Geniculate coralline algae from the pliocene shagra formation at wadi abu dabbab, marsa, alam area, red sea coastal plain, egypt

Document Type : Research Paper

Author

Department of Geology, Faculty of Science, Cairo University, Egypt

Abstract

Abstract: The Pliocene succession in Wadi Abu Dabbab, Marsa Alam area, Red Sea coastal plain is litohstratigraphically subdivided into Gabir, Shagra and Samadai formations in addition to the Pleistocene raised beaches and coral reefs. Lithostratigraphically, in Wadi Abu Dabbab that represents the main investigated section where the Shagra Formation unconformably overlies the Pliocene Gabir Formation and unconformably underlies the Samadai Formation (Plio-Pleistocene age) and represented by mixed siliciclastics and carbonates succession. This formation is highly fossilifrous with coralline red algae in form of erect, in situ crusts, rhodoliths, as well as fragments and corals, bivalved shell fragments, bryozoans, large benthonic and palnktonic foraminifera. The coralline red algae and foraminifera are important constituents of Shagra Formation and highly abundant. This carbonate facies is dominated by different assemblage of coralline red algae in the forms of geniculated and nongeniculated coralline algae. The coralline algal limestone of Shagra Formation contains well preserved geniculate coralline algal species of genus Amphiroa that represents the main target of this study. The systematic study and the taxonomic investigations carried out on the coralline red algae led to the recognition of eleven geniculated coralline algal species that described for the first time in the studied area. The present paper documents eight coralline algal species of genus Amphiroa namely Amphiroa anchiverricosa, A. ephedraea, A. fortis, A. fragilissima, A. prefragilissima, A. prerigida, A. rigida, A. tani, and one new species Amphiroa dabbabensis Hamad for the first time as well as Corallina p r i s c a , Jania guamensis, Subterraniphyllum sp.. The present geniculate coralline algal assemblage is associated with the nongeniculated and dasycladalean algae, this association points that the coralline algal reefal limestone of the Shagra Formation was deposited in the intertidal to shallow subtidal environments at a depth of 10-3 0 m in a shallow warm marine water environments under low energy conditions favorable for reefal growth and rhodoliths formation. The fossiliferous arkoses and conglomerates, alternating with the coralline algal limestone of Shagra and Samadai formations, were derived from the nearby Precambrian basement, transported by streams during short-lived pluvialepisodes and deposited in a very shallow intertidal- beach environment

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Adey W. Ho 1979. Crustose coralline algae as micro-environmental indicators
Adey, W. H., MacIntyre, I. G. 1973. Crustose coralline algae: A re - evaluation in the geologic sciences.
Geological Society of American Bulletin, 84: 883- 904.
Akkad, S. Dardir, A. 1966. Geology of the Red Sea coast in the area between Ras Shagra and Marsa
Alam, with short not on result of exploratory work of Gabal El Rusas lead - Zinc deposits. Geological
Survey of Egypt, No. 3, 67p.
Al-Rifaiy, I. A., Cherif, O. H. 1989. Paleogeographic significance of Pliocene and Pleistocene megainvertebrates
of the Red Sea and the Gulf of Aqaba.- J. Univ. Kuwait (Sci.), 16 (2):367-399 .
Bassi, D., Woelkerling, W,J., Nebelsick, J.H., 2000. Taxonomy and biostratigraphical reassessment of
Subterraniphyllum Elliott (Corallinales, Rhodophyta). Palaeontology, 43 (3): 405-425 .
Beadnell, H. J. 1924. Report on the geology of the region of the Red Sea coast between Qusier and Wadi
Ranga. Petroleum Research Bull., 13: 23p, Cairo .
Beckmann, J.P., Beckmann, R.C. 1966. Calcareous algae from the Cretaceous and Tertiary of Cuba.
Shweizerische Paleontology, 85 :1-45 .
Bosence, D. W. J., 1991. Coralline algae: mineralization, taxonomy and paleocology. In: Riding, J. (ed.).
Calcareous Algae and Stromatolites. Springer Verlag, Heidelberg.
Conti, 1950
Conoco-EGPC 1987. Geological map of Egypt-NG 36 SE Gabal Hamata. Scale 1: 500000 Edited by
Klitzsch, E., List, F., Pöhlmann, G.; Coral and the Egyptian General Petroleum Corporation, Cairo,
Egypt
Dullo, W.-C., 1990. Facies, fossil record and age of Pleistocene reefs from the Red Sea (Saudi Arabia).-
Facies 22, 1-46.
El-Akkad, S., Dardir, A., 1966. Geology of the Red Sea coast between Ras Shagra and Marsa Alam
with short notes on the exploratory work at Gebel El-Rusas lead-zinc deposits.- Geol. Surv. Egypt
Paper No. 35, 1-67 .
