干旱区生态环境知识资源中心(Arid): Paleocene-Eocene boundary in the Gabal El-Gir, east Qena, Egypt: Paleoenvironment and sequence stratigraphy interpretations

Arid

DOI	10.1016/j.marmicro.2023.102306
	Paleocene-Eocene boundary in the Gabal El-Gir, east Qena, Egypt: Paleoenvironment and sequence stratigraphy interpretations
	El-Sheikh, Islam; Mahfouz, Kamel H.; Al-Ameer, Abdullah O.; Metwally, Amr A.
通讯作者	Mahfouz, KH
来源期刊	MARINE MICROPALEONTOLOGY
ISSN	0377-8398
EISSN	1872-6186
出版年	2023
卷号	185
英文摘要	Comprehensive field, litho-, biostratigraphy, and paleoenvironmental studies of the upper Paleocene-lower Eocene (P-E) boundary interval in the Gabal El-Gir area were conducted. Two selected sections El-Gir-1 and ElGir-2 were investigated. The prevailed paleoenvironmental conditions were discussed in the frame of the nannofossils, planktonic, and benthic foraminiferal assemblages. Benthic foraminifera assemblages indicate a remarkable turnover across the PETM. The extinction of Angulogavelinella avnimelechi at the base of the PETM represents a significant marker for the base of the benthic foraminifera extinction event at this site and other neritic sites in the Tethyan region. The dominance of calcareous planktonic excursion taxa at the base of the PETM indicates adaptation to extremely warm sea surface temperatures and low nutrient levels. Also, our data suggests that the biotic responses to environmental change in the early Eocene resembled those observed in the early Eocene hyperthermals at the nearbay Dababiya and El-Ballas sections. This could indicate that similar processes characterized the Egyptian sedimentary basin during the early Eocene. Stratigraphically, despite the limited distance between the studied sections, the Dababiya Quarry Member (DQM) in El-Gir-1 resemble those of the Global Stratotype Section and Point (GSSP) but reduced in thickness. While in El-Gir-2, the lower part of the DQM was missing. These findings could indicate that the DQM was deposited in a submarine channel. Three third-order depositional sequences were recognized covering the P-E interval. The reconstructed sea level curve shows the presence of eustatic similarities with the global sea level.
英文关键词	Nannofossils and Foraminifera PETM Paleoenvironments Sequence stratigraphy Egypt
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001109625400001
WOS关键词	BENTHONIC FORAMINIFERAL BIOSTRATIGRAPHY ; CALCAREOUS NANNOFOSSIL ASSEMBLAGES ; DABABIYA QUARRY SECTION ; THERMAL MAXIMUM ; WESTERN DESERT ; SEA-LEVEL ; BENTHIC FORAMINIFERA ; STRATOTYPE-SECTION ; KHARGA OASIS ; PALAEOCENE/EOCENE BOUNDARY
WOS类目	Paleontology
WOS研究方向	Paleontology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/397806
推荐引用方式 GB/T 7714	El-Sheikh, Islam,Mahfouz, Kamel H.,Al-Ameer, Abdullah O.,et al. Paleocene-Eocene boundary in the Gabal El-Gir, east Qena, Egypt: Paleoenvironment and sequence stratigraphy interpretations[J],2023,185.
APA	El-Sheikh, Islam,Mahfouz, Kamel H.,Al-Ameer, Abdullah O.,&Metwally, Amr A..(2023).Paleocene-Eocene boundary in the Gabal El-Gir, east Qena, Egypt: Paleoenvironment and sequence stratigraphy interpretations.MARINE MICROPALEONTOLOGY,185.
MLA	El-Sheikh, Islam,et al."Paleocene-Eocene boundary in the Gabal El-Gir, east Qena, Egypt: Paleoenvironment and sequence stratigraphy interpretations".MARINE MICROPALEONTOLOGY 185(2023).