干旱区生态环境知识资源中心(Arid): Factors controlling facies distribution during the early Late Cretaceous in the Eastern Desert of Egypt: Paleoenvironmental reconstruction and relationship to sequence stratigraphy

Arid

DOI	10.1016/j.jafrearsci.2020.103877
	Factors controlling facies distribution during the early Late Cretaceous in the Eastern Desert of Egypt: Paleoenvironmental reconstruction and relationship to sequence stratigraphy
	Nagm, Emad; Bamousa, Abdullah O.
通讯作者	Nagm, E
来源期刊	JOURNAL OF AFRICAN EARTH SCIENCES
ISSN	1464-343X
EISSN	1879-1956
出版年	2020
卷号	169
英文摘要	In the context of a high-resolution stratigraphic perspective, facies analysis is carried out to interpret the paleoenvironments that prevailed during the Cenomanian-Turonian sedimentation in the Eastern Desert of Egypt. Particular emphasis is placed on the possible reasons for observed changes in the facies distribution. The facies associations indicate that the mixed carbonate and siliciclastic successions were deposited on a long-extended ramp setting with a gentle dip from a proximal position in the south to a distal position in the north. The late Cenomanian transgression covered the study area and formed a shallow fully marine environment, in which the Galala Formation was deposited. The sea-level rose continuously to reach a maximum during the early Turonian, with a deep subtidal setting in which the Maghra El Hadida and Abu Qada formations were deposited at relatively high and low paleo-depths, respectively. Changes in the facies distribution reveal a strong relationship to sea-level fluctuations; each sea-level stage of the studied sequences is characterized by similar facies associations with the same facies arrangements. In addition, at the proximal southern part of the study area, where shallow facies are expected to occur, deep marine facies are instead recorded, which is interpreted here as a tectonic effect of the Syrian arc folding system. Furthermore, the dominant paleoenvironmental perturbations during the Cenomanian-Turonian as represented by major lateral and vertical litho-and biofacies changes also affected the studied facies distribution. Therefore, the Cenomanian-Turonian facies development in northeast Egypt was not only controlled by eustatic sea-level changes as commonly suggested but was also influenced by tectonic and environmental changes.
英文关键词	Cenomanian Turonian Facies analysis Sequence stratigraphy Galala plateau
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000540671100002
WOS关键词	CENOMANIAN-TURONIAN BOUNDARY ; ISOTOPE STRATIGRAPHY ; CARBONATE RAMP ; ANOXIC EVENT ; WADI QENA ; GALALA PLATEAUS ; BIOSTRATIGRAPHY ; BASIN ; TEMPERATURES ; EVOLUTION
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/2XILL650/324768
作者单位	[Nagm, Emad; Bamousa, Abdullah O.] Taibah Univ, Coll Sci, Dept Geol, Madinah 41477, Saudi Arabia; [Nagm, Emad] Al Azhar Univ, Fac Sci, Dept Geol, Assiut 71524, Egypt
推荐引用方式 GB/T 7714	Nagm, Emad,Bamousa, Abdullah O.. Factors controlling facies distribution during the early Late Cretaceous in the Eastern Desert of Egypt: Paleoenvironmental reconstruction and relationship to sequence stratigraphy[J],2020,169.
APA	Nagm, Emad,&Bamousa, Abdullah O..(2020).Factors controlling facies distribution during the early Late Cretaceous in the Eastern Desert of Egypt: Paleoenvironmental reconstruction and relationship to sequence stratigraphy.JOURNAL OF AFRICAN EARTH SCIENCES,169.
MLA	Nagm, Emad,et al."Factors controlling facies distribution during the early Late Cretaceous in the Eastern Desert of Egypt: Paleoenvironmental reconstruction and relationship to sequence stratigraphy".JOURNAL OF AFRICAN EARTH SCIENCES 169(2020).