El-Asmar, H. M., 1997. Quaternary isotope stratigraphy and paleoclimate of coral
reef terraces, Gulf of Aqaba, South Sinai,Egypt.- Quaternary Science Reviews, 16: 911-924.
El-Asmar, H. M. and Abdel-Fattah, Z. A., 2000. Lithostratigraphy and facies development of the
Neogene- Quaternary succession in the Marsa Alam area, Red Sea coastalplain, Egypt.- N. Jb. Geol.
Paläont. Abh., 217 (3): 397-431.
El Moursi, M. (1993): Pleistocene evolution of the reef terraces of the Red Sea coastal plain between
Hurghada and Marsa Alam, Egypt.- Journal of African Earth Sciences 17(1): 125-127.
El Moursi, M., Hoang, C.T., El-Fayoumy, I.F., Hegab, O. and Faure, H., 1994. Pleistocene evolution of
the Red Sea coastal plain, Egypt: Evidence from uranium-series dating of emerged reef terraces.-
268 Hamad
Quaternary Science Reviews 13: 345-359 .
Elliott, G.F. 1957. Subterraniphyllum, a new Tertiary calcareous alga . epiphytic crustose Corallinaceae
of the British Isles. By. Phycol. 1., 8: 343-408 .
El-Akkad, S. and Dardir, A. (1966): Geology of the Red Sea coast between Ras Shagra and Marsa Alam
with short notes on the exploratory work at Gebel El-Rusas lead-zinc deposits.- Geol. Surv. Egypt
Paper No. 35: 1-67.
Hamad, M. M., 2008 a. Algal Biostratigraphy of some Lower Miocene Sequences, North Eastern Desert,
Egypt. International Journal of algae, 10 (1):79 - 102.
Hamad, M. M. 2008 b. Coralline red algae from the Early Pliocene Shagra Formation at Wadi Wizer,
Red Sea coast, Egypt. And their implications in biostratigraphy and paleoecology - International
journal of Algae,10 (2): 179- 208
Hamad, M.M. 2020 .Coralline red algae from the Lower Pliocene Shagra Formation of Wadi Wizer,
Red Sea coast, Egypt: Biofacies analysis, systematics and palaeoenvironmental implications,
Geopersia, 10 (1): 1-21.
Hamad, M., Orabi H., 2021. Coralline Red Algae and Microfacies studies as environmental indicators:
A case study from the Gharamul formation, Gulf of Suez Region, Egypt, Geopersia, 11(2): 411-430
Hathout, N, H., Orabi, H. O., 1995. Contribution to the lithofacies, geochemistry and paleoecology of
some Miocene - Pliocene exposures in Marsa Alam area, Red Sea coast, Egypt. Egyptian Journal of
Geology, 39 (2): 769 - 792 .
Ishijima, W. 1954. Cenozoic coralline algae from Western Pacific, Tokyo. (Privately Printed) .
Issawi, B., Francis, M., El Hinnawy, M., Mahanna, A., & El Deftar, I. 1971. Geology of Safaga - Qusier
coastal plain and Rabab area, Egypt. Ann. Geological Survey of Egypt, 1: 1 -20 .
Johnson, J. H. 1955. LowerTertiary Corallinae algae from Trinidad, British West Indies. Eclogae Geol.
Helv., 48 (1): 69 - 78 .
Johnson, J. H. 1957. Calcareous algae from Saipan Mariana Islands, part 3. Paleont. U.S.Geol. Surv.
Prof. Pap., 208E: 209- 246 .
Johnson, J. H. 1961. Fossil algae from Eniwetok, Funafuti, and Kita - Daito - Jima. Professional. Paper
of U. S. Geoogical Survey, 260: 907 - 950 .
Johnson, J. H. 1964. Miocene coralline algae from northern Iraq. Micropaleontology, 10 (4): 477- 485 .
Johnson, J. H. 1965. Tertiary red algae from Borneo. Bull. British Mus (Natural History), Geology, 11
(6): 257- 280 .
Khalifa, H., 1984. Pliocene coralline algae, south of Safaga (Red Sea, Egypt) -. Qatar Univ. Sci. Bull.
(4): 185-204 .
Khalifa, H., Boukhary, M. A., 1982. Coralline Algae from the Neoegne and Pleistocene Sequence of
Mersa Alam, Red Sea, Egypt.- Qatar Univ. Sci. Bull. (2): 209-224 .
Kishore, S., Singh, A.P., Jauhri, A.K., Misra, P.K., Singh, S.K., Lyngdoh, B.C. 2009. Coralline algae
from the Prang Formation (Eocene) of the South Khasi Hills, Meghalaya, India .
