Abstract
The Brown Limestone of Egypt is a primary source of hydrocarbons in the Gulf of Suez. It was deposited during the Late Cretaceous prior to Miocene rifting and development of the Gulf of Suez. Organic-rich, age-equivalent units to the Brown Limestone can be found across much of the northeastern margin of ancient Gondwana, and occur presently from Libya to Syria. The Brown Limestone was deposited during the initial marine transgression across the stable platform. Near-shore deposits of the Brown Limestone contain abundant phosphorites and glauconites, in addition to the organic-rich shales and marls. Offshore facies, such as found in the Gulf of Suez, while also organic-rich, do not contain concentrated phosphorite or glauconitic horizons.
The association of phosphorites, glauconites, and abundant organic matter indicates a zone of high primary productivity, which along with the development of low oxygen levels, led to preservation of organic-rich, oil-prone shales and marls. Organic enrichment, hydrocarbon generation potential, and the type of organic matter varies in response to the depositional setting. The most hydrogen-enriched facies occur in the Gulf of Suez, while landward facies, in Cretaceous time, vary from strongly oil-prone to nonsource.
Based on molecular and isotopic geochemical data, all of the oils from the Gulf of Suez appear to have been generated from common or very similar sources. After accounting for differences in maturity, extracts from the Brown Limestone appear to be very similar to the examined oils. However, several potential sources have been identified in the Gulf of Suez and the oils cannot be unambiguously correlated back to the Brown Limestone. These sources range in age from Late Cretaceous to Miocene and contribution from the Eocene limestones is probable.
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References
Abed AM, Al-Agha MR (1989) Petrography, geochemistry and origin of NW Jordan phosphorites. Jour Geol Soc Lond 146: 499–506
Bartov Y, Steinitz G (1977) The Judea and Mount Scopus Groups in the Negev and Sinai with trend surface analysis of the thickness data. Isr J Earth Sc 26: 119–148
Baturin GN (1982) Phosphorites on the sea floor; origin, composition and distribution. Elsevier, Amsterdam, 345 pp
Bein A, Amit O (1982) Depositional environments of the Senonian chert, phosphorite and oil shale sequence in Israel as deduced from their organic matter composition. Sedimentology 29: 81–90
Bock WD (1987) Geochemie und Genese der oberkretazischen Phosphorite Ägyptens. Berl Geowiss Abh Reihe A 35: 82–94
Chowdhary LR, Taha S (1987) Geology and habitat of oil in Ras Budran field, Gulf of Suez, Egypt. Am Assoc Petrol Geol Bull 71: 1274–1293
Cooles GP, Mackenzie AS, Quigley TM (1986) Calculation of petroleum masses generated and expelled from source rocks. Org Geochem 10: 235–245
Didyk BM, Simoneit BRT, Brassell SC, Eglinton G (1978) Organic geochemical indicators of paleoenvironmental conditions of sedimentation. Nature 272: 216–222
El-Kammar, AM, Darwish, AM, Philip G and El-Kammar, M.M. (1990). Composition and origin of black shales from Quseir area, Red Sea, Egypt. Journal of the Univ Kuwait 17: 177–189
Elzarka MH, Mostafa AR (1988) Oil prospects of the Gulf of Suez, Egypt a case study. Org Geochem 12: 109–121
Ganz H (1984) Organic-geochemical and palynological studies of a Dakhla shale profile in southeast Egypt. Berl Geowiss Abh Reihe A 50: 363–374
Ganz HH, Luger P, Schrank E, Brooks PW, Fowler MG (1990) Facies evolution of Late Cretaceous black shales from southeast Egypt. In: Huc AY (ed) Deposition of organic facies. Am Assoc Pet Geol, Tulsa, Stud Geol 30: 217–229
Garrison RE, Glenn CR, Snavely PD, Mansour SEA (1979) Sedimentology and origin of Upper Cretaceous phosphorite deposits at Abu Tartur, Western Desert, Egypt. Ann Geol Surv Egypt 9: 261–281
Germann K, Bock WD, Schroter T (1985) Properties and origin of Upper Cretaceous Campanian phosphorites in Egypt. Sci Geol Mem 77: 23–33
Germann K, Bock WD, Ganz H, Schroter T, Troger U (1987) Depositional conditions of Late Cretaceous phosphorites and black-shales in Egypt. Berl Geowiss Abh Reihe A 15: 629–668
Glenn CR (1980) Stratigraphy, petrology and sedimentology of the Duwi formation (Late Cretaceous) eastern Egypt. MS Thesis, Univ California, Santa Cruz, 269 pp
