干旱区生态环境知识资源中心(Arid): Sequence stratigraphic framework of the Upper Eocene-Oligocene succession, northwest Birket Qarun, Fayum-Egypt

Arid

DOI	10.1007/s12665-021-09646-y
	Sequence stratigraphic framework of the Upper Eocene-Oligocene succession, northwest Birket Qarun, Fayum-Egypt
	El-Younsy, Ahmed-Reda M.; Salman, Abdelhamid M.
通讯作者	Salman, AM (corresponding author), Assiut Univ, Fac Sci, Geol Dept, Assiut 71516, Egypt.
来源期刊	ENVIRONMENTAL EARTH SCIENCES
ISSN	1866-6280
EISSN	1866-6299
出版年	2021
卷号	80 期号:9
英文摘要	The Upper Eocene-Oligocene sequence exposed northwest Birket Qarun; Fayum district covers two rock units, Qasr El-Sagha (Temple and Dir Abu Lifa members) and Gebel Qatrani formations were re-evaluated by sequence stratigraphy. Six depositional sequences were recognized based on facies geometry, and sedimentological aspects. The first sequence (Temple Member) was accumulated under marginal intertidal flat environment indicating highstand deposits. The second (the lower Dir Abu Lifa Member) displays a regressive sedimentary facies starting with progradational delta front environment reflecting lowstand deposits followed upward by a lagoonal environment indicating transgressive/highstand deposits. The third (the top of the Dir Abu Lifa Member) was accumulated under a low sinuosity stream reflecting lowstand deposits. The fourth which constitutes the topmost of Dir Abu Lifa Member initiating near-shore shallow marine points to transgressive sediments, followed upward by fluvial sediments reflecting highstand deposits. The fifth (the Lower of Gebel Qatrani Formation) accumulated as point-bar deposits demonstrating lowstand deposits. The last occupies the main of Gebel Qatrani Formation initiates with restricted riverine marking lowstand deposits, followed upward by several fining upward cycles that were accumulated in fluvial and flood plain conditions with evidence of tidal influence on sedimentation near its top denoting transgressive deposits. Several minor transgressive episodes accompanied by tidal influence on sedimentation are noticed near the top, which may reflect gradual subsidence of the Oligocene alluvial plain. The area is subjected to relative sea-level changes that show a similarity with the global sea level. The base-level fluctuations are mainly controlled by the regional tectonic setting.
英文关键词	Sequence stratigraphy Systems tracts Facies analysis Depositional environments Sea-level fluctuations
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000668945100002
WOS关键词	WESTERN DESERT ; EVOLUTION ; MIDDLE ; ARCHITECTURE ; DEPRESSION ; RESERVOIR ; NORTHERN ; AFRICA ; HITAN
WOS类目	Environmental Sciences ; Geosciences, Multidisciplinary ; Water Resources
WOS研究方向	Environmental Sciences & Ecology ; Geology ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/350112
作者单位	[El-Younsy, Ahmed-Reda M.; Salman, Abdelhamid M.] Assiut Univ, Fac Sci, Geol Dept, Assiut 71516, Egypt
推荐引用方式 GB/T 7714	El-Younsy, Ahmed-Reda M.,Salman, Abdelhamid M.. Sequence stratigraphic framework of the Upper Eocene-Oligocene succession, northwest Birket Qarun, Fayum-Egypt[J],2021,80(9).
APA	El-Younsy, Ahmed-Reda M.,&Salman, Abdelhamid M..(2021).Sequence stratigraphic framework of the Upper Eocene-Oligocene succession, northwest Birket Qarun, Fayum-Egypt.ENVIRONMENTAL EARTH SCIENCES,80(9).
MLA	El-Younsy, Ahmed-Reda M.,et al."Sequence stratigraphic framework of the Upper Eocene-Oligocene succession, northwest Birket Qarun, Fayum-Egypt".ENVIRONMENTAL EARTH SCIENCES 80.9(2021).