Kishore, S., Singh, A.P., Jauhri, A.K., Singh, S.K., Misra, P.K., Tiwari, R.P. 2011. Middle Eocene
calcareous algae from the Prang Formation of the Therria Area, East Khasi Hills, Meghalaya ,
Kora, M. and Abdel-Fattah, Z., 2000. Pliocene and Plio-Pleistocene macrofauna from the Red Sea
coastal plain (Egypt): Biostratigraphy and biogeography.- Geologica et Palaeontologica 34: 219-235.
Kora, M., Ayyad, A., El-Desouky, H., 2013. Microfacies and environmental interpretation of the
Pliocene-Pleistocene carbonates in the Marsa Alam area, Red Sea coastal plain, Egypt. Journal of
Environmental Sciences, 42 (1): 155 -182 .
Kundal , P. 2010. Biostratigraphic, paleobiogeographic and Paleoenvironmental significance of
calcareous algae, p.125-132. In: Applied Micropaleontology (Eds. Kundal, P. and Humane, S.K.),
Special issue of Gondwana Geological Magazine, 25 (1).
Kundal, P. 2011. Generic distinguishing characteristics and stratigraphic ranges of fossil corallines: an
update. Journal Geological Society of India, 78: 571-586.
Kutch, Gujarat. Geophytology, 9: 88-90.
Kundal, P. 2011. Generic distinguishing characteristics and stratigraphic ranges of fossil corallines: an
update. Journal Geological Society of India, 78: 571-586.
Kundal, P. Humane, S. K. 2002. Geniculate coralline algae from Middle Eocene to Lower Miocene
of Marsa Alam area, Gujarat, India. Gondwana Geological Magazine, 17(2): 89-101.
Kundal, P. Humane, S. K. 2003. Corallina, a geniculate coralline alga from Middle Eocene to Lower
Geopersia 2024, 14(2): 249-270 269
Miocene of Marsa Alam area, Gujarat, India, p.261-275. In: Recent Developments in Indian
Micropaleontology (Ed. Kundal, P.), Gondwana Geological Magazine, special volume 6 .
Kundal , P. Humane, S. K. 2006a. Record of Metagoniolithon (Corallinales, Rhodophyta) from the
Burdigalian of western India. Current Science, 91(2): 221-224.
Kundal, P. Humane, S. K., 2006b. Jania, a geniculate coralline alga from Middle Eocene to Lower
Miocene of Marsa Alam area, Gujarat. Journal Geological Society of India, 68(4): 630-638.
Kundal , P., Humane, S. K., 2007a. Stratigraphic, paleobiogeograhic and paleoenvironmental
significance of Mesophyllum, a nongeniculate coralline alga from western Marsa Alam area (Middle
Eocene to Oligocene), India, p. 145-154. In: Micropaleontology: Application in Stratigraphy
and Paleoceanography (Ed. Sinha, D.K.), Narosa Publishing House Pvt. Ltd., New Delhi.
Kundal, P., Mude, S. N. 2009. Geniculate coralline algae from the Neogene-Quaternary sediments in
and around Porbandar, Southeast coast of India. Journal Geological Society of India, 74: 267-
274.
Kundal, P., Kundal, M. P. 2011. Calcareous algae from Middle Eocene to early Miocene onshore
sequence of Marsa Alam area Basin,western India: paleoenvironmental significance and
hydrocarbon perspective, p. 251-259. In: Sedimentary Basins of India (Eds. Kundal, P. and Pophre,
A.M.), Gondwana Geological Magazine Special Volume 12.
Kundal , P., Wanjarwadkar, K. M. 2000. Jania Lamouroux from the Late Paleocene Limestone of
Middle Andaman Island, Andaman, India. Proceedings of XVI Indian Colloquium on
Micropaleontology & Stratigraphy, NIO, Goa, Oil and Natural Gas Corporation Limited Bulletin
37:227-237.
Lemoine, M. P. 1966. Calcareous algae from the Cretaceous andTertiary of Cuba, Schweizerische
Palaontologiscle Abhandlunge. V.85, pp. 1-42.
Littler, M. M., Littler, D. S., Hanisak, M. D. 1991. Deep water rhodoliths distribution, productivity, and
growth form history at sites of formation and subsequent degradation. Jorunal of Marine Biology and
Ecology, 150: 163-182 .
Littler, M.M., Littler, D.S, Blair, S.M., Norris, J.N. 1986. Deep- water plant communities from an
uncharted seamount of San Salvador Island, Bahamas: distribution, abundance and primary
productivity. Deep Sea Research, 33: 881-892 .
Mahran, T. M., 1990. Sedimentology and general stratigraphy of the Pliocene sediments of the Red Sea
coastal area., Egypt. Ph. D. Thesis, Assuit university, 345p .
