干旱区生态环境知识资源中心(Arid): Palynostratigraphy and paleoecology of a Lower Cretaceous (upper Barremian-lower Aptian) succession in the Shushan Basin, northwestern Egypt: inferences on intra- and inter-basinal correlations

Arid

DOI	10.1127/njgpa/2019/0855
	Palynostratigraphy and paleoecology of a Lower Cretaceous (upper Barremian-lower Aptian) succession in the Shushan Basin, northwestern Egypt: inferences on intra- and inter-basinal correlations
	Mostafa, Tarek F.1; Deaf, Amr S.2; El Soughier, Maher, I 3; Makled, Walid A.1
通讯作者	Makled, Walid A.
来源期刊	NEUES JAHRBUCH FUR GEOLOGIE UND PALAONTOLOGIE-ABHANDLUNGEN
ISSN	0077-7749
出版年	2019
卷号	294 期号:2 页码:177-195
英文摘要	Recent national and international demand for additional resources of the fossil fuel resulted in extensive hydrocarbon exploration activities in Egypt to further explore possible petroliferous rock units that were conventionally deemed as barren or having non-commercial reserves such as the Alam El Bueib Formation. This increased the stress to enrich the lithological correlation of this formation across the north Western Desert to better understand its regional lithological characteristics and thus its potential regional reservoir/source rock quality. Palynostratigraphic analysis of Lower Cretaceous successions in the Tut-1X and Amoun-1X wells in the Shushan Basin, north Western Desert enabled the recognition of the upper Alam El Bueib Formation in both wells, in contrast to a previous study, which suggested non-deposition of this formation in the Amoun-1X well. This highlights the important role of the palynology as a key stratigraphic tool, which helped effectively in recognising this problematic monotone elastic formation, where other marine microfossils are lacking. This also shows that recognition of this formation based on lithological criteria only was impractical and misleading. Marker terrestrial and marine palynomorph taxa recovered from the upper Alam El Bueib Formation enabled dating it as late Barremian-early Aptian and were used to identify two palynological biozones that can be traced out regionally across the Shushan, Matruh, and other nearby basins. These biozones are the early Aptian Hurospora florida-Afropollis operculatus-Pseudoceratium securigerum Assemblage Zone and the late Barremian Stellatopollis barghoornii-Pseudoceratium anaphrissum-Cyclonephelium vannophorum Assemblage Zone. An undifferentiated interval was recorded just below the upper Barremian strata in the Tut-1X well due to very low palynomorph recovery and absence of marker forms. Composition of terrestrial and marine palynomorph assemblages suggests the upper Alam El Bueib Formation was deposited in fluvio-deltaic to proximal inner shelf settings. The Alam El Bueib Formation shows notable regional variations in thickness and considerable lateral and vertical changes in lithology due to local tectonics and relative difference in its depositional settings in the Shushan and Matruh basins. Regionally, the Alam El Bueib Formation shows dual reservoir/source rock characteristics, where thick and poorly fossiliferous sandstone units act as reservoir rocks, while moderately fossiliferous finer elastics and carbonates already acted as intraformational source rock intervals in some parts of the Shushan and Matruh basins.
英文关键词	Palynology biostratigraphy paleoecology regional correlation Alam El Bueib Lower Cretaceous northwestern Egypt Shushan Basin
类型	Article
语种	英语
国家	Egypt
收录类别	SCI-E
WOS记录号	WOS:000501492000004
WOS关键词	NORTHERN WESTERN-DESERT ; SEDIMENTARY ORGANIC-MATTER ; TUNIS 1X BOREHOLE ; KHATATBA FORMATION ; VOCONTIAN BASIN ; PALYNOLOGY ; WELL ; PALYNOFACIES ; STRATIGRAPHY ; BIOSTRATIGRAPHY
WOS类目	Paleontology
WOS研究方向	Paleontology
EI主题词	2019-11-01
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/310395
作者单位	1.EPRI, Explorat Dept, 1 Ahmed El Zomor St, Cairo 11727, Egypt; 2.Assiut Univ, Fac Sci, Geol Dept, Assiut 71516, Egypt; 3.Aswan Univ, Fac Sci, Geol Dept, Aswan 81528, Egypt
推荐引用方式 GB/T 7714	Mostafa, Tarek F.,Deaf, Amr S.,El Soughier, Maher, I,et al. Palynostratigraphy and paleoecology of a Lower Cretaceous (upper Barremian-lower Aptian) succession in the Shushan Basin, northwestern Egypt: inferences on intra- and inter-basinal correlations[J],2019,294(2):177-195.
APA	Mostafa, Tarek F.,Deaf, Amr S.,El Soughier, Maher, I,&Makled, Walid A..(2019).Palynostratigraphy and paleoecology of a Lower Cretaceous (upper Barremian-lower Aptian) succession in the Shushan Basin, northwestern Egypt: inferences on intra- and inter-basinal correlations.NEUES JAHRBUCH FUR GEOLOGIE UND PALAONTOLOGIE-ABHANDLUNGEN,294(2),177-195.
MLA	Mostafa, Tarek F.,et al."Palynostratigraphy and paleoecology of a Lower Cretaceous (upper Barremian-lower Aptian) succession in the Shushan Basin, northwestern Egypt: inferences on intra- and inter-basinal correlations".NEUES JAHRBUCH FUR GEOLOGIE UND PALAONTOLOGIE-ABHANDLUNGEN 294.2(2019):177-195.