Glenn CR (1990) Depositional sequences of the Duwi, Sibaiya and Phosphate Formations, Egypt: phosphogenesis and glauconitization in a Late Cretaceous epeiric sea. In: Notholt AJG, Jarvis I (eds) Phosphorite research and development. Geol Soc, London, Spec Publ 52: 205–222
Glenn CR, Arthur MA (1990) Anatomy and origin of a Cretaceous phosphorite-greensand giant, Egypt. Sedimentology 37: 123–154
Glenn CR, Mansour SEA (1979) Reconstruction of the depositional and diagenetic history of phosphorites and associated rock of the Duwi Formation (Late Cretaceous) Eastern Desert, Egypt. Ann Geol Surv Egypt 9: 388–407
Gregor HJ, Hahn H (1982) Fossil fructifications from the Cretaceous-Palaeocene boundary of the SW-Egypt (Danian, Bir Abu Mangar). Tertiary Res 4: 121–147
Hendriks F, Luger P (1987) The Rakhiya Formation of the Gebel Qreiya area: evidence of Middle Campanian to Early Maastrichtian synsedimentary tectonism. Berl Geowiss Abh Reihe A 75: 83–96
Issawi B (1987) A review of Egyptian Late Cretaceous phosphate deposits. In: Notholt AJG, Sheldon RP, Davidson DF (eds) Phosphate deposits of the world. Cambridge Univ Press, Cambridge, 2: 187–193
Kemper E, Zimmerle W (1983) Facies patterns of a Cretaceous/Tertiary subtropical upwelling system (Great Syrian desert) and an Aptian/Albian boreal upwelling system (NW Germany), In: Thiede J, Suess E (eds) Coastal upwelling — its sediment record, Part B. Sedimentary records of ancient coastal upwelling. Plenum Press, New York, pp 501–533
Kholief MM, Barakat MA (1986) New evidence for a petroleum source rock in a Miocene evaporite sequence, Gulf of Suez, Egypt. J Petrol Geol 9: 217–226
Klemme HD, Ulmishek GF (1991) Effective petroleum source rocks of the world: Stratigraphic distribution and controlling depositional factors. Am Assoc Petrol Geol Bull 75: 1809–1851
Klitzsch EH, Squyres CH (1990) Paleozoic and Mesozoic geological history of northeastern Africa based upon new interpretation of Nubian strata. Am Assoc Petrol Geol Bull 74: 1203–1211
Kolodny Y (1980) Carbon isotopes and depositional environment of a high productivity sedimentary sequence — the case of the Mishash-Ghareb Formations, Israel. Isr J Earth Sci 29: 147–156
Lee C (1992) Controls on organic carbon preservation: the use of stratified water bodies to compare intrinsic rates of decomposition in oxic and anoxic systems. Geochim Cosmochim Acta 56: 3323–3335
Lewan MD (1980) Geochemistry of vanadium and nickel in organic matter of sedimentary rocks. PhD Thesis, Univ Cincinnati, 353pp
Lewy Z (1990) Transgressions, regressions and relative sea level changes on the Cretaceous shelf of Israel and adjacent countries. A critical evaluation of Cretaceous global sea level correlations. Paleoceanography 5: 619–637
Luger P, Schrank E (1987) Mesozoic to Paleogene transgressions in middle and southern Egypt-summary of paleontological evidence. Curr Res Afr Earth Sci, Balkema, Rotterdam, vol. 14: pp 199–202
Mikbel S, Abed AM (1985) Discovery of large phosphate deposits in NW Jordan. Dirasat 12: 125–136
Moldowan JM, Seifert WK, Gallegos EJ (1985) Relationship between petroleum composition and depositional environment of petroleum source rocks. Am Assoc Petrol Geol Bull 69: 1255–1268
Mostafa A, Ganz H, Matheis G (1993) Origin of petroleum in the Gulf of Suez basin, Egypt. In: Øygard K (co-ordinating ed) Poster sessions from the 16th Int Meet Org Geochem. Stavan-ger 1993, Falch Hurtigtrykk, Oslo, Norway, pp 30–34
Nagati M (1992) Red Sea oil shows attract attention to Miocene salt, post-salt sequence. Oil Gas J 90 (Dec 7): 46
Nagati M (1992) Red Sea oil shows attract attention to Miocene salt, post-salt sequence. Oil Gas J 90 (Dec 7): 48–50
Nagati M (1992) Red Sea oil shows attract attention to Miocene salt, post-salt sequence. Oil Gas J 90 (Dec 7): 52–53
Notholt AJG (1985) Phosphorite resources in the Mediterranean (Tethyan) phosphogenic province: a progress report. Sci Geol Mem 77: 9–21
Palacas JG (1984) Petroleum geochemistry and source rock potential of carbonate rocks. Am Assoc Petrol Geol, Tulsa, Stud Geol 18: 208
Peters KE, Moldowan JM (1991) Effects of source, thermal maturity, and biodegradation on the distribution and isomerization of homohopanes in petroleum. Org Geochem 17: 47–61
Peters KE, Moldowan JM (1993) The biomarker guide-interpreting molecular fossils in petroleum and ancient sediments. Prentice Hall, Englewood Cliffs, NY, 585pp
Philp RP, Fan P, Lewis CA, Li J, Zhu H, Wang H (1991) Geochemical characteristics of oils from the Chaidamu, Shanganning and Jianghan basins, China. J Southeast Asian Earth Sci 5: 351–358
