of the Palaeocene-Eocene succession in the studied area took place on a relatively stable shelf. Three lithofacies were recognized: shale, marl, and limestone. The shale lithofacies is differentiated into two sub-lithofacies; pure shale and calcareous foraminiferal shale, whereas marl lithofacies contains abundant planktonic foraminifera. The encountered carbonate rocks comprise eight microfacies types. In addition, the studied interval is correlated with the Global Standard Stratotype Section and Point in the Dababiya section, south of Luxor, Egypt.
英文关键词	depositional environments inner to outer neritic environments Palaeocene– Eocene planktonic benthic foraminiferal ratio
类型	Article ; Early Access
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000591852700001
WOS关键词	NORTHWESTERN RED-SEA ; UPPER NILE VALLEY ; FORAMINIFERAL BIOSTRATIGRAPHY ; THERMAL MAXIMUM ; PALAEOCENE/EOCENE BOUNDARY ; STRATOTYPE-SECTION ; DABABIYA COREHOLE ; MIDDLE PALEOCENE ; EXTINCTION EVENT ; STRATIGRAPHY
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/2XILL650/328531
作者单位	[Anan, Tarek; Shahin, Abdalla] Mansoura Univ, Fac Sci, Dept Geol, Mansoura 35516, Egypt
推荐引用方式 GB/T 7714	Anan, Tarek,Shahin, Abdalla. Biostratigraphy and depositional environments of the Palaeocene-Eocene succession at Um El Huwaitat area, Eastern Desert, Egypt[J].
APA	Anan, Tarek,&Shahin, Abdalla.
MLA	Anan, Tarek,et al."Biostratigraphy and depositional environments of the Palaeocene-Eocene succession at Um El Huwaitat area, Eastern Desert, Egypt".GEOLOGICAL JOURNAL