干旱区生态环境知识资源中心(Arid): Dinoflagellate cyst evidence for the age and palaeoenvironments of the Upper Eocene-Oligocene Dabaa Formation, Qattara Depression, north Western Desert, Egypt

Arid

DOI	10.1080/01916122.2018.1434696
	Dinoflagellate cyst evidence for the age and palaeoenvironments of the Upper Eocene-Oligocene Dabaa Formation, Qattara Depression, north Western Desert, Egypt
	El Beialy, Salah Y.1; Head, Martin J.2; El Atfy, Haytham 1; El Khoriby, Essam M.1
通讯作者	Head, Martin J.
来源期刊	PALYNOLOGY
ISSN	0191-6122
EISSN	1558-9188
出版年	2019
卷号	43 期号:2 页码:268-291
英文摘要	The palynological investigation of 30 outcrop samples from seven sites in and near the Qattara Depression, north Western Desert, Egypt, has yielded six samples from three sites containing poorly to well-preserved assemblages including dinoflagellate cysts, freshwater algae, acritarchs, pollen and spores. The sites have not been dated previously, but dinoflagellate cyst evidence reveals an early or middle Rupelian (Early Oligocene) age for one sample (overlapping ranges of Tuberculodinium vancampoae and Phthanoperidinium comatum) and early Rupelian or older (occurrence of Lentinia serrata) for another, establishing time equivalence with the Upper Eocene-Oligocene Dabaa Formation. The palynological assemblages reflect fluctuating conditions on the southern margin of the Tethys/Paratethys Ocean, with the frequent co-occurrence of Homotryblium floripes, Pediastrum and Botryococcus reflecting restricted and probably lagoonal marine environments influenced by seasonal river inflow. Despite low global sea levels during the Early Oligocene, marine conditions evidently extended as far south as the southern Qattara Depression. Outcrops in the north Western Desert are typically deeply weathered and barren of palynomorphs, this being the first report of dinoflagellate cysts from surface sections of the Qattara Depression and its surroundings.
英文关键词	dinoflagellate cysts Oligocene Eocene Dabaa Formation Qattara Depression Egypt
类型	Article
语种	英语
国家	Egypt ; Canada
收录类别	SCI-E
WOS记录号	WOS:000461683900008
WOS关键词	DINOCYST STRATIGRAPHY ; MIDDLE MIOCENE ; NILE DELTA ; MAGNETOSTRATIGRAPHIC CALIBRATION ; BIOSTRATIGRAPHY ; SEA ; PALYNOLOGY ; BOREHOLE ; GULF ; SUEZ
WOS类目	Plant Sciences ; Paleontology
WOS研究方向	Plant Sciences ; Paleontology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/217876
作者单位	1.Mansoura Univ, Dept Geol, Fac Sci, Mansoura 35516, Egypt; 2.Brock Univ, Dept Earth Sci, St Catharines, ON L2S 3A1, Canada
推荐引用方式 GB/T 7714	El Beialy, Salah Y.,Head, Martin J.,El Atfy, Haytham,et al. Dinoflagellate cyst evidence for the age and palaeoenvironments of the Upper Eocene-Oligocene Dabaa Formation, Qattara Depression, north Western Desert, Egypt[J],2019,43(2):268-291.
APA	El Beialy, Salah Y.,Head, Martin J.,El Atfy, Haytham,&El Khoriby, Essam M..(2019).Dinoflagellate cyst evidence for the age and palaeoenvironments of the Upper Eocene-Oligocene Dabaa Formation, Qattara Depression, north Western Desert, Egypt.PALYNOLOGY,43(2),268-291.
MLA	El Beialy, Salah Y.,et al."Dinoflagellate cyst evidence for the age and palaeoenvironments of the Upper Eocene-Oligocene Dabaa Formation, Qattara Depression, north Western Desert, Egypt".PALYNOLOGY 43.2(2019):268-291.