干旱区生态环境知识资源中心(Arid): Upper Campanian-Maastrichtian calcareous nannoplankton biostratigraphy and paleoecology in Wadi Qena, Eastern Desert, Egypt

Arid

DOI	10.1007/s12517-019-4485-y
	Upper Campanian-Maastrichtian calcareous nannoplankton biostratigraphy and paleoecology in Wadi Qena, Eastern Desert, Egypt
	Hewaidy, Abdel Galil A.1; Mandur, Madhat M. M.2; Farouk, Sherif 2; El Agroudy, Ibrahim S.2
通讯作者	El Agroudy, Ibrahim S.
来源期刊	ARABIAN JOURNAL OF GEOSCIENCES
ISSN	1866-7511
EISSN	1866-7538
出版年	2019
卷号	12 期号:11
英文摘要	The Upper Campanian/Maastrichtian calcareous nannofossils from the Hawashiya and Umm Omeiyied exposed sections at Wadi Qena, have been examined. The studied interval is represented by the Sudr Formation. This formation rests uncomfortably on the Upper Campanian Rakhiyat Formation and is uncomfortably underlain by the Paleocene Dakhla Formation. The studied calcareous nannofossils assemblage is highly diverse and comprises mostly of well-preserved specimens. The assemblages include abundant Watznaueria spp., Arkhangelskiella spp., and Micula spp., in addition to many other taxa. Both studied sections are divided into seven calcareous nannofossils biozones that cover the Upper Campanian-Maastrichtian interval, respectively, the biozones from older to younger: (UC15e/CC22, UC16/CC23a, UC17/CC23b, UC18/CC24, UC19/CC25a, UC20a/CC25b, and UC20b/CC25c) biozones. The paleoecological analysis of calcareous nannofossils in the studied interval depended on a set of statistical indices like the total number of nannofossils, abundance, diversity, fertility, and productivity of the calcareous nannofossils. In addition, some species of calcareous nannofossils are selected to determine cycles of temperature fluctuations in the water surface that ranged between cold and warm. The paleoenvironmental analysis emphasizes the significance of some indicator nannofossil taxa in the reconstruction of the productivity model in the Tethyan Realm, during the Upper Cretaceous times.
英文关键词	Upper Cretaceous Calcareous nannofossils Paleoecology Wadi Qena Eastern Desert
类型	Article
语种	英语
国家	Egypt
收录类别	SCI-E
WOS记录号	WOS:000469761900001
WOS关键词	NANNOFOSSIL BIOSTRATIGRAPHY ; SEQUENCE STRATIGRAPHY ; BOUNDARY ; OCEAN ; ASSEMBLAGES ; INDICATORS ; CARBON ; BASIN
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/2XILL650/214333
作者单位	1.Al Azhar Univ, Geol Dept, Fac Sci, Cairo, Egypt; 2.Egyptian Petr Res Inst, Explorat Dept, 1 Ahmed El Zomer, Cairo 11727, Egypt
推荐引用方式 GB/T 7714	Hewaidy, Abdel Galil A.,Mandur, Madhat M. M.,Farouk, Sherif,et al. Upper Campanian-Maastrichtian calcareous nannoplankton biostratigraphy and paleoecology in Wadi Qena, Eastern Desert, Egypt[J],2019,12(11).
APA	Hewaidy, Abdel Galil A.,Mandur, Madhat M. M.,Farouk, Sherif,&El Agroudy, Ibrahim S..(2019).Upper Campanian-Maastrichtian calcareous nannoplankton biostratigraphy and paleoecology in Wadi Qena, Eastern Desert, Egypt.ARABIAN JOURNAL OF GEOSCIENCES,12(11).
MLA	Hewaidy, Abdel Galil A.,et al."Upper Campanian-Maastrichtian calcareous nannoplankton biostratigraphy and paleoecology in Wadi Qena, Eastern Desert, Egypt".ARABIAN JOURNAL OF GEOSCIENCES 12.11(2019).