Mahran, T. M., 2000. Cyclicity and sequence stratigraphy of syn-rift Late Neogene mixed carbonatessiliciclastics
of the area between Wadi Zug El-Bohar and Wadi Dabr, Red Sea, Egypt.- Egypt . J.
Geol., 44 (2): 237-275 .
Mastrori lli, V. I. 1968. Caratteri Morphologici E structturali di on Esemplare Fertile Di
“Subterraniphyllum” Elliott Rinvenuto Nell Oligocene Di Ponzone (Piemonte). Rivista Italiana
di Paleontologia e Stratigrafia. 74 (4): 1275-1288.
Misra, P. K., Jauhri, A. K., Si ngh, S. K., Ki shore, S., Chowdhury, A. 2001. Coralline algae from the
Oligocene of Marsa Alam area, Gujarat, India. Journal of the Palaeontological Society of India,
46: 59-76.
Misra, P. K., Jauhri, A. K., Singh, S. K., Kishore, S. 2006. Coralline algae from Fulra Limestone (Middle
Ecocene) of Marsa Alam area, Gujarat, western India. Journal Geological Society of India, 67 (4):
495-502.
Mude, S. N. Kundal, P. 2011. Subterraniphyllum thomasii Elliott, fossil calcareous alga: the
Evolutionary link between geniculate and nongeniculate coralline algae: a hypothesis. Open Journal
of Geology, 1: 51-55.
Mude, S. N. Kundal, P. 2012. Additional coralline algae from the Lower Miocene to Late Holocene
sediments of the Porbandar Group, Gujarat. Journal Geological Society of India, 79: 69-76.
Mude, S. N., Kundal, P., and Shashikant D. R., 2021. Coralline Algae from the Late Pleistocene Miliolite
Formation of Marsa Alam area, Western India- Journal Geological Society of India . 97: 1355-1364.
Singh, S. K., Kishore, S., Jauhri, A. K., Mi sra, P. K. 2011. Coralline algae from the Bermoti Member
(Upper Oligocene) of the Maniyara Fort Formation of Marsa Alam area, Gujarat, India Revue de
Paleobiologie, 30(1):177-190.
Philobbos, E. R.; El-Haddad, A. A., Mahran, T. M., 1989. Sedimentology of syn-rift Upper Miocene
(?)-Pliocene sediments of the Red Sea area: A model from the environs of Marsa Alam, Egypt.-
270 Hamad
Egypt. J. Geol., 33 (1-2): 201-227.
Rasser, M. W., Nebelsick, J. H. 2003. Provenance analysis of Oligocene autochthonous and
allochthonous coralline algae: a quantitative approach towards reconstructing transported
assemblages. Palaeogeography, Palaeoclimatology, Palaeoecology, 201(1-2): 89-111 .
Said, R., 1990. Cenozoic. In: Said, R. (Ed.), The Geology of Egypt. A. A. Balkema,
Souaya, F. J. 1963. Micropaleontology of four sections south of Qusier, Egypt, Micropaleontology, 9
(3): 233- 266 .
Souaya, F. J. 1963a. Micropaleontology of four sections south of Qusier, Egypt, Micropaleontology, 9
(3): 233 - 266 .
Souaya, F. J. 1963b. On the calcareous algae (Melobesoideae) of Gebel Genefe (Cairo - Suez Road)
with local zonation and some possible correlations. Journal of Paleontology, 37 (6): 1204 - 1216 .
Strasser, A. and Strohmenger, Ch. (1997): Early diagenesis in Pleistocene coral reefs, southern Sinai,
Egypt: response to tectonics, sea-level and climate.- Sedimenyology 44: 537-558 .
Vannucci, G., Basso, D. and Fravega, P. 2000. New observation on the anatomy of the calcareous alga
Subterraniphyllum Elliott. Rivista Italiana di Paleontologia e Stratigrafia, 106 (2): 237-246.
Wanjarwadkar, K.M. 2000. Fossil calcareous algae and ichnofossils from Paleocene-Eocene
sediments of Middle Andaman Island, Andaman. Unpublished Ph.D. Thesis, Dr. Babasaheb
Ambedkar
Woelkerling, W. J. 1988. The Coralline red alage: an analysis of the genera and subfamilies of the
nongeniculate Corallinaceae.- Oxford University Press, 268pp .
Woelkerling, W. J., Irvine, L. M., Harvey, A. S., 1993. Growth forms in non - geniculate coralline red
algae (Corallinales, Rhodophyta). Austeralian Systematical Botany, 6: 277 - 293 .
Wray, J.L. 1977. Calcareous Algae, Developments in Paleontology and Stratigraphy. Elsevier
Scientific Publishing Corporation 4 .