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Contributions to the Pleistocene Coral Reefs of the Red Sea Coast, Egypt
Faculty
Science
Year:
2008
Type of Publication:
Article
Pages:
63-85
Authors:
El-Sorogy, Abdelbaset Sabry
Journal:
ARAB GULF JOURNAL OF SCIENTIFIC RESEARCH ARABIAN GULF UNIV
Volume:
26
Research Area:
Science \& Technology - Other Topics
ISSN
ISI:000260151400008
Keywords :
Scleractinian Corals, Pleistocene, Systematic Paleontology, Facies Change, Stratigraphic Setting, Red Sea, Egypt
Abstract:
The Pleistocene coral reefs of the Red Sea coast form discontinuous strip in three morphological units, with elevations range from 10 to 35 m above the present sea level and with maximum width of about 550 m. The morphological steps of the studied reefal units are caused by on-lap during different sea levels, by tectonics, or by erosion during transgression. Facies patterns within reefs exhibit lateral and vertical changes. The lateral development of each unit begins at the shore, covering the whole lagoonal facies and ends at the upper reef slope. These changes either reflect transitions within the depositional environment or they are related to minor/major sea level fluctuations. The vertical pattern shows a transgressive sequence in the lower (youngest) and the upper (oldest) units and a regressive one in the middle unit. Eighty-eight scleractinian species have been identified. They belong to 3 suborders, 8 families, and 27 genera. The stratigraphic range of the majority of the identified species, which have been previously recorded from the recent sediments of study area is extended here to the Pleistocene age. The paleo- and -biogeographic distribution of the studied species indicated that all belong to Indo-Pacific affinity as well as Atlantic-Mediterranean for very few.
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