Carbonates and Evaporites

, Volume 15, Issue 2, pp 130–137 | Cite as

Mode of formation and sedimentary association of the reefal sediments, Ras Abu El Darag, Gulf of Suez, Egypt

  • Amr A. El-SammakEmail author
  • Mahmoud Kh. El-Sayed
  • Mohammed A. El-Sabrouti


The present study aims to examine the mode of formation and sedimentary association of the reefal sediments, Ras Abu el-Darag, northern Gulf of Suez. Samples were collected from different zones along a traverse section perpendicular to the coastline. Geochemical, mineralogical and petrographical studies were performed. In addition the chemistry, mineralogy, oxygen and carbon isotope analyses were been done on separate ooids from selected samples. Ras Abu el-Darag sediments consist mainly of nonskeletal components mixed with skeletal components. Low diversity of skeletal components was observed. Aragonite is the major carbonate mineral, followed by calcite (4–8 mol% MgCO3) then Mg-calcite (> 8 mol% MgCO3) and dolomite. Dolomite, found in Ras Abu el-Darag sediments, seems to be partially syngenetic in origin due to microbial activity and partially allochthonous derived from adjacent coastal areas. Ooids are the major sedimentary constituents. These ooids are polymineralic and consist of three minerals, aragonite which comprises about 73.3% followed by calcite and Mg-calcite. Data of δO18 and δC13 on some selected ooids fall within the field of shallow marine carbonates. δO18 ranges from 2.834%. to 3.635%.. On the other hand δC13 is ranging between −0.014%. and 0.695%.. On the basis of the size of nucleus, the thickness of laminae, the type of the nucleus, as well as the situation in Ras Abu el-Darag sediments where those ooids were not associated with mud, the ooids found in Ras Abu el-Darag sediments are considered to be autochthonous ooids having intrabasinal origin.


Dolomite Aragonite Ooids Peloids Oolite 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. ALSHARAHAN, A.S. and SALAH, M., 1994, Geology and hydrocarbon habitat in a rift setting: Southern Gulf of Suez, Egypt:Bulletin of Canadian Petroleum Geology, v. 42, p. 312–331.Google Scholar
  2. CAROZZI, A.V., 1960, Microscopic sedimentary petrography. New York-London, Wiley, 485 p.Google Scholar
  3. EL-SAMMAK, A.A. and SHAABAN, M.N., 1996, Carbonate geochemistry and mineralogy of short cores, Gulf of Suez, Egypt:Carbonates and Evaporites, v. 11, p. 156–161.CrossRefGoogle Scholar
  4. EL-SAMMAK, A.A., EL-SAYED, M.Kh. and EL-SABROUTI, M.A., 1997, Analysis of reef sedimentation in Hurghada (Egypt), Northern Red Sea:Carbonates and Evaporites, v. 12, p. 254–263.CrossRefGoogle Scholar
  5. FRIEDMAN, G.M., 1968, Geology and geochemistry of reefs, carbonate sediments, and waters, Gulf of Aqaba, Red Sea:Journal of Sedimentary Petrology, v. 38, p. 895–919.CrossRefGoogle Scholar
  6. FRIEDMAN, G.M., SNEH, A., and OWEN, R.W., 1985. The Ras Muhammad pool: Implications for the Gavish Sabkha.In Friedman, G.M. and Krumbein, W.E., eds., Ecological Studies, v. 53, Hypersaline Ecosystem, p. 218–237.Google Scholar
  7. FLÜGEL, E., 1982, Microfacies analysis of limestone. Springer-Verlag. Berlin-Heidelberg-New York, 633 p.CrossRefGoogle Scholar
  8. GARBER, R.A., FRIEDMAN, G.M. and D NISSENBAUM, A., 1981, Concentric aragonite ooids from the Dead Sea:Journal of Sedimentary Petrology, v. 51, p. 455–458.Google Scholar
  9. GIVEN, R.K. and WILKINSON, B.H., 1985, Kinetic control of morphology, composition, and mineralogy of abiotic sedimentary carbonates:Journal of Sedimentary Petrology, v. 55, p. 109–119.Google Scholar
  10. LAND, L.S., BEHRENS, E.W., and FISHMAN, S.A., 1979, The ooids of Baffin Bay, Texas:Journal of Sedimentary Petrology, v. 49, p. 1269–1275.Google Scholar
  11. LUZ, B., HELLER-KALLAI, L., and ALMOGI-LABIN, A., 1984, Carbonate mineralogy of late Pleistocene sediments from the Northern Red Sea:Israel Journal of Earth Sciences, v. 33, p. 157–166.Google Scholar
  12. MILLIMAN, J.D., 1974, Marine carbonates. Springer-Verlag, 375 p.Google Scholar
  13. MILLIMAN, J.D. and BORNHOLD, B.D., 1973, Peak height versus peak intensity analysis of X-ray diffraction data:Sedimentology, v. 20, p. 445–448.CrossRefGoogle Scholar
  14. MILLIMAN, J.D., FREILE, D., STEINEN, R.P., and WIBLER, J.R., 1993, Great Bahama Bank aragonite muds: mostly inorganically precipitated, mostly exported:Journal of Sedimentary Petrology, v. 63, p. 589–595.Google Scholar
  15. NESTEROFF, W.D., 1955, Les récifs coralliens du Banc Farsan Nord (Mer Rouge). Resultats scientifiques des campagnes de la calypso, I Campagne en Mer Rouge. Masson et Cie, Paris.Google Scholar
  16. SNEH, A. and FRIEDMAN, G.M., 1985, Hypersaline sea-marginal flats of the Gulf of Aqaba and Suez.In Friedman, G.M. and Krumbein, W.E., eds., Hypersaline Ecosystems. Ecological Studies. v. 53, Springer-Verlag, New York, Tokyo, p. 103–135.CrossRefGoogle Scholar
  17. SASS, Y., WEILER, Y., and KATZ, A., 1972, Recent sedimentation and oolite formation in the Ras Matarma lagoon, Gulf of Suez.In Stanley, D., ed., The Mediterranean Sea. Dowden, Hutchinson and Ross, Inc., p. 279–292.Google Scholar
  18. RUSNAK, G.A., 1960, Some observations of recent oolites:Journal of Sedimentary Petrology, v. 30, p. 471–480.Google Scholar
  19. UNDP/IUCN, 1988, Coral reefs of the World, v. 2: Indian Ocean, Red Sea and Gulf, UNDP Regional Seas Directories and Bibliographies, IUCN, Switzerland and Cambridge, U.K./ UNDP, Nairobi, Kenya, p. 57–73.Google Scholar
  20. ZAGHLOUL, S.M., SAMUEL, M.D., YANII, N.N., and GUIRGUES, N.R., 1984a, Lithostratigraphic and sedimentologic studies on lower Cretaceous clastic near Abu Darag, Gulf of Suez:Egyptian Journal of Geology, v. 28, p. 185–207.Google Scholar
  21. ZAGHLOUL, S.M., SAMUEL, M.D., YANII, N.N., and GUIRGUES, N.R., 1984b, Petrology and mineralogy of lower Cretaceous clastic near Abu Darag, Gulf of Suez:Egyptian Journal of Geology, v. 28, p. 209–220.Google Scholar

Copyright information

© Springer 2000

Authors and Affiliations

  • Amr A. El-Sammak
    • 1
    Email author
  • Mahmoud Kh. El-Sayed
    • 1
  • Mohammed A. El-Sabrouti
    • 1
  1. 1.Department of Oceanography, Faculty of ScienceUniversity of AlexandriaEgypt

Personalised recommendations