干旱区生态环境知识资源中心(Arid): Early Cretaceous palynoflora from palaeotropics of NE Africa (correlation and significance): an example from the Shushan Basin, Egypt

Arid

DOI	10.3301/IJG.2023.10
	Early Cretaceous palynoflora from palaeotropics of NE Africa (correlation and significance): an example from the Shushan Basin, Egypt
	Mahmoud, Magdy S.; Khalaf, Miran M.; Moawad, Abdel-Rahim M. M.; Temraz, Amal A.
通讯作者	Mahmoud, MS
来源期刊	ITALIAN JOURNAL OF GEOSCIENCES
ISSN	2038-1719
EISSN	2038-1727
出版年	2023
卷号	142 期号:2 页码:165-182
英文摘要	We re-assessed and re-evaluated the diverse spores and pollen associations, presently recovered from clastics of the Shushan Basin. Eight (informal) Early Cretaceous (Valanginian to middle Cenomanian) spores/pollen zones are suggested, dated and correlated with regional/interregional records. Palynological dating offered bases for borehole stratigraphic resolution and basin correlation. It permitted revision of the homogeneous Early Cretaceous sediments of the borehole. Intrabasinal correlation, based on closely-spaced palynologicallyproductive samples, revealed the existence of an undetected sediment hiatus east of the basin, manifested by the wedging/missing of the Aptian Dahab clastics from west to east. The Shushan palynoflora exhibits great similarity with their counterparts in other provinces of the Northern Gondwana continent. But, however, A fern-dominated hygrophilous spores, along with Classopollis pollen, validated previous assumptions that humid conditions were responsible for the delayed appearance and scarcity of Dicheiropollis pollen in NE Africa (Egypt, Libya and Sudan), by the late Hauterivian. This humidity is thought to have triggered the production of Afropollis in the regional North African records, which reached an acme. Three main peaks of this pollen are inferred from the late Aptian, early Albian and early-middle Cenomanian intervals of the Shushan-1X well. Chronologically, these peaks can be of great stratigraphic value in NE Africa or other areas in Northern Gondwana that witnessed wet palaeoclimates during the Early Cretaceous.
英文关键词	Valanginian to Cenomanian spores pollen biostratigraphy palaeogeography Northern Gondwana
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001016754700001
WOS关键词	NORTHERN WESTERN DESERT ; TUNIS 1X BOREHOLE ; ANGIOSPERM POLLEN ; DAKHLA OASIS ; PALYNOLOGY ; STRATIGRAPHY ; SPORES ; RECONSTRUCTION ; PALYNOMORPHS ; SEDIMENTS
WOS类目	Geology ; 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/2XILL650/397083
推荐引用方式 GB/T 7714	Mahmoud, Magdy S.,Khalaf, Miran M.,Moawad, Abdel-Rahim M. M.,et al. Early Cretaceous palynoflora from palaeotropics of NE Africa (correlation and significance): an example from the Shushan Basin, Egypt[J],2023,142(2):165-182.
APA	Mahmoud, Magdy S.,Khalaf, Miran M.,Moawad, Abdel-Rahim M. M.,&Temraz, Amal A..(2023).Early Cretaceous palynoflora from palaeotropics of NE Africa (correlation and significance): an example from the Shushan Basin, Egypt.ITALIAN JOURNAL OF GEOSCIENCES,142(2),165-182.
MLA	Mahmoud, Magdy S.,et al."Early Cretaceous palynoflora from palaeotropics of NE Africa (correlation and significance): an example from the Shushan Basin, Egypt".ITALIAN JOURNAL OF GEOSCIENCES 142.2(2023):165-182.