干旱区生态环境知识资源中心(Arid): Palynomorph composition and palynofacies analysis of the Cenomanian Bahariya Formation in the north Western Desert of Egypt: Depositional palaeoenvironment and sequence stratigraphic implications

Arid

DOI	10.25131/sajg.125.0023
	Palynomorph composition and palynofacies analysis of the Cenomanian Bahariya Formation in the north Western Desert of Egypt: Depositional palaeoenvironment and sequence stratigraphic implications
	Mansour, A.; Tahoun, S. S.; Oboh-Ikuenobe, F.; Ahmed, M. S.; Gentzis, T.
通讯作者	Mansour, A
来源期刊	SOUTH AFRICAN JOURNAL OF GEOLOGY
ISSN	1012-0750
EISSN	1996-8590
出版年	2022
卷号	125 期号:3-4 页码:361-378
英文摘要	This study investigates the Bahariya Formation using 39 rock-cutting samples from the Abu Gharadig Basin in the north Western Desert, Egypt. An approach combining palynomorph composition and palynofacies analysis with lithological composition and geophysical gamma ray log values is used to assess biostratigraphic age constraints, prevalent depositional palaeoenvironments, and relative sea level changes. A moderately diverse assemblage comprised mainly of terrestrial palynomorphs versus minor content of marine palynomorphs is identified. Marker spore and pollen taxa are used to name three interval zones of early Cenomanian, and early-middle Cenomanian ages. Quantitative distribution of particulate organic matter using cluster analysis reveals two palynofacies assemblages: an older assemblage dominated by phytoclasts (mainly wood particles); and a younger assemblage characterised by moderate abundances of amorphous organic matter and phytoclasts. Palynofacies analysis suggests deposition of the Bahariya Formation in fluvio-deltaic to inner neritic shelf environments. Based on the pronounced stratigraphic variations in the particulate organic matter composition, including terrestrial:marine palynomorph ratio, lithological and gamma-ray log data, three complete transgressive-regressive sequences and one incomplete sequence and their systems tracts are defined. The transgressive-regressive trends reflect 3(rd) order sequences. Additionally, successive changes in relative sea level indicate a continuous rise at the topmost part of the succession.
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000933380800008
WOS关键词	OIL-FIELD ; STRUCTURAL EVOLUTION ; PALYNOLOGY ; MIDDLE ; BASIN ; SUCCESSION ; SEDIMENTS ; SYSTEMS ; POLLEN ; OASIS
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/2XILL650/394520
推荐引用方式 GB/T 7714	Mansour, A.,Tahoun, S. S.,Oboh-Ikuenobe, F.,et al. Palynomorph composition and palynofacies analysis of the Cenomanian Bahariya Formation in the north Western Desert of Egypt: Depositional palaeoenvironment and sequence stratigraphic implications[J],2022,125(3-4):361-378.
APA	Mansour, A.,Tahoun, S. S.,Oboh-Ikuenobe, F.,Ahmed, M. S.,&Gentzis, T..(2022).Palynomorph composition and palynofacies analysis of the Cenomanian Bahariya Formation in the north Western Desert of Egypt: Depositional palaeoenvironment and sequence stratigraphic implications.SOUTH AFRICAN JOURNAL OF GEOLOGY,125(3-4),361-378.
MLA	Mansour, A.,et al."Palynomorph composition and palynofacies analysis of the Cenomanian Bahariya Formation in the north Western Desert of Egypt: Depositional palaeoenvironment and sequence stratigraphic implications".SOUTH AFRICAN JOURNAL OF GEOLOGY 125.3-4(2022):361-378.