Richardson M (1982) A depositional model for the Cretaceous Duwi (phosphate) Formation, south of Quseir, Red Sea coast, Egypt. MS Thesis, Univ South Carolina, 395 pp
Richardson M, Arthur MA, Katz BJ (1986) Miocene syn-rift evaporites of the Red Sea; Their deposition and hydrocarbon source potential. Am Assoc Petrol Geol Bull 70: 638–639
Robison VD (1986) Organic geochemical characterization of the Late Cretaceous-Early Tertiary transgressive sequence found in the Duwi and Dakhla Formations, Egypt. PhD Thesis, Univ Oklahoma, 176 pp
Robinson VD, Engel MH (1993) Characterization of the source horizons within the Late Cretaceous transgressive sequence of Egypt. In: Katz BJ, Praft LM (eds) Source rocks in a sequence stratigraphic framework. Am Assoc Pet Geol, Tulsa, Stud Geol 37: 101–117
Rohrback BG (1983) Crude oil geochemistry of the Gulf of Suez. In: Bjoroy M (ed) Advances in organic geochemistry, 1981. Wiley, New York, pp 39–48
Rullkötter J, Spiro B, Nissenbaum A (1985) Biological marker characteristics of oils and asphalts from carbonate source rocks in a rapidly subsiding graben, Dead Sea, Israel. Geochim Cosmochim Acta 49: 1357–1370
Said R (1990a) Part 3: Geology of selected areas; Red Sea coastal plain. In: Said R (ed) The geology of Egypt. Balkema, Rotterdam, 734 pp
Said R (1990b) Part 4: Discussion; Cenozoic. In: Said R. (ed) The geology of Egypt. Balkema, Rotterdam, 734 pp
Schlanger SO, Jenkyns HC (1976) Cretaceous oceanic anoxic events-causes and consequences. Geol Mijnbouw 55: 179–184
Schrank E (1984a) Organic-walled microfossils and sedimentary facies in the Abu Tartur phosphates (Late Cretaceous, Egypt). Berl Geowiss Abh Reihe A 50: 177–187
Schrank E (1984b) Organic-geochemical and palynological studies of a Dakhla Shale profile (Late Cretaceous) in southeast Egypt: Part A: succession of microfloras and depositional environment. Berl Geowiss Abh Reihe A 50: 189–207
Schroter T (1986) Die lithofazille Entwicklung der oberkretazis-chen Phosphatgesteine Ägyptens — ein Beitrag zur Genese der Tethys-Phosphorite der Ostsahara. Berl Geowiss Abh Reihe A 67: 105
Shahin AN (1988) Oil window in the Gulf of Suez basin, Egypt. Am Assoc Petrol Geol Bull 72: 1024–1025
Sofer Z (1984) Stable carbon isotope compositions of crude oils: Applications to source depositional environments and petroleum alteration. Am Assoc Petrol Geol Bull 68: 31–49
Soliman MA, Habib ME, Ahmed EA (1986) Sedimentologic and tectonic evolution of the Upper Cretaceous-Lower Tertiary succession at Wadi Qena, Egypt. Sediment Geol 46: 111–133
Soliman HA, Ahmed EA, Aref MAM, Rushdy M (1989) Contribution to the stratigraphy and sedimentology of the Upper Cretaceous-Lower Eocene sequences east of Esna, Nile Valley, Egypt. Bull Fac Sci Assiut Univ 18: 41–67
Soudry D, Nathan Y, Roded R (1985) The Ashosh-Haroz facies and their significance for the Mishash palaeogeography and phosphorite accumulation in the northern and central Negev, southern Israel. Isr J Earth Sci 34: 211–220
Spiro B, Weite DH, Rullkötter J, Schaefer RG (1983) Asphalts, oils, and bituminous rocks from the Dead Sea area — a geochemical correlation study. Am Assoc Petrol Geol Bull 67: 1163–1175
Tannenbaum E, Aizenshtat Z (1984) Formation of immature asphalt from organic-rich carbonate rock — II. Correlations of maturation indicators. Org Geochem 6: 503–511
Tannenbaum E, Aizenshtat Z (1985) Formation of immature asphalt from organic-rich rocks — I. Geochemical correlation. Org Geochem 8: 181–192
Tissot BP, Weite DH (1984) Petroleum formation and occurrence. Springer, Berlin Heidelberg New York, 699pp
Ungerer P, Chenet Y, Moretti I, Chiarelli A, Oudin JL (1986) Modelling oil formation and migration in the southern part of the Suez rift, Egypt. Org Geochem 10: 247–260
University of Chicago (1990) Paleogeographic atlas project, Ziegler AM
Waples DW (1982) Phosphate-rich sedimentary rocks: significance for organic facies and petroleum exploration. J Geochem Explor 16: 135–160
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Robison, V.D. (1995). Source Rock Characterization of the Late Cretaceous Brown Limestone of Egypt. In: Katz, B.J. (eds) Petroleum Source Rocks. Casebooks in Earth Sciences. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-78911-3_14
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DOI: https://doi.org/10.1007/978-3-642-78911-3_14
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