干旱区生态环境知识资源中心(Arid): Remote sensing-guided stratigraphic dissection of an Ediacaran terrestrial molasse basin (Kareim basin, Egypt), with implications for sedimentary evolution

Arid

DOI	10.1016/j.precamres.2019.105589
	Remote sensing-guided stratigraphic dissection of an Ediacaran terrestrial molasse basin (Kareim basin, Egypt), with implications for sedimentary evolution
	Fowler, A.1; Baghdady, A.2; Abdelmalik, K.2; Gad, A.2
通讯作者	Fowler, A.
来源期刊	PRECAMBRIAN RESEARCH
ISSN	0301-9268
EISSN	1872-7433
出版年	2020
卷号	338
英文摘要	The Kareim basin in the Central Eastern Desert is one of the largest Ediacaran post-amalgamation (Hammamat) basins in Egypt. It formed at a time of extensional tectonism (600 +/- 20 Ma) in the northern Arabian-Nubian Shield. The Kareim basin preserves a similar to 6500 m fill of rapidly deposited alluvial fan and lake sediments. Due to monotonous lithology and complex facies variations the stratigraphic architecture of this and other large Hammamat basins is poorly known. In this study, LANDSAT 8 (OLI) data for the Kareim was processed to provide best band ratio and PCA images that allow tracing of sandstone-dominant and conglomerate-dominant packages, revealing a configuration of eight new stratigraphic units (Units 1-8). Units 1-3 are basinwide, while Units 4-8 are localized and partly bounded by intraformational angular unconformities that formed during syn-sedimentary tectonism. Fan palaeoslopes and palaeocurrents were W-directed in Units 1-3, then switched to SW- and S-directed in later units, implying that the provenance areas lay east and north of the basin, not south as in previous basin evolutionary models. This study provides the first RS-guided stratigraphic dissection of a Hammamat basin, and provides a sensitive tool for detecting intraformational unconformities in basins filled with monotonous molasse sequences. It paves the way for the sequence stratigraphic analysis of the Egyptian Hammamat basins.
英文关键词	Alluvial fan Hammamat molasse basin stratigraphy Intraformational unconformities
类型	Article
语种	英语
国家	U Arab Emirates ; Egypt
收录类别	SCI-E
WOS记录号	WOS:000515431900015
WOS关键词	CENTRAL EASTERN DESERT ; ARABIAN-NUBIAN SHIELD ; BANDED IRON-FORMATION ; ALLUVIAL-FAN ; OBLIQUE CONVERGENCE ; SATELLITE IMAGERY ; CORE COMPLEX ; THRUST BELT ; AREA ; GEOCHEMISTRY
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/2XILL650/315363
作者单位	1.UAE Univ, Coll Sci, Dept Geosci, Al Ain, U Arab Emirates; 2.Ain Shams Univ, Fac Sci, Geol Dept, Cairo, Egypt
推荐引用方式 GB/T 7714	Fowler, A.,Baghdady, A.,Abdelmalik, K.,et al. Remote sensing-guided stratigraphic dissection of an Ediacaran terrestrial molasse basin (Kareim basin, Egypt), with implications for sedimentary evolution[J],2020,338.
APA	Fowler, A.,Baghdady, A.,Abdelmalik, K.,&Gad, A..(2020).Remote sensing-guided stratigraphic dissection of an Ediacaran terrestrial molasse basin (Kareim basin, Egypt), with implications for sedimentary evolution.PRECAMBRIAN RESEARCH,338.
MLA	Fowler, A.,et al."Remote sensing-guided stratigraphic dissection of an Ediacaran terrestrial molasse basin (Kareim basin, Egypt), with implications for sedimentary evolution".PRECAMBRIAN RESEARCH 338(2020).