干旱区生态环境知识资源中心(Arid): Paleozoic glaciation in NE Africa: field and remote sensing-based evidence from the South Eastern Desert of Egypt

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DOI	10.1080/00206814.2019.1636416
	Paleozoic glaciation in NE Africa: field and remote sensing-based evidence from the South Eastern Desert of Egypt
	Elhebiry, Mohamed S.1,2; Sultan, Mohamed 2; Abu El-Leil, Ibrahim 1; Kehew, Alan E.2; Bekiet, Mahmoud H.1; Shahid, Islam Abdel 3; Soliman, Nehal M. A.4; Abotalib, Abotalib Z.2,4; Emil, Mustafa 2
通讯作者	Sultan, Mohamed
来源期刊	INTERNATIONAL GEOLOGY REVIEW
ISSN	0020-6814
EISSN	1938-2839
出版年	2020
卷号	62 期号:9 页码:1187-1204
英文摘要	Exhumed Paleozoic glacial deposits and landforms of the North Gondwana are reported here for the first time from the South Eastern Desert (SED) of Egypt. Using field observations and remote sensing datasets (Advanced Land Observing Satellite [ALOS], Phased Array L-band Synthetic Aperture Radar [PALSAR] radar, multispectral Landsat TM datasets, and digital elevation models [DEMs]), we mapped the distribution of Paleozoic glacial features (i.e. deposits and landforms) in the SED. Two main glaciogenic facies were identified in three locations in the SED: (1) massive, poorly sorted, matrix supported, boulder-rich diamictites in Wadi El-Naam and Korbiai, and (2) moderately-sorted, occasionally bedded outwash deposits in Betan area. Inspection of radar, DEMs, and Landsat Operational Land Imager (OLI) images revealed previously unrecognized ENE-WSW trending glacial megalineations (MLs) over the peneplained Neoproterozoic basement rocks in the central sections of the SED, whose trends align along their projected extension with those of glacial features (tunnel valleys and striation trends) reported from Saudi Arabia. The glaciogenic features in the SED are believed to be largely eroded during the uplift associated with the Red Sea opening, except for those preserved as basal units beneath the Nubia Sandstone Formation or as remnant isolated deposits within paleo-depressions within the basement complex. The apparent spatial correlation of the SED glacial features with well-defined Late Ordovician deposits in North Africa and in Saudi Arabia, and the reported thermochronometric analyses and fossil records are consistent with a Late Ordovician age for the SED glaciogenic features and support models that call on the continuation of the Late Ordovician (Hirnantian) ice sheet from the Sahara into Arabia through the SED of Egypt.
英文关键词	Late Ordovician Hirnantian megalineations megagrooves Paleozoic glaciation North Gondwana South Eastern Desert diamictite
类型	Article
语种	英语
国家	Egypt ; USA
开放获取类型	hybrid
收录类别	SCI-E
WOS记录号	WOS:000476211800001
WOS关键词	LATE ORDOVICIAN GLACIATION ; ARABIAN-NUBIAN SHIELD ; ALLAQI-HEIANI-SUTURE ; SAUDI-ARABIA ; SARAH FORMATION ; ICE-FLOW ; DEPOSITIONAL-ENVIRONMENTS ; STRATIGRAPHIC EVIDENCE ; SEQUENCE STRATIGRAPHY ; NORTHERN ETHIOPIA
WOS类目	Geology
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/2XILL650/216320
作者单位	1.Al Azhar Univ, Geol Dept, Cairo, Egypt; 2.Western Michigan Univ, Dept Geol & Environm Sci, Kalamazoo, MI 49008 USA; 3.Egyptian Mineral Resources Author, Dept Reg Geol, Cairo, Egypt; 4.Natl Author Remote Sensing & Space Sci, Geol Dept, Cairo, Egypt
推荐引用方式 GB/T 7714	Elhebiry, Mohamed S.,Sultan, Mohamed,Abu El-Leil, Ibrahim,et al. Paleozoic glaciation in NE Africa: field and remote sensing-based evidence from the South Eastern Desert of Egypt[J],2020,62(9):1187-1204.
APA	Elhebiry, Mohamed S..,Sultan, Mohamed.,Abu El-Leil, Ibrahim.,Kehew, Alan E..,Bekiet, Mahmoud H..,...&Emil, Mustafa.(2020).Paleozoic glaciation in NE Africa: field and remote sensing-based evidence from the South Eastern Desert of Egypt.INTERNATIONAL GEOLOGY REVIEW,62(9),1187-1204.
MLA	Elhebiry, Mohamed S.,et al."Paleozoic glaciation in NE Africa: field and remote sensing-based evidence from the South Eastern Desert of Egypt".INTERNATIONAL GEOLOGY REVIEW 62.9(2020):1